Water pressure: can a second glass still boost blood pressure?

NCT ID NCT00580996

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

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at whether drinking water raises blood pressure as much the second time if you've already had a full glass a few hours earlier. Researchers are testing 20 adults with orthostatic hypotension, a condition where blood pressure drops when standing. Participants will drink either 16 ounces or 1 ounce of water, and their blood pressure and heart rate will be measured.

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 it works, this could help doctors understand how to best use water to manage blood pressure drops in orthostatic hypotension.
What could go wrong: This is a very small, early-stage study with only 20 participants. It is not testing a new treatment, just a physiological effect, so it may not change clinical practice.

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

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Conditions

The condition(s) this trial relates to.

Hypotension, Orthostatic orthostatic hypotension

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.