Research

Passionflower

13 peer-reviewed studies curated from PubMed and Semantic Scholar.

1
Meta-analyses
1
Systematic reviews
6
RCTs
5
Other studies
Meta-analyses (8%)
Systematic reviews (8%)
RCTs (46%)

Studies

Sorted by quality and recency

2020·Nutrients·Katarzyna Janda, Karolina Wojtkowska, Karolina Jakubczyk, et al

in Neuropsychiatric Disorders-A Systematic Review.

Systematic reviewStress Sleep Mood

Systematic review of nine clinical trials evaluating the effects of passionflower on neuropsychiatric disorders. The majority of studies reported reduced anxiety levels following the administration of passionflower preparations, with no adverse effects observed.

PubMedRead on PubMed
2020·International clinical psychopharmacology·Jeewon Lee, Han-Young Jung, Soyoung Irene Lee, et al

Effects of Passiflora incarnata Linnaeus on polysomnographic sleep parameters in subjects with insomnia disorder: a double-blind randomized placebo-controlled study.

RCTn = 110Sleep

Double-blind randomized placebo-controlled study investigating the effects of Passionflower on polysomnographic sleep parameters in 110 adults with insomnia disorder. Passionflower significantly increased total sleep time compared to placebo, with improvements in sleep efficiency and wake after sleep onset.

PubMedRead on PubMed
2007·The Cochrane database of systematic reviews·L S Miyasaka, A N Atallah, B G O Soares

Passiflora for anxiety disorder.

Meta-analysisn = 198Stress -

Meta-analysis of two studies with 198 participants examining the effectiveness of passiflora for anxiety disorders. One study indicated no difference in efficacy between benzodiazepines and passiflora, with similar dropout rates. Passiflora showed a non-significant improvement in job performance and lower drowsiness compared to mexazolam.

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2011·Journal of anesthesia·Pınar Aslanargun, Ozgun Cuvas, Bayazit Dikmen, et al

Passiflora incarnata Linneaus as an anxiolytic before spinal anesthesia.

RCTn = 60Stress

RCT investigating the effect of preoperative oral administration of Passiflora incarnata on anxiety, psychomotor functions, sedation, and hemodynamics in patients undergoing spinal anesthesia. Passiflora incarnata suppressed the increase in anxiety before spinal anesthesia without affecting psychomotor function, sedation level, or hemodynamics.

PubMedRead on PubMed
2001·Journal of clinical pharmacy and therapeutics·S Akhondzadeh, L Kashani, M Mobaseri, et al

Passionflower in the treatment of opiates withdrawal: a double-blind randomized controlled trial.

RCTn = 65Mental Clarity

Double-blind RCT of 65 opiate addicts comparing clonidine plus passiflora extract to clonidine plus placebo for 14 days. Both protocols were equally effective for physical withdrawal symptoms, but passiflora showed significant superiority in managing mental symptoms.

PubMedRead on PubMed
2025·Planta Medica·A. Brouns, Matthias Lechtenberg, A. Hensel

Passionflower (Passiflora incarnata) : Quality of Food Supplements Versus Registered Herbal Medicinal Products

Study

The paper investigates the quality of passionflower products marketed as food supplements versus registered herbal medicinal products in Europe. Analytical methods revealed that many food supplements did not meet specified content and identity, suggesting instances of food fraud, while all registered herbal medicinal products conformed to specifications.

Semantic ScholarRead on Semantic Scholar
2011·Phytotherapy research : PTR·A Ngan, R Conduit

A double-blind, placebo-controlled investigation of the effects of Passiflora incarnata (passionflower) herbal tea on subjective sleep quality.

RCTn = 41Sleep

Double-blind, placebo-controlled study investigating the effects of Passiflora incarnata herbal tea on sleep quality in 41 participants. Passionflower tea showed significantly better sleep quality ratings compared to placebo, suggesting short-term subjective sleep benefits.

PubMedRead on PubMed
2001·Journal of clinical pharmacy and therapeutics·S Akhondzadeh, H R Naghavi, M Vazirian, et al

Passionflower in the treatment of generalized anxiety: a pilot double-blind randomized controlled trial with oxazepam.

RCTn = 36Stress

A double-blind randomized trial compared the efficacy of Passiflora incarnata extract with oxazepam in treating generalized anxiety disorder in 36 patients. Both treatments were effective, but Passiflora extract had fewer issues with job performance impairment compared to oxazepam.

PubMedRead on PubMed
1997·Fundamental & clinical pharmacology·M Bourin, T Bougerol, B Guitton, et al

A combination of plant extracts in the treatment of outpatients with adjustment disorder with anxious mood: controlled study versus placebo.

RCTn = 182Mood

Multicenter, double-blind, placebo-controlled study of Euphytose (a combination of six plant extracts) in 182 outpatients with adjustment disorder with anxious mood. Euphytose group showed significant improvement in Hamilton-anxiety scores compared to placebo over 28 days.

PubMedRead on PubMed
2025·Russian Journal of Preventive Medicine·O. Gromova, I. Torshin

Systemic analysis of anti-stress, normothymic, and hypnotic effects of passionflower extracts standardized for luteolin-7-glucoside

ReviewStress Sleep Inflammation Brain Health

Systemic analysis of 1141 publications on passionflower extracts standardized for luteolin-7-glucoside. The extracts show mild calming effects, improve stress resistance, have sedative and hypnotic effects, and provide neuroprotection and anti-inflammatory benefits.

Semantic ScholarRead on Semantic Scholar
2025·PSU McNair Scholars Online Journal·K. Walsh

Examining the Anxiolytic Effects of Flavonoids in Passionflower: A Gut-Brain Axis Perspective

ReviewStress

This narrative review investigates the influence of Passiflora incarnata on the Gut-Brain Axis, focusing on flavonoids and their role in alleviating anxiety. The review suggests Passiflora incarnata as a potential alternative to modern anxiety medications and emphasizes the need for further clinical trials.

Semantic ScholarRead on Semantic Scholar
2025·Farmacja Polska·Anna Magiera, Marta Jagiełło, Anna Marchelak

Passionflower (Passiflora incarnata L.) as an element of phytotherapy for selected, indicated by the European Medicine Agency, central nervous system disorders

ReviewSleep Stress

Narrative review summarizing scientific data on Passiflora incarnata for treating sleep disorders and alleviating anxiety and stress. Highlights the need for further research on its pharmacodynamics, pharmacokinetics, safety, and mechanisms of action.

Semantic ScholarRead on Semantic Scholar
2023·Рецепт·Н.Н. Протько, Г.Д. Ситник, Н.С. Милюк, et al

Passionflower in the Treatment of Anxiety Disorders

ReviewStress

The article analyzes literature data on anxiety disorders and the use of passionflower (Passiflora incarnata) for their treatment. It describes the characteristics, composition, clinical effects, and indications for the use of passionflower in general medical practice.

Semantic ScholarRead on Semantic Scholar