Low blood pressure (Hypotension)

Overview

SupplementDEX lists 2 supplements studied for low blood pressure (hypotension) across 3 trials. The strongest indexed signals include Black Tea, N-Acetyl Cysteine. See the heatmap and evidence reviews below for full ratings across all supplements.

Effect graph

Unlock now

Relevant supplements

Relevant supplements sorted by DEX Score.


Black Tea	★★★★★	Medium
N-Acetyl Cysteine (NAC)	★★★★★	Very Low / None

Unlock now

Studies

Find individual evidence reviews for supplements sorted by DEX Score.

2 supplements for and rated at least stars. All purchase bands. No minimum star filter.

Black TeaView supplement →

Reconsider purchase★★★★★

How we scored this

Effect SizeMediumEvidenceLowTrustMedium

Evidence Review

For older people who experience low blood pressure after meals (postprandial hypotension), drinking black tea can help raise blood pressure temporarily and prevent symptoms like dizziness.
This may be because the caffeine in black tea stimulates the nervous system and narrows blood vessels, counteracting the blood pressure drop after eating.
Drinking black tea multiple times a day, especially around meals, can increase blood pressure by a few points without raising it overall throughout the day.
This makes black tea a simple, natural option to help manage low blood pressure after eating in older adults.
The effect happens fairly quickly but fades within an hour.

Browse 2 studies

RCTEffect of coffee and tea drinking on postprandial hypotension in older men and women1996n=171

In 171 adults over 50, tea or coffee drinking attenuated postprandial systolic BP drops after meals versus abstaining from caffeine; tea reduced supine systolic fall by 3.8 mmHg in treated hypertensives.

Effect: Benefit
Population: Adults
Participants: 171
Ages: >50

View on PubMed

RCTThe effect of caffeine on postprandial hypotension in the elderly1991

In 7 fit elderly subjects, caffeine with a meal prevented the 14 mmHg postprandial fall in supine systolic BP seen with placebo, maintaining BP near baseline (+9 mmHg at 60 min).

Effect: Benefit
Population: Older adults

View on PubMed

N-Acetyl Cysteine (NAC)View supplement →

Do not purchase★★★★★

How we scored this

Effect SizeVery Low / NoneEvidenceLowTrustMedium

Evidence Review

Taking N-acetylcysteine by mouth for 7 days in people with long-lasting low blood pressure did not help protect the kidneys or lower the chance of kidney failure compared with a placebo.

Browse 1 study

RCTN-acetylcysteine for patients with prolonged hypotension as prophylaxis for acute renal failure (NEPHRON)2007

An RCT of 142 hypotensive ICU patients found NAC for 7 days did not reduce acute renal failure incidence (15.5% vs 16.9%) versus placebo.