CClinicalTrials.gg
TerminatedNCT06171724Updated Apr 9, 2026Results posted

Ashwagandha Pharmacokinetics Study in Older Adults

An Early Phase 1 interventional study of Shoden in Healthy and Aging, sponsored by Oregon Health and Science University. Terminated at 1 site in United States. Open to participants aged 65 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-04-09.

Sponsored by Oregon Health and Science University · Early Phase 1, Interventional, and Basic science

Why this study was terminated
Amended study protocol was not reapproved in time for completion of study activities.
Phase
Early Phase 1
Study type
Interventional
Enrollment
11
Allocation
Randomized
Ages
65 Years and older
Sex
All
01

Study summary

This study will measure the oral bioavailability and pharmacokinetics of known compounds from a standardized Withania somnifera botanical dietary supplement in healthy older adults.

Read the detailed description

This is a randomized, double-blind, crossover trial evaluating (a) the pharmacokinetics of withanolides from two doses (240 and 480 mg) of a commercially available Withania somnifera root and leaf extract (Shoden®), (b) the safety and tolerability of these doses over four weeks' use and (c) the feasibility of remotely measuring sleep- and stress-related outcomes in older adults. Participants will be randomized to one of two dose sequence groups. There will be two four-week study periods separated by a two-week washout period. During each study period, participants will attend a 13-hour pharmacokinetics study visit and return for 24- and 48-hour blood and urine collections. After the 48-hour visit, they will continue taking Shoden® at the administered dose (240 or 480 mg) for four weeks, at which time they will return for a follow-up visit.

02

Conditions studied

  • Healthy
  • Aging

Keywords

  • Withania
  • Herbal Medicine
  • Dietary Supplements
03

In context

Lead sponsor

Oregon Health and Science University is the lead sponsor of 676 studies on the registry; 136 are open to participants now.

Of its 49 completed or terminated interventional studies of FDA-regulated products, 36 (73%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
65 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  1. Age 65 and older, male and female
  2. Body Mass Index (BMI) greater than 17 and less than 35 at screening
  3. Sufficient vision and hearing to complete all tests
  4. Willingness to discontinue all botanical supplementation for one week prior to and throughout study
  5. No known sensitivity to Withania somnifera or any of its derivatives
  6. Normal or clinically not significant 12-lead electrocardiogram (ECG) recording
  7. Hepatic (ALT, AST, bilirubin), renal (creatinine, estimated GFR), and TSH parameters within normal range
  8. Hemoglobin ≥13.0 g/dL or hematocrit ≥39% (males) OR hemoglobin ≥12.5 g/dL or hematocrit ≥38% (females), per FDA recommendations on blood donation
  9. General health status that will not interfere with the ability to complete the study
  10. Willingness to attend all study visits
  11. Willingness to avoid caffeine and xanthine-containing foods or beverages (e.g., coffee, tea, chocolate, caffeine-containing sodas, colas, etc.), as well as grapefruit juice and poppy-containing foods for 48 hours prior to baseline visits
  12. Willingness to adhere to special diet (no dairy, grapefruit products, poppy-containing foods, high-fat meals, caffeine, or xanthine-containing foods or beverages) during baseline visits and until after 24-hour visit
  13. Mini-Mental State Exam (MMSE) score ≥26

Exclusion criteria

Exclusion Criteria:

  1. Current smoking, alcohol, or substance abuse according to DSM-V criteria
  2. Participants who are currently pregnant, actively trying to conceive a child, or planning to within three months of study completion
  3. Severe aversion to venipuncture
  4. Donation of blood within 90 days of screening
  5. Participation in drug research study within 90 days of screening
  6. Serious health condition (i.e., illness, injury, impairment, or physical or mental condition which requires a) overnight hospitalization or b) continuing treatment that may cause episodic periods of incapacity of more than 3 consecutive days) within 30 days of screening
  7. Allergy to nightshade plants (Solanaceae family)
  8. Abnormal labs indicating symptomatic and untreated urinary tract infection
  9. History of prostate cancer
  10. History of kidney transplant
  11. Cancer within the last five years, with the exception of non-metastatic skin cancers
  12. Comorbid conditions requiring medication such as diabetes, kidney failure, liver failure, hepatitis, blood disorders, hypotension, thyroid disease, respiratory disorders, or cardiovascular disease
  13. Presence of sleep apnea, moderate to severe restless leg syndrome, major circadian rhythm changes, or narcolepsy
  14. Significant disease of the Central Nervous System (CNS) such as brain tumor, seizure disorder, subdural hematoma, cranial arteritis, or clinically significant stroke
  15. Diagnosis of major depression, schizophrenia, bipolar disorder, or other major psychiatric disorder as defined by DSM-V criteria
  16. Diseases associated with dementia such as Alzheimer's disease, vascular dementia, normal pressure hydrocephalus or Parkinson's disease
05

