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Study details
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A Study of Pyridostigmine in Postural Tachycardia Syndrome

Mayo Clinic
NCT IDNCT00409435ClinicalTrials.gov data as of Apr 2026
Phase

Phase 2

Target enrollment

50

Study length

about 19 years

Ages

15–55

Locations

1 site in MN

What this study is about

Researchers are testing whether pyridostigmine, a medication, improves tachycardia and stabilizes blood pressure in people with postural tachycardia syndrome (POTS). The trial will involve taking either placebo or 180 mg of pyridostigmine daily for three days. You will be randomly assigned to one group or the other. At each visit, you'll have medical exams, questionnaires about your symptoms, and some tests.

Simplified from trial records by PatientMatch.

What you may be asked to do

  • 1.Take Placebo
  • 2.Take pyridostigmine

Participation Burden

What's physically and logistically required of participants.

Logistics & Travel
In-person visits

Requires travel to a study site

Physical Intervention
Standard

How treatment is administered

Treatment Assignment
Randomized & Blinded

You may get a placebo/standard care, and you won't know which.

Extracted study details

Pulled from the trial record to show what is being tested and what the study is measuring.

Drug classes

pyridostigmine

Endpoints

Primary: Change in orthostatic symptoms using Composite Autonomic Symptom Scale (COMPASS) change

Secondary: Heart rate response to head-up tilt