Black Pepper

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

Evidence under review. — Not yet rated

Spice-derived ingredient best known for boosting absorption of other supplements like curcumin.

What it does

Black pepper comes from the Piper nigrum plant, and its active compound is piperine. It is most studied as a 'bioenhancer' — meaning it helps your body absorb other nutrients, especially curcumin...
Evidence quality

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

No established dose
Found in

Porefavor, HUM Best of Berberine 1200mg with BioPerine, 310 Nutrition Vanilla Crème Shake and 17 more

What the Science Says

Black pepper comes from the Piper nigrum plant, and its active compound is piperine. It is most studied as a 'bioenhancer' — meaning it helps your body absorb other nutrients, especially curcumin from turmeric. In combination with curcumin, small doses (around 5 mg piperine) have shown reductions in inflammation markers like CRP in clinical settings. Topically, black pepper essential oil has been explored for improving vein visibility before IV insertion.

What It Doesn't Do

Won't burn fat on its own — topical fat-loss lotions containing black pepper oil showed no meaningful results. Not a standalone treatment for depression, COVID-19, or chronic pain. No evidence it boosts testosterone or improves fertility in humans. Don't expect it to work as a primary supplement — it's a helper ingredient, not a hero.

Evidence-Based Benefits

Piperine helps your body absorb curcumin more effectively when taken together.

Weak Evidence

Effective at: 5 mg piperine with 500 mg curcumin

Supporting studies (click to view on PubMed):

PMID 37378780 PMID 41599836

Combined with curcumin, piperine reduced CRP and liver enzyme levels in ICU COVID-19 patients.

Weak Evidence

Effective at: 5 mg piperine + 500 mg curcumin x3 daily for 7 days

Supporting studies (click to view on PubMed):

PMID 37378780

Turmeric with black pepper reduced self-reported pain scores in adults with chronic pain.

Weak Evidence

Effective at: Dietary/culinary amounts of turmeric with black pepper

Supporting studies (click to view on PubMed):

PMID 41599836

Absorption & Bioavailability

Unknown for standalone use. As a bioenhancer, piperine is specifically noted for improving the absorption of other compounds (e.g., curcumin). Its own systemic absorption in humans is not well characterized in the provided studies.

Red Flags to Watch For

Piperine may potentiate liver toxicity when combined with turmeric/curcumin — a case report documents severe drug-induced autoimmune-like hepatitis recurrence linked to a turmeric-plus-black-pepper supplement
Topical fat-loss products containing black pepper essential oil showed no meaningful fat reduction — don't pay a premium for these
Most human evidence involves black pepper as an add-on to curcumin, not as a standalone ingredient — solo benefits in humans are largely unproven
Animal and lab studies (e.g., reproductive effects, nanoparticle cytotoxicity) cannot be directly applied to human supplementation

Products Containing Black Pepper

See how Black Pepper is used in these analyzed products:

Supplement

Mostly Legit

Sunfood Supergreens & Protein

Supplement

Overhyped

View all product reviews →

Frequently Asked Questions

What does Black Pepper do?

Spice-derived ingredient best known for boosting absorption of other supplements like curcumin.

What is the effective dose of Black Pepper?

No established dose

Is Black Pepper safe?

Piperine may potentiate liver toxicity when combined with turmeric/curcumin — a case report documents severe drug-induced autoimmune-like hepatitis recurrence linked to a turmeric-plus-black-pepper supplement

What doesn't Black Pepper do?

Won't burn fat on its own — topical fat-loss lotions containing black pepper oil showed no meaningful results.

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: 2026-05-25