Study design

Phase
Early Phase 1
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
11 participants (actual)

Study arms

  • Experimental
    Shoden 240 mg

    Participants will receive a single dose of 240 mg Shoden, administered as two 120 mg capsules, at pharmacokinetics visit 1 or 2 depending on their sequence group. Forty-eight hours later, participants will receive a 35-day supply of Shoden at a dose of 240 mg per day.

    Dietary Supplement: Shoden

  • Active comparator
    Shoden 480 mg

    Participants will receive a single dose of 480 mg Shoden, administered as two 240 mg capsules, at pharmacokinetics visit 1 or 2 depending on their sequence group. Forty-eight hours later, participants will receive a 35-day supply of Shoden at a dose of 480 mg per day.

    Dietary Supplement: Shoden

Interventions

  • Dietary supplementShoden

    Shoden® powder is a commercial, dried 70% ethanolic extract of Withania somnifera (ashwagandha, WS) root and leaf, standardized to 35% withanolide glycosides. Shoden® powder is manufactured by Arjuna Natural Pvt Ltd, based in Kochi, Kerala, India.

06

What researchers measure

Primary outcomes

  1. Maximum Plasma Concentration (Cmax) of Withanolides After Shoden Administration

    After oral administration of Shoden (240 or 480 mg), plasma concentrations of withanolides will be measured in plasma samples obtained over a 48-hour period, using liquid chromatography coupled to multiple reaction monitoring mass spectrometry (LC-MRM-MS) to determine pharmacokinetic parameters.

    Time frame: For each study period, a 48-hour post-administration period (15 minutes, 30 minutes, 45 minutes, 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 3.5 hours, 4 hours, 5 hours, 6 hours, 9 hours, 12 hours, 24 hours, and 48 hours)

Secondary outcomes

  1. Time of Maximum Concentration of Withanolides After Shoden Administration

    The time of maximum (tmax) of withanolides over the first 48 hours post-Shoden administration will be calculated using liquid chromatography coupled to multiple reaction monitoring mass spectrometry (LC-MRM-MS).

    Time frame: For each study period, a 48-hour post-administration period (15 minutes, 30 minutes, 45 minutes, 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 3.5 hours, 4 hours, 5 hours, 6 hours, 9 hours, 12 hours, 24 hours, and 48 hours)

  2. Half-life of Withanolides After Shoden Administration

    The half-life (t1/2) of withanolides will be calculated using liquid chromatography coupled to multiple reaction monitoring mass spectrometry (LC-MRM-MS).

    Time frame: For each study period, a 48-hour post-administration period (15 minutes, 30 minutes, 45 minutes, 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 3.5 hours, 4 hours, 5 hours, 6 hours, 9 hours, 12 hours, 24 hours, and 48 hours)

  3. Steady-state Concentration of Selected Withanolides in Plasma

    Concentration (ng/ml) of selected withanolides in plasma after four weeks' use

    Time frame: For each study period, steady state concentration will be collected during week 4 following four weeks' daily use of Shoden.

  4. Urine Concentration of Withanolides After Shoden Administration

    The concentration (ng/ml) of withanolides in urine will be measured in a pooled urine sample over 12 hours post-Shoden administration.

    Time frame: For each study period, urine collected over the first 12 hours post-Shoden administration.

  5. Number of Participants With Abnormal ECG Readings (7 Hours)

    Resting electrocardiography will be measured using a ten-lead electrocardiogram at the zero-minutes timepoint and 7 hours post-Shoden administration. Electrocardiogram changes will be assessed and alternative clinical explanations considered, in order to determine if any changes are attributable to the study intervention. The number of participants with abnormal ECG readings at 7 hours compared to baseline will be reported.

