What do the states mean?+
- Solid: well studied, and it works.
- Half-there: the science is still forming.
- A ghost: almost no real studies.
- Hollow: well studied, and it does not work.
- A cord: the pair itself has been tested together.
- Air: nobody has ever tested this pair.
The full scoring method: How we score
Black pepper benefits: where the science stands
For boosting other supplements: not settled yet.
Boosting other supplements is what most people take black pepper for, and the best studies disagree: two found it helps, one found no effect. As of August 2026, the verdict on this page rests on evidence from 3 trials, drawn from the strongest research among the 115 papers on PubMed that mention black pepper. Every claim is checked below.
115 papers on PubMed · evidence from 3 trials
Claim by claim
- Boosting other supplementsThe science is still forming. The best studies disagree.
Pairs people ask about
The three sources we read
- 2018Meta-analysis · benefit for boosting other supplementssource
- 2022Randomized trial · benefit for boosting other supplementssource
- 2025Meta-analysis · no clear effect on boosting other supplementssource
Chosen as the strongest evidence out of 115 papers on PubMed. Every row links to its paper.
Fair questions
Does black pepper work?+
For boosting other supplements, it is not settled. The best studies disagree.
Is black pepper safe?+
No caution is recorded on this page. That is not a safety guarantee; the studies we read were not safety trials.
Why only 3 sources, when PubMed lists 115?+
The 115 is every paper that mentions black pepper in any way: animal studies, blood measurements, papers where it is a side note. The strongest sources are combined reviews, and each one already gathers every trial its authors could find. Our 3 cover 3 trials between them, and every one is linked above. Both counts are measured, not estimated.