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
Passionflower benefits: where the science stands
For stress and anxiety: not settled yet.
On stress and anxiety, the strongest evidence says it helps (a combined review). As of August 2026, the verdict on this page rests on evidence from 1 trial, drawn from the strongest research among the 26 papers on PubMed that mention passionflower. Every claim is checked below.
26 papers on PubMed · evidence from 1 trial
Claim by claim
- Stress and anxietyThe science is still forming. Results lean positive, but there is not much yet.
Pairs people ask about
The source we read
- 2010Meta-analysis · benefit for stress and anxietysource
Chosen as the strongest evidence out of 26 papers on PubMed. Every row links to its paper.
Fair questions
Does passionflower work?+
For stress and anxiety, it is not settled. Results lean positive, but there is not much yet.
Is passionflower safe?+
No caution is recorded on this page. That is not a safety guarantee; the studies we read were not safety trials.
Why only 1 source, when PubMed lists 26?+
The 26 is every paper that mentions passionflower 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 1 cover 1 trials between them, and every one is linked above. Both counts are measured, not estimated.