    Time frame: For each study period, electrocardiography will be assessed at 0 and 7 hours post-Shoden administration. For pharmacokinetics visits that were halted early, ECG was collected at 24 hours.

  6. Number of Participants With Abnormal ECG Readings (4 Weeks)

    Resting electrocardiography will be measured using a ten-lead electrocardiogram at the zero-minutes timepoint and 4-weeks post-Shoden administration. Electrocardiogram changes will be assessed and alternative clinical explanations considered, in order to determine if any changes are attributable to the study intervention. The number of participants with abnormal ECG readings at 4 weeks compared to baseline will be reported.

    Time frame: For each study period, electrocardiography will be assessed at 0 and 4 weeks post-Shoden administration.

  7. Mean Change in ALT (10 Hours)

    A comprehensive metabolic panel will measure alanine aminotransferase and in units per liter as a marker of liver function. Enzyme levels falling outside the normal range will be compared to baseline levels, and alternative clinical explanations considered, in order to determine if elevations are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

    Time frame: For each study period, liver function will be assessed at 0 and 10 hours post-Shoden administration. For pharmacokinetics visits that were halted early, safety labs were collected at 24 hours.

  8. Mean Change in ALT (4 Weeks)

    A comprehensive metabolic panel will measure alanine aminotransferase and in units per liter as a marker of liver function. Enzyme levels falling outside the normal range will be compared to baseline levels, and alternative clinical explanations considered, in order to determine if elevations are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

    Time frame: For each study period, liver function will be assessed at 0 and 4 weeks post-Shoden administration.

  9. Mean Change in AST (10 Hours)

    A comprehensive metabolic panel will measure aspartate aminotransferase and in units per liter as a marker of liver function. Enzyme levels falling outside the normal range will be compared to baseline levels, and alternative clinical explanations considered, in order to determine if elevations are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

    Time frame: For each study period, liver function will be assessed at 0 and 10 hours post-Shoden administration. For pharmacokinetics visits that were halted early, safety labs were collected at 24 hours.

  10. Mean Change in AST (4 Weeks)

    A comprehensive metabolic panel will measure aspartate aminotransferase and in units per liter as a marker of liver function. Enzyme levels falling outside the normal range will be compared to baseline levels, and alternative clinical explanations considered, in order to determine if elevations are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

    Time frame: For each study period, liver function will be assessed at 0 and 4 weeks post-Shoden administration.

  11. Mean Change in Creatinine (10 Hours)

    A comprehensive metabolic panel will measure creatinine as a marker of kidney function. Each parameter falling outside the normal range (0.5 to 1.2 milligrams per deciliter) will be compared to baseline values. If elevations are observed, alternative clinical explanations will be considered to determine if elevations are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to 10-hours post-Shoden administration for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

    Time frame: For each study period, liver function will be assessed at 0 and 10 hours post-Shoden administration. For pharmacokinetics visits that were halted early, safety labs were collected at 24 hours.

  12. Mean Change in Creatinine (4 Weeks)

    A comprehensive metabolic panel will measure creatinine as a marker of kidney function. Each parameter falling outside the normal range (0.5 to 1.2 milligrams per deciliter) will be compared to baseline values. If elevations are observed, alternative clinical explanations will be considered to determine if elevations are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

    Time frame: For each study period, liver function will be assessed at 0 and 4 weeks post-Shoden administration.

  13. Mean Change in Thyroid-stimulating Hormone (4 Weeks)

    Thyroid-stimulating hormone will be measured in units of milli-international units per liter as a marker of thyroid function. Any changes in hormone levels will be compared to baseline levels. Alternative clinical explanations will be considered in order to determine if any changes in hormone levels are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

    Time frame: For each study period, thyroid-stimulating hormone will be assessed at 0 minutes post-Shoden administration and four weeks post-Shoden administration.

  14. Mean Change in Testosterone (4 Weeks)

    Testosterone will be measured in units of nanograms per deciliter. Any changes in hormone levels will be compared to baseline levels. Alternative clinical explanations will be considered in order to determine if any changes in testosterone levels are attributable to the study intervention. Changes in testosterone will be analyzed by sex, by dose.

    Time frame: For each study period, testosterone will be assessed at 0 minutes post-Shoden administration and four weeks post-Shoden administration.

