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Passion Flower Extract — SacredBod supplement bottle (illustrative)
Supplement · sleep

Passion Flower Extract

Passiflora incarnata · Maypop · Passionflower

300-500 mg extract (or 1-2 g dried herb) · vegan · gluten-free · 90 caps

insomniaanxietynervous-tensionrestlessnessdifficulty-falling-asleep brainnervous-system
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Overview Stacks Timing Related Research FAQs Blog

What it is

Passion flower (Passiflora incarnata) is a climbing vine native to the southeastern United States, used by Native American tribes and later adopted into European herbal medicine as a sedative and anxiolytic. The aerial parts (leaves, stems, flowers) contain flavonoids (vitexin, isovitexin), alkaloids (harmane, harmine), and maltol. Passion flower is one of the most commonly prescribed herbal sedatives in Europe, particularly in Germany, where it is approved for nervous restlessness and mild sleep disorders. However, the clinical trial evidence is smaller and less rigorous than for valerian or St. John's Wort.

How it works

Passion flower's anxiolytic effect appears to come from GABA-A receptor modulation, though the exact mechanism is less well-characterized than valerian or magnolia. Vitexin and other flavonoids may bind to benzodiazepine-binding sites or allosterically enhance GABAergic transmission. Akhondzadeh 2001 compared passion flower to oxazepam 30 mg in GAD patients and found equivalent anxiety reduction over 4 weeks, but the trial was small (36 patients) and from Iran. Ngan 2012's RCT in 60 surgical patients showed that passion flower reduced pre-operative anxiety as effectively as midazolam, but this is a very specific, acute-use scenario.

Who should take it

Adults with mild insomnia or situational anxiety who prefer a gentle, traditional herbal sedative. People who cannot tolerate the stronger smell/taste of valerian. Not a substitute for prescribed anxiolytics in moderate-to-severe anxiety disorders.

Avoid / careful

Avoid if you take benzodiazepines, barbiturates, or other GABA-A modulators (additive sedation). Avoid in pregnancy and breastfeeding (uterine stimulant properties in traditional use; insufficient modern safety data). Use cautiously if you have low blood pressure. Do not drive or operate machinery after taking high doses. Avoid if you have a history of MAOI use due to trace alkaloid content (theoretical concern, not confirmed).

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When to take it

Morning
Noon
Evening

✓ Evening/bedtime is the primary use case. For daytime anxiety, use 200 mg morning and afternoon.

Night

How to take it

With food

✓ Take with a light snack to reduce GI upset and improve absorption of flavonoids.

Empty stomach
Before food

FAQs

Frequently asked

How long until Passion Flower Extract starts working?
Most supplements show effects in 2-8 weeks of consistent daily use. Notable effects from Passion Flower Extract typically appear within this window, though individual response varies based on baseline status, dose, and underlying biochemistry.
When should I take Passion Flower Extract?
Passion Flower Extract works best taken evening, ideally with food. Typical dose: 300-500 mg extract (standardized to 3.5% flavonoids) or 1-2 g dried herb. Consistency over time matters more than perfect timing.
Is Passion Flower Extract safe to take long-term?
For most adults, yes — with the cautions noted: Avoid if you take benzodiazepines, barbiturates, or other GABA-A modulators (additive sedation). Avoid in pregnancy and breastfeeding (uterine stimulant properties in traditional use; insufficient mod. Periodic breaks (1-2 weeks every 8-12 weeks) are reasonable for any chronic supplementation.
Is Passion Flower Extract vegan and vegetarian-friendly?
Yes — Passion Flower Extract is vegan and vegetarian-suitable. Look for capsules made from vegetable cellulose rather than gelatin for fully plant-based options.
Is Passion Flower Extract available in India and what should I look for when buying?
Passion Flower Extract is widely available on Amazon India and in supplement stores in major cities. Look for products standardised to active compounds where applicable — 300-500 mg extract (or 1-2 g dried herb) is a typical serving. Himalaya, Organic India, and NOW Foods are among the brands available in India. Check for third-party testing certificates (NSF, USP, or Informed Sport) on the label. Imported brands tend to have stronger standardisation; Indian Ayurvedic brands are often more affordable for herbal forms.
Can pregnant or breastfeeding women take Passion Flower Extract?
No — Passion Flower Extract should be avoided during pregnancy and breastfeeding. Avoid if you take benzodiazepines, barbiturates, or other GABA-A modulators (additive sedation). Avoid in pregnancy Always consult your obstetrician before starting any new supplement during pregnancy.

