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CompletedNCT04195100Updated Feb 28, 2020

Local Pilocarpine for Relieving Dry Mouth

An Early Phase 1 interventional study of Pilocarpine Ophthalmic Solution in Patients of Advanced Age (≥ 70 Years) With a Clinical Diagnosis of Chronic Dry Mouth, sponsored by Maastricht University Medical Center. Completed at 1 site in Netherlands. Open to participants aged 70 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-02-28.

Sponsored by Maastricht University Medical Center · Early Phase 1, Interventional, and Supportive care

From the registry’s dates

  • Registered 8 months after the study started (first participant enrolled Apr 2019, registered Dec 2019).
Phase
Early Phase 1
Study type
Interventional
Enrollment
14
Allocation
Randomized
Ages
70 Years and older
Sex
All
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Study summary

The investigators intended for this study to deliver the "proof-of-concept" that locally administered pilocarpine drops in two doses are effective in a population of elderly (aged ≥ 70 years) with xerostomia at the expense of limited adverse events. To this end, the study aims to quantify the effect size of pilocarpine in two different dosages. In case the investigators observe clinically meaningful changes in xerostomia through measured NRS, a sufficiently-powered RCT will be prepared to compare pilocarpine to placebo.

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Conditions studied

  • Patients of Advanced Age (≥ 70 Years) With a Clinical Diagnosis of Chronic Dry Mouth

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Keywords

  • Xerostomia
  • Pilocarpine
  • advanced age (≥ 70 years)
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In context

Xerostomia

254 studies on the registry are indexed under Xerostomia; 47 are open to participants now.

This study's enrollment of 14 is below the median of 42 across 216 interventional studies indexed under Xerostomia.

Browse Xerostomia studies →

Lead sponsor

Maastricht University Medical Center is the lead sponsor of 835 studies on the registry; 122 are open to participants now.

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

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Who can participate

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

Inclusion criteria

  • ≥ 70 years of age
  • Clinical diagnosis of chronic dry mouth defined as a Numeric Rating Scale (NRS) score ≥ 5 (scale 0 - 10, with 0 = no dry mouth and 10= worst possible dry mouth) on severity of xerostomia for more than 3 months.

Exclusion criteria

Exclusion Criteria:

  • Existence of cognitive impairment and/or diagnosis of dementia appraised by treating physician
  • Inability to fill out the questionnaires due to other reasons
  • Prior radiation therapy of the head-and-neck region
  • Known m. Sjögren disease
  • Contra-indications for parasympathicomimetics (uncontrolled asthma, acute heart failure, active peptic ulceration, known hypersensitivity to pilocarpine, and when miosis is undesirable, e.g., in acute iritis and in narrow-angle (angle closure) glaucoma.
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Study design

Phase
Early Phase 1
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
14 participants (actual)

Study arms

  • Active comparator
    Low dose pilocarpine

    low dose pilocarpine = 3 x 2.0 mg = 3 x 2 drops of pilocarpine 20.0 mg/ml (2%) per day

    Drug: Pilocarpine Ophthalmic Solution

  • Active comparator
    High dose pilocarpine

    high dose pilocarpine = 3 x 5.0 mg = 3 x 5 drops of pilocarpine 20.0 mg/ml (2%) per day

    Drug: Pilocarpine Ophthalmic Solution

Interventions

  • DrugPilocarpine Ophthalmic Solution

    1. low dose pilocarpine = 3 x 2.0 mg = 3 x 2 drops of pilocarpine 20.0 mg/ml (2%) per day 2. high dose pilocarpine = 3 x 5.0 mg = 3 x 5 drops of pilocarpine 20.0 mg/ml (2%) per day

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What researchers measure

Primary outcomes

  1. Change in xerostomia score (Numeric Rating Scale)

    The Numeric Rating Scale is used to quantify the level of severity of xerostomia using a 0-10 cm Numeric Rating Scale ranging from 0 = no dry mouth to 10 = worst possible dry mouth

    Time frame: 3 weeks

  2. Change in oral health-related quality of life (Dutch Geriatric Oral Health Assessment Index)

    Questionnaires assessing Oral health-related quality of life of adults, in particular older people is measured 4 times during this study by the doctor/research nurse . It comprises 12 items that measure three dimensions of Oral health-related quality of life: physical function items, psychosocial function and pain/discomfort.

    Time frame: 2 weeks

Secondary outcomes

  1. Adverse effects

    adverse events or other symptoms

    Time frame: 3 weeks

  2. Global perceived effect

    The Global perceived effect scale asks the patient to rate, on a numerical scale, how much their condition has improved or deteriorated since some predefined time point.

    Time frame: 3 weeks

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Study locations

1 site
  • Maastricht University Medical Centre
    Maastricht, Limburg 6202 AZ Maastricht, Netherlands
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References and documents

Study documents

  • Study protocol · Feb 1, 2019

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

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 28, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04195100
Lead sponsor
Maastricht University Medical Center
Responsible party
Sponsor
First posted
Dec 11, 2019
Start date
Apr 1, 2019
Primary completion
Dec 1, 2019
Completion
Jan 31, 2020
Last update
Feb 28, 2020

Study contacts

Marieke van den Beuken, Prof
principal investigator · Maastricht University Medical Centre

Oversight

Data monitoring committee
Yes
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 Feb 2020. You cannot join it, but the record below documents what was studied.

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