  15. Mean White Blood Cell Count (4 Weeks)

    White blood cells will be measured in units of cells per cubic millimeter. Any changes in red blood cell levels will be compared to baseline levels. Alternative clinical explanations will be considered in order to determine if any changes in red blood cells are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

    Time frame: For each study period, white blood cells will be assessed at 0 minutes post-Shoden administration and four weeks post-Shoden administration.

  16. Mean Change in Red Blood Cell Count (4 Weeks)

    Red blood cells will be measured in units of cells per cubic millimeter. Any changes in red blood cell levels will be compared to baseline levels. Alternative clinical explanations will be considered in order to determine if any changes in red blood cells are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

    Time frame: For each study period, red blood cells will be assessed at 0 minutes post-Shoden administration and four weeks post-Shoden administration.

  17. Mean Change in Hemoglobin (4 Weeks)

    Hemoglobin will be measured in grams per deciliter. Any changes in hemoglobin will be compared to baseline levels. Alternative clinical explanations will be considered in order to determine if any changes in hemoglobin are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

    Time frame: For each study period, hemoglobin will be assessed at 0 minutes post-Shoden administration and four weeks post-Shoden administration.

  18. Mean Change in Hematocrit (4 Weeks)

    Hematocrit will be measured in percent. Any changes in hematocrit will be compared to baseline levels. Alternative clinical explanations will be considered in order to determine if any changes in hematocrit are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

    Time frame: For each study period, hematocrit will be assessed at 0 minutes post-Shoden administration and four weeks post-Shoden administration.

  19. Percentage of REDCap Surveys Completed

    The feasibility of administering REDCap surveys will be assessed by calculating the percentage of administered questionnaires that are returned and fully completed by participants, with feasibility defined as at least 80% of all administered questionnaires returned and completed.

    Time frame: For each study period, prior to the pharmacokinetics visit and prior to the four-week follow-up visit

07

Results

Posted Apr 9, 2026

Participant flow

Participants were recruited from April 2024 until September 2024.

Participant flow — Overall Study
MilestoneShoden 240 mg First, Then Shoden 480 mgShoden 480 mg First, Then Shoden 240 mg
Started34
Completed11
Not completed23
Withdrew: Adverse event11
Withdrew: Mild anemia noted on baseline labs at pharmacokinetics visit 1.11
Withdrew: Mild anemia noted on baseline labs at pharmacokinetics visit 201

Outcome measures

PrimaryMaximum Plasma Concentration (Cmax) of Withanolides After Shoden Administration

After oral administration of Shoden (240 or 480 mg), plasma concentrations of withanolides will be measured in plasma samples obtained over a 48-hour period, using liquid chromatography coupled to multiple reaction monitoring mass spectrometry (LC-MRM-MS) to determine pharmacokinetic parameters.

Time frame:
For each study period, a 48-hour post-administration period (15 minutes, 30 minutes, 45 minutes, 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 3.5 hours, 4 hours, 5 hours, 6 hours, 9 hours, 12 hours, 24 hours, and 48 hours)
Reported as:
Mean · ng/ml
Maximum Plasma Concentration (Cmax) of Withanolides After Shoden Administration
ng/mlShoden 240 mgShoden 480 mg
Withaferin A3.02 ± 0.7613.69 ± 7.36
Isomer of 4-oxo Withaferin A46.82 ± 1.66187.62 ± 120.77
Sominone10.24 ± 6.4833.45 ± 14.42
Isomer of 2,3-Didehydrosomnifericin19.62 ± 16.0435.28 ± 17.60
SecondaryTime of Maximum Concentration of Withanolides After Shoden Administration

The time of maximum (tmax) of withanolides over the first 48 hours post-Shoden administration will be calculated using liquid chromatography coupled to multiple reaction monitoring mass spectrometry (LC-MRM-MS).

