Is Black Pepper safe?

Piperine can increase absorption of medications as well as supplements — this may cause unintended drug interactions or overdose effects with prescription drugs

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Last verified: 42 days ago

Black Pepper

Also known as: Piper nigrum, piperine, black pepper extract, black pepper essential oil

Evidence under review. — Not yet rated

Common spice whose active compound piperine may boost absorption of other supplements, but standalone benefits are limited.

What it does

Black pepper is a widely used culinary spice whose active compound, piperine, is best known as a 'bioenhancer' — meaning it may help your body absorb other compounds, particularly curcumin from...
Evidence quality

Evidence base hasn't been formally rated yet. See research below.
Clinical dose

No established dose from provided studies for standalone use; used as bioenhancer at 5 mg piperine alongside other compounds
Found in

NaturaLife Labs Organic Ashwagandha 2100 mg, Thorne Curcumin Phytosome - Sustained Released, 310 Nutrition Vanilla Crème Shake and 17 more

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What the Science Says

Black pepper is a widely used culinary spice whose active compound, piperine, is best known as a 'bioenhancer' — meaning it may help your body absorb other compounds, particularly curcumin from turmeric. In one clinical trial, combining curcumin with piperine (5 mg) reduced inflammation markers like CRP in critically ill COVID-19 patients. Early lab research also suggests piperine may help sensitize certain cancer cells to chemotherapy drugs, though this has not been tested in humans.

What It Doesn't Do

Won't burn fat on its own — the topical fat-loss lotion study showed no meaningful effect. Not proven to treat depression in humans based on the provided data. No evidence it improves male fertility or sexual function in people — that research was done only in diabetic rats. Using a black pepper seed as acupressure is not the same as eating or supplementing with it.

Evidence-Based Benefits

Weak Evidence

Effective at: No established dose from provided studies for standalone use; used as bioenhancer at 5 mg piperine alongside other compounds

Source: auto-research

Absorption & Bioavailability

Unknown for standalone use. As a bioenhancer, piperine is thought to slow gut metabolism and increase absorption of co-administered compounds like curcumin, but the provided studies do not directly measure piperine's own absorption.

Red Flags to Watch For

Piperine can increase absorption of medications as well as supplements — this may cause unintended drug interactions or overdose effects with prescription drugs
Spices including black pepper have been found to contain potentially toxic elements like arsenic, cadmium, and heavy metals, with children at greater risk
Black pepper adulteration is common — products may be diluted with fillers that have no health benefit
Most exciting claims (cancer, fertility, fat loss) come from lab or animal studies only — not human trials

Supplement

Misleading

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Research Sources

PubMed
NIH DSLD

This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-04-10