ClinicalTrials.gg
CompletedNCT03466528AToM1Updated Jul 31, 2019

Alcohol: Thiamine and or Magnesium 1

A Phase 2/3 interventional study of Magnesium Sulfate and Pabrinex in Alcohol Withdrawal, Lactic Acidosis and Vitamin B1 Deficiency, sponsored by Glasgow Royal Infirmary. Completed at 1 site in United Kingdom. Open to participants aged 18 Years to 100 Years. Per ClinicalTrials.gov, last updated 2019-07-31.

Sponsored by Glasgow Royal Infirmary · Phase 2/3, Interventional, and Treatment

From the registry’s dates

  • Registered 1 year 1 month after the study started (first participant enrolled Dec 2016, registered Feb 2018).
Phase
Phase 2/3
Study type
Interventional
Enrollment
127
Allocation
Randomized
Ages
18 Years to 100 Years
Sex
All
01

Study summary

Patients who suffer Alcohol Use Disorder (AUD) have a 30-80% incidence of thiamine deficiency causing Wernicke's Encephalopathy (WE).

Intravenous (IV) thiamine replacement is standard practice in the treatment of alcoholic patients presenting to the Accident \& Emergency (A\&E) department, however routine co-supplementation with magnesium (administered IV as magnesium sulphate ), which is required as a co-factor for thiamine in some metabolic processes, e. g. on the activity of the enzyme transketolase in red blood cells, is not routine practice in the treatment of these patients. Without correction of concomitant magnesium deficiency there may be impaired utilisation of thiamine resulting in a failure to treat WE.

This study is designed to determine if administration of magnesium to AUD patients affects red cell transketolasae and serum lactate concentrations by itself, or only acts to increase the effect of thiamine on the activity of this enzyme.

Read the detailed description

This is a 3- arm randomised, open label, controlled study in a cohort of alcoholic patients admitted through A\&E. Patients will be randomised to concurrent infusion of one of the following:

  • Arm 1: IV thiamine
  • Arm 2: IV magnesium sulphate followed by delayed IV thiamine
  • Arm 3: IV thiamine and IV magnesium sulphate Thiamine will be administered as IV Pabrinex, a compound preparation which also contains B vitamins and vitamin C. Administration of IV Pabrinex is standard care in this patient group and magnesium sulphate is routinely co-administered at Glasgow Royal Infirmary.
02

Conditions studied

  • Alcohol Withdrawal
  • Lactic Acidosis
  • Vitamin B1 Deficiency
  • Magnesium Deficiency
  • Wernicke Encephalopathy
03

In context

Acidosis, Lactic

48 studies on the registry are indexed under Acidosis, Lactic; 5 are open to participants now.

This study's enrollment of 127 is above the median of 39 across 26 interventional studies indexed under Acidosis, Lactic.

Browse Acidosis, Lactic studies →

Lead sponsor

Glasgow Royal Infirmary is the lead sponsor of 6 studies on the registry; 1 is open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 100 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Written
  • Male or non-pregnant or breastfeeding females ≥18 years of age For women of a negative pregnancy test will be required prior to treatment.

(Women of non-childbearing potential are defined as those defined as women who are or permanently sterilised (e.g. hysterectomy, tubal occlusion, bilateral salpingectomy).

  • Chronic alcohol dependence as confirmed by
  • FAST questionnaire
  • GMAWS scale

Exclusion criteria

Exclusion Criteria:

  • Unable to give consent
  • Less than 18 years of age
  • Chronic renal or hepatic failure/hepatic encephalopathy (investigator assessment as documented in past medical history i.e. Clinical Portal.)
  • Known or previous allergy to any of the active substances in either trial medication, or to
  • Severe concurrent medical condition that would prevent participation in study procedures (e.g. myasthenia gravis, cardiac disease, or cardiac failure with severe pulmonary oedema)
Terms in these criteria, in plain language(6)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

05

Study design

Phase
Phase 2 / Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
127 participants (actual)

Study arms

  • Active comparator
    Standard treatment - Pabrinex alone

    Pabrinex alone

    Drug: Pabrinex

  • Active comparator
    Pabrinex + magnesium sulphate

    standard treatment and magnesium sulphate

    Drug: Magnesium Sulfate · Drug: Pabrinex

  • Experimental
    Magnesium sulphate alone

    This group receives the study intervention and delayed Pabrinex

    Drug: Magnesium Sulfate

Interventions

  • Intravenous (Magnesium Sulphate) MgSO4 2 grams IV over 20 minutes

    Also known as: MgSO4

  • DrugPabrinex

    standard treatment

    Also known as: comercial form of thiamine and B vitamin preparation

06

What researchers measure

Primary outcomes

  1. Change in Erythrocyte transketolase activity

    this is a biochemical marker of thiamine activity measured in units per gram of haemoglobin

    Time frame: 0 and 2 hours

  2. Change in serum lactate

    Biochemical marker of metabolic dysfunction (expressed as mmol/L)

    Time frame: 0 and 2 hours

  3. Change in rate of resolution of alcohol withdrawal syndrome

    time

    Time frame: days

Secondary outcomes

  1. lactate dehydrogenase

    biochemical (expressed in mmol/L)

    Time frame: 0 and 2 hours

  2. pre and post magnesium

    biochemical (expressed in mmol/L)

    Time frame: 0 and 2 hours

  3. pre and post red cell thiamine

    biochemical

    Time frame: 0 and 2 hours

  4. establish baseline micronutrient status of patients with alcohol withdrawal syndrome

    biochemical

    Time frame: o and 2 hours

07

Study locations

1 site
  • Glasgow Royal Infirmary
    Glasgow, G4 0SF, United Kingdom
08

References and documents

Publications

  • Maguire D, Burns A, Talwar D, Catchpole A, Stefanowicz F, Ross DP, Galloway P, Ireland A, Robson G, Adamson M, Orr L, Kerr JL, Roussis X, Colgan E, Forrest E, Young D, McMillan DC. Randomised trial of intravenous thiamine and/or magnesium sulphate administration on erythrocyte transketolase activity, lactate concentrations and alcohol withdrawal scores. Sci Rep. 2022 Apr 28;12(1):6941. doi: 10.1038/s41598-022-10970-x. PubMed 35484175 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Dec 2016 to primary completion in Apr 2018, 15 months.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 13, 2018
First posted
Mar 15, 2018
StartActual
Dec 16, 2016
Primary completionActual
Apr 2, 2018
CompletionActual
Jun 19, 2018
Last update
Jul 31, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 31, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03466528
Lead sponsor
Glasgow Royal Infirmary
Responsible party
Dr. Donogh Maguire (Emergency Medicine Consultant, Glasgow Royal Infirmary) — Principal investigator
First posted
Mar 15, 2018
Start date
Dec 16, 2016
Primary completion
Apr 2, 2018
Completion
Jun 19, 2018
Last update
Jul 31, 2019

Study contacts

Donogh Maguire, MB BCh
principal investigator · NHS GGC

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 completed, as verified in Jul 2019. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: Magnesium Sulfate

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