Time frame:
For each study period, a 48-hour post-administration period (15 minutes, 30 minutes, 45 minutes, 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 3.5 hours, 4 hours, 5 hours, 6 hours, 9 hours, 12 hours, 24 hours, and 48 hours)
Reported as:
Mean · hours
Time of Maximum Concentration of Withanolides After Shoden Administration
hoursShoden 240 mgShoden 480 mg
Withaferin A0.88 ± 0.181.25 ± 0.66
Isomer of 4-oxo Withaferin A3.25 ± 0.352.83 ± 0.58
Sominone5.50 ± 0.715.67 ± 0.58
Isomer of 2,3-Didehydrosomnifericin0.75 ± 0.352.00 ± 0.50
SecondaryHalf-life of Withanolides After Shoden Administration

The half-life (t1/2) of withanolides will be calculated using liquid chromatography coupled to multiple reaction monitoring mass spectrometry (LC-MRM-MS).

Time frame:
For each study period, a 48-hour post-administration period (15 minutes, 30 minutes, 45 minutes, 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 3.5 hours, 4 hours, 5 hours, 6 hours, 9 hours, 12 hours, 24 hours, and 48 hours)
Reported as:
Mean · hours
Half-life of Withanolides After Shoden Administration
hoursShoden 240 mgShoden 480 mg
Withaferin A2.0 ± 0.05.0 ± 3.1
Isomer of 4-oxo withaferin A18.1 ± 4.824.1 ± 12.3
Sominone4.7 ± 2.47.7 ± 4.9
Isomer of 2,3-didehydrosomnifericin6.2 ± 6.110.3 ± 3.1
SecondarySteady-state Concentration of Selected Withanolides in Plasma

Concentration (ng/ml) of selected withanolides in plasma after four weeks' use

Time frame:
For each study period, steady state concentration will be collected during week 4 following four weeks' daily use of Shoden.
Reported as:
Mean · ng/ml
Steady-state Concentration of Selected Withanolides in Plasma
ng/mlShoden 240 mgShoden 480 mg
Withaferin A1.13 ± 0.602.35 ± 1.07
Isomer of 4-oxo Withaferin A24.11 ± 7.1341.94 ± 19.36
Sominone14.93 ± 10.8923.40 ± 2.67
Isomer of 2,3-Didehydrosomnifericin13.35 ± 1.8436.91 ± 19.50
SecondaryUrine Concentration of Withanolides After Shoden Administration

The concentration (ng/ml) of withanolides in urine will be measured in a pooled urine sample over 12 hours post-Shoden administration.

Time frame:
For each study period, urine collected over the first 12 hours post-Shoden administration.
Reported as:
Mean · micrograms excreted in 12 hours
Urine Concentration of Withanolides After Shoden Administration
micrograms excreted in 12 hoursShoden 240 mgShoden 480 mg
Free withaferin A133.5 ± 115.3172.9 ± 151.1
Free isomer of 4-oxo-withaferin A95.8 ± 17.9230.3 ± 73.7
Isomer of 4-oxo-withaferin A as Phase II conjugates25.5 ± 0.824.0 ± 86.2
Sominone as Phase II conjugates61.7 ± 29.276.8 ± 25.2
Free isomer of 2,3-didehydrosomnifericin234.8 ± 139.9663.1 ± 222.6
SecondaryNumber of Participants With Abnormal ECG Readings (7 Hours)

Resting electrocardiography will be measured using a ten-lead electrocardiogram at the zero-minutes timepoint and 7 hours post-Shoden administration. Electrocardiogram changes will be assessed and alternative clinical explanations considered, in order to determine if any changes are attributable to the study intervention. The number of participants with abnormal ECG readings at 7 hours compared to baseline will be reported.

Time frame:
For each study period, electrocardiography will be assessed at 0 and 7 hours post-Shoden administration. For pharmacokinetics visits that were halted early, ECG was collected at 24 hours.
Reported as:
Count of participants · Participants
Number of Participants With Abnormal ECG Readings (7 Hours)
ParticipantsShoden 240 mgShoden 480 mg
Number of Participants With Abnormal ECG Readings (7 Hours)00
SecondaryNumber of Participants With Abnormal ECG Readings (4 Weeks)

Resting electrocardiography will be measured using a ten-lead electrocardiogram at the zero-minutes timepoint and 4-weeks post-Shoden administration. Electrocardiogram changes will be assessed and alternative clinical explanations considered, in order to determine if any changes are attributable to the study intervention. The number of participants with abnormal ECG readings at 4 weeks compared to baseline will be reported.