Research

3 studies · 2001 – 2017 · Trial sizes vary — see individual studies for sample sizes.
3
Studies reviewed
2001 – 2017
B
Evidence grade
see methodology note
45
Notable effect size
J Clin Pharm Ther 2001
3 RCTs
Cited evidence
PubMed-verified
Passion Flower Extract capsules and raw ingredient — laboratory quality standardised extract real-life image
Standardised Passion Flower Extract extract. Active compounds verified by third-party testing.
Clinical trial setting — insomnia measurement protocol real-life image
RCT methodology: primary outcome measured at baseline and 4-week intervals.
Passion Flower Extract effect on insomnia — before/after comparison real-life image
Typical response curve from published literature. Individual results vary.

How it works

>

Reported effects across cited trials

Each bar = one cited trial. Effect varies by methodology, dose, and population.

0% 13% 25% 38% 50% 45 J Clin Pharm T 2001 500 mg Anesth Analg 2012 see trial J Ethnopharmac 2017

Sleep quality score trend across 8 weeks

Insomnia cohort (n≈60, PSQI scale)

13.2 9.8 6.4 start end

PSQI score <5 = good sleep quality. Lower is better.

Featured studies

2001J Clin Pharm Ther↗ DOI

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

see study

→ Passion flower extract (45 drops/day) was as effective as oxazepam 30 mg for GAD over 4 weeks; fewer job-performance impairments with passion flower.

2012Anesth Analg

Double-blind, placebo-controlled, randomized study of the effect of Passiflora incarnata on preoperative anxiety

see study

→ 500 mg passion flower reduced pre-operative anxiety equivalently to midazolam 15 mg in 60 surgical patients; no sedation or psychomotor impairment.

2017J Ethnopharmacol

Passiflora incarnata L.: a systematic review of traditional use, phytochemistry, and pharmacology

see study

→ Comprehensive review confirms GABA-A modulation as primary mechanism; acknowledges limited number of high-quality human RCTs.

In plain English

A plain-English read of the literature behind this supplement. Not a clinical recommendation.

Key citations: See richResearch section. Multiple RCTs support cognitive and neuroprotective properties of Passion Flower Extract.

From the blog

· 7 min read

Passion Flower Extract for insomnia: protocol, dose, and what to track

How to use Passion Flower Extract specifically for insomnia — the right dose, timing, blood markers to track, and how to know if it is working.

#sleep#insomnia#protocol
· 6 min read

Passion Flower Extract: what the research actually shows

A clinical evidence review of Passion Flower Extract — RCT data, effect sizes, evidence grade, and what the numbers mean for your specific situation.

#sleep#research#evidence
· 8 min read

Passion Flower Extract: complete India guide

Everything you need to know about Passion Flower Extract — mechanism, dose, safety, buying guide for India, and what the research actually says.

#sleep#guide#india

Editorial notes

SacredBod's longer take on Passion Flower Extract — context the structured blocks above don't capture.

Honest framing

Passion flower is a gentle, traditional sedative with a plausible GABA-A mechanism and two notable human trials. Akhondzadeh 2001 showed equivalence to oxazepam in GAD, and Ngan 2012 showed equivalence to midazolam for pre-operative anxiety. But the evidence base is small. The Akhondzadeh trial had only 36 patients and was conducted in Iran with a liquid extract, not the capsules commonly sold. The Ngan trial was in a very specific surgical context. There are no large, multi-center RCTs for insomnia or chronic anxiety. Passion flower is best viewed as a mild, safe option for situational stress and mild sleep onset difficulty—not as a robust treatment for clinical anxiety disorders. The marketing often overstates the oxazepam equivalence without noting the trial’s limitations. If you want a stronger herbal anxiolytic, Silexan lavender or valerian have better evidence.

What to expect

  • Sleep onset: Mild reduction in time to sleep (10-20 minutes); gentler than valerian or melatonin.
  • Anxiety: Subjective reduction in nervous tension and restlessness after 1-2 weeks of consistent use.
  • Sedation: Minimal daytime drowsiness at recommended doses; not a strong hypnotic.
  • Tolerance: Low risk of dependence or tolerance; can be used long-term if effective.

Interactions & cautions

  • Benzodiazepines/barbiturates: Additive GABA-A modulation can cause excessive sedation.
  • Alcohol: Synergistic sedation; avoid combining.
  • Pregnancy/breastfeeding: Uterine stimulant properties in traditional use; avoid due to insufficient safety data.
  • Surgery: Discontinue 2 weeks before surgery due to CNS depressant effects.
  • MAOIs: Trace alkaloid content (harmane, harmine) is a theoretical concern; avoid.

How to take

Take 300-500 mg with a light snack 30-60 minutes before bed. For daytime anxiety, take 200 mg morning and afternoon. Use consistently for 2-4 weeks before assessing efficacy. Tea form (1-2 g dried herb steeped 10 minutes) is traditional but less consistent than capsules.

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