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Timing of water intake may affect blood pressure in orthostatic hypotension

NCT ID NCT00581373

Knowledge-focused Sponsor: Satish R. Raj Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at whether drinking 16 ounces of water raises blood pressure more in the morning or the afternoon in people with orthostatic hypotension (a condition where blood pressure drops when standing). Twenty participants will drink water at two different times of day, and researchers will measure their blood pressure and heart rate for an hour after each drink. The goal is to understand if there is a daily rhythm in how the body responds to water.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
water
What this could lead to
If successful, this could help doctors time water intake to better manage blood pressure drops in people with orthostatic hypotension.
What could go wrong
This is a very small, early study (20 people) that only measures short-term blood pressure changes. It won't test long-term benefits or risks.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 20 people

The number the study aims to enrol. It can still change while the study runs.

Start date

Aug 2007

Expected to finish

Dec 2029

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 80 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * orthostatic intolerance Exclusion Criteria: * pregnancy

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Conditions

The condition(s) this trial relates to.

Hypotension, Orthostatic orthostatic hypotension postural orthostatic tachycardia syndrome

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Orthostatic hypotension

Contacts and locations

Locations

  • Vanderbilt University

    Nashville, Tennessee, 37232, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.