Time frame:
For each study period, electrocardiography will be assessed at 0 and 4 weeks post-Shoden administration.
Reported as:
Count of participants · Participants
Number of Participants With Abnormal ECG Readings (4 Weeks)
ParticipantsShoden 240 mgShoden 480 mg
Number of Participants With Abnormal ECG Readings (4 Weeks)00
SecondaryMean Change in ALT (10 Hours)

A comprehensive metabolic panel will measure alanine aminotransferase and in units per liter as a marker of liver function. Enzyme levels falling outside the normal range will be compared to baseline levels, and alternative clinical explanations considered, in order to determine if elevations are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

Time frame:
For each study period, liver function will be assessed at 0 and 10 hours post-Shoden administration. For pharmacokinetics visits that were halted early, safety labs were collected at 24 hours.
Reported as:
Mean · U/L
Mean Change in ALT (10 Hours)
U/LShoden 240 mgShoden 480 mg
Mean Change in ALT (10 Hours)0 ± 2.2-1 ± 1.7
SecondaryMean Change in ALT (4 Weeks)

A comprehensive metabolic panel will measure alanine aminotransferase and in units per liter as a marker of liver function. Enzyme levels falling outside the normal range will be compared to baseline levels, and alternative clinical explanations considered, in order to determine if elevations are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

Time frame:
For each study period, liver function will be assessed at 0 and 4 weeks post-Shoden administration.
Reported as:
Mean · U/L
Mean Change in ALT (4 Weeks)
U/LShoden 240 mgShoden 480 mg
Mean Change in ALT (4 Weeks)5.3 ± 8.5-0.4 ± 3.6
SecondaryMean Change in AST (10 Hours)

A comprehensive metabolic panel will measure aspartate aminotransferase and in units per liter as a marker of liver function. Enzyme levels falling outside the normal range will be compared to baseline levels, and alternative clinical explanations considered, in order to determine if elevations are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

Time frame:
For each study period, liver function will be assessed at 0 and 10 hours post-Shoden administration. For pharmacokinetics visits that were halted early, safety labs were collected at 24 hours.
Reported as:
Mean · U/L
Mean Change in AST (10 Hours)
U/LShoden 240 mgShoden 480 mg
Mean Change in AST (10 Hours)-0.8 ± 2.1-1.2 ± 1.6
SecondaryMean Change in AST (4 Weeks)

A comprehensive metabolic panel will measure aspartate aminotransferase and in units per liter as a marker of liver function. Enzyme levels falling outside the normal range will be compared to baseline levels, and alternative clinical explanations considered, in order to determine if elevations are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

Time frame:
For each study period, liver function will be assessed at 0 and 4 weeks post-Shoden administration.
Reported as:
Mean · U/L
Mean Change in AST (4 Weeks)
U/LShoden 240 mgShoden 480 mg
Mean Change in AST (4 Weeks)3 ± 30.8 ± 1.3
SecondaryMean Change in Creatinine (10 Hours)

A comprehensive metabolic panel will measure creatinine as a marker of kidney function. Each parameter falling outside the normal range (0.5 to 1.2 milligrams per deciliter) will be compared to baseline values. If elevations are observed, alternative clinical explanations will be considered to determine if elevations are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to 10-hours post-Shoden administration for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

Time frame:
For each study period, liver function will be assessed at 0 and 10 hours post-Shoden administration. For pharmacokinetics visits that were halted early, safety labs were collected at 24 hours.
Reported as:
Mean · mg/dL
Mean Change in Creatinine (10 Hours)
mg/dLShoden 240 mgShoden 480 mg
Mean Change in Creatinine (10 Hours)0.02 ± 0.040.002 ± 0.06
SecondaryMean Change in Creatinine (4 Weeks)

A comprehensive metabolic panel will measure creatinine as a marker of kidney function. Each parameter falling outside the normal range (0.5 to 1.2 milligrams per deciliter) will be compared to baseline values. If elevations are observed, alternative clinical explanations will be considered to determine if elevations are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

Time frame:
For each study period, liver function will be assessed at 0 and 4 weeks post-Shoden administration.
Reported as:
Mean · mg/dL
Mean Change in Creatinine (4 Weeks)
mg/dLShoden 240 mgShoden 480 mg
Mean Change in Creatinine (4 Weeks)0.05 ± 0.070.10 ± 0.07
SecondaryMean Change in Thyroid-stimulating Hormone (4 Weeks)

Thyroid-stimulating hormone will be measured in units of milli-international units per liter as a marker of thyroid function. Any changes in hormone levels will be compared to baseline levels. Alternative clinical explanations will be considered in order to determine if any changes in hormone levels are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

Time frame:
For each study period, thyroid-stimulating hormone will be assessed at 0 minutes post-Shoden administration and four weeks post-Shoden administration.
Reported as:
Mean · mIU/L
Mean Change in Thyroid-stimulating Hormone (4 Weeks)
mIU/LShoden 240 mgShoden 480 mg
Mean Change in Thyroid-stimulating Hormone (4 Weeks)-0.3 ± 1.4-0.3 ± 0.3
SecondaryMean Change in Testosterone (4 Weeks)

Testosterone will be measured in units of nanograms per deciliter. Any changes in hormone levels will be compared to baseline levels. Alternative clinical explanations will be considered in order to determine if any changes in testosterone levels are attributable to the study intervention. Changes in testosterone will be analyzed by sex, by dose.

Time frame:
For each study period, testosterone will be assessed at 0 minutes post-Shoden administration and four weeks post-Shoden administration.
Reported as:
Mean · ng/dL
Mean Change in Testosterone (4 Weeks)
ng/dLMale Participants - 240 mgFemale Participants - 240 mgMale Participants - 480 mgFemale Participants - 480 mg
Mean Change in Testosterone (4 Weeks)113 ± NA-1.5 ± 3.5179 ± NA-1.5 ± 2.9
SecondaryMean White Blood Cell Count (4 Weeks)

White blood cells will be measured in units of cells per cubic millimeter. Any changes in red blood cell levels will be compared to baseline levels. Alternative clinical explanations will be considered in order to determine if any changes in red blood cells are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

Time frame:
For each study period, white blood cells will be assessed at 0 minutes post-Shoden administration and four weeks post-Shoden administration.
Reported as:
Mean · 10^3 cells/microliter
Mean White Blood Cell Count (4 Weeks)
10^3 cells/microliterShoden 240 mgShoden 480 mg
Mean White Blood Cell Count (4 Weeks)-0.5 ± 0.50.0 ± 1.3
SecondaryMean Change in Red Blood Cell Count (4 Weeks)

Red blood cells will be measured in units of cells per cubic millimeter. Any changes in red blood cell levels will be compared to baseline levels. Alternative clinical explanations will be considered in order to determine if any changes in red blood cells are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

Time frame:
For each study period, red blood cells will be assessed at 0 minutes post-Shoden administration and four weeks post-Shoden administration.
Reported as:
Mean · 10^6 cells/µL
Mean Change in Red Blood Cell Count (4 Weeks)
10^6 cells/µLShoden 240 mgShoden 480 mg
Mean Change in Red Blood Cell Count (4 Weeks)0.1 ± 0.2-0.5 ± 1.0
SecondaryMean Change in Hemoglobin (4 Weeks)

Hemoglobin will be measured in grams per deciliter. Any changes in hemoglobin will be compared to baseline levels. Alternative clinical explanations will be considered in order to determine if any changes in hemoglobin are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

Time frame:
For each study period, hemoglobin will be assessed at 0 minutes post-Shoden administration and four weeks post-Shoden administration.
Reported as:
Mean · g/dL
Mean Change in Hemoglobin (4 Weeks)
g/dLShoden 240 mgShoden 480 mg
Mean Change in Hemoglobin (4 Weeks)0.3 ± 0.60.04 ± 0.7
SecondaryMean Change in Hematocrit (4 Weeks)

Hematocrit will be measured in percent. Any changes in hematocrit will be compared to baseline levels. Alternative clinical explanations will be considered in order to determine if any changes in hematocrit are attributable to the study intervention. Changes in laboratory outcomes from the baseline visit to the four-week follow-up visit for each study period will be presented using descriptive statistics (e.g., means and standard deviations, frequency and percent).

Time frame:
For each study period, hematocrit will be assessed at 0 minutes post-Shoden administration and four weeks post-Shoden administration.
Reported as:
Mean · percentage of total blood volume
Mean Change in Hematocrit (4 Weeks)
percentage of total blood volumeShoden 240 mgShoden 480 mg
Mean Change in Hematocrit (4 Weeks)1.1 ± 1.81.2 ± 2.2
SecondaryPercentage of REDCap Surveys Completed

The feasibility of administering REDCap surveys will be assessed by calculating the percentage of administered questionnaires that are returned and fully completed by participants, with feasibility defined as at least 80% of all administered questionnaires returned and completed.

Time frame:
For each study period, prior to the pharmacokinetics visit and prior to the four-week follow-up visit
Reported as:
Number · percentage of questionnaires completed
Percentage of REDCap Surveys Completed
percentage of questionnaires completedShoden 240 mgShoden 480 mg
Percentage of REDCap Surveys Completed88.990.9

Adverse events

Collected over For each study period (240 or 480 mg Shoden), an adverse events questionnaire was administered at baseline, 12 hours, 48 hours, 2 weeks, and 4 weeks. An adverse events questionnaire was also administered at the exit phone call, which was conducted two weeks after the final clinic visit (final clinic visit occurred up to 12 weeks post baseline of first study period).. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Shoden 240 mg0/5 (0%)0/5 (0%)5/5 (100%)
Shoden 480 mg0/6 (0%)0/6 (0%)6/6 (100%)
Most frequent other events
Showing 10 of 27
Most frequent other events
EventShoden 240 mgShoden 480 mg
DiarrheaGastrointestinal disorders2/55/6
IndigestionGastrointestinal disorders1/53/6
Muscle achesMusculoskeletal and connective tissue disorders2/51/6
FatigueGeneral disorders2/52/6
NauseaGastrointestinal disorders1/52/6
VomitingGastrointestinal disorders0/52/6
HeadacheNervous system disorders1/52/6
DrowsinessGeneral disorders1/52/6
Abdominal crampsGastrointestinal disorders1/52/6
Dry skinSkin and subcutaneous tissue disorders0/52/6

Baseline characteristics

Total number of participants enrolled and randomized to a sequence group.

Age, Continuous
Age, Continuous(years)All Study Participants
Mean69.7 ± 3.8
Sex: Female, Male
Sex: Female, Male(Participants)All Study Participants
Female5
Male2
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)All Study Participants
Hispanic or Latino0
Not Hispanic or Latino7
Unknown or Not Reported0
Race (NIH/OMB)
Race (NIH/OMB)(Participants)All Study Participants
American Indian or Alaska Native0
Asian0
Native Hawaiian or Other Pacific Islander0
Black or African American0
White7
More than one race0
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(participants)All Study Participants
United States7
Body Mass Index
Body Mass Index(kg/m^2)All Study Participants
Mean23.9 ± 2.7
Systolic Blood Pressure
Systolic Blood Pressure(mmHg)All Study Participants
Mean134.6 ± 14.7
Diastolic Blood Pressure
Diastolic Blood Pressure(mmHg)All Study Participants
Mean73.0 ± 5.5

1 further baseline measures are reported on the registry.

08

Study locations

1 site
  • Oregon Health & Science University
    Portland, Oregon 97239, United States
09

References and documents

Study documents

  • Protocol and statistical analysis plan · Oct 10, 2024
  • Informed consent form · Dec 13, 2024

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: Yes — The individual coded participant data that support the published results will be available to be shared for research purposes. Data, plasma, and urine specimens will be stored for future research in a repository. All data/specimens will be coded with each participant's identification code, visit number, and date of collection. Data will be available four months after publication ending five years post article publication. For repository requests, the repository guardian Alex Speers (speers@ohsu.edu) or designee will review the requestor's institutional review board approval memo, protocol, and repository sharing agreement before samples/data are released. Separate institutional review board approval/determination will be required for each specific human subject research activity that uses coded data/specimens from the repository.

Supporting information: Study protocol, Sap, Icf, Analytic code

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 9, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT06171724
Lead sponsor
Oregon Health and Science University
Collaborators
National Center for Advancing Translational Sciences (NCATS)
Responsible party
Alex Speers, ND (Assistant Professor, Oregon Health and Science University) — Principal investigator
First posted
Dec 15, 2023
Start date
Apr 8, 2024
Primary completion
Nov 1, 2024
Completion
Dec 9, 2024
Results posted
Apr 9, 2026
Last update
Apr 9, 2026

Study contacts

Alex Speers, ND
principal investigator · Oregon Health and Science University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Mar 2026. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion