What the evidence says. Early or small human trials; promising but not yet conclusive.
Nutrition per serving 2 medium fruits, pulp (36 g)
Water26.2 g73%
Sugars4 g11%
Fibre3.7 g10%
Other carbs0.7 g2%
Protein0.8 g2%
Fat0.3 g1%
What's in one serving, by weight — average composition (USDA).One serving as % of the adult daily requirement (FDA Daily Values). The bold outer ring = 100% of a day's needs.
Passion Fruit (Passiflora edulis) is a fruit used for exceptionally high soluble and insoluble fiber (about 10 g per 100 g) supporting satiety and bowel regularity. NutriDex grades the human evidence as Preliminary. Passion fruit pulp is a low-calorie, strikingly fiber-dense tropical fruit (about 10 g fiber per 100 g) that also supplies vitamin C, potassium, provitamin A carotenoids and polyphenols. Critically, most published human trials test the INEDIBLE peel (rind) flour or extract, or the seeds, rather than the edible pulp, so those benefits do not translate directly to eating the fruit. Small randomized trials of purple passion-fruit peel extract reported large drops in blood pressure and reduced asthma symptoms, but these were short (4 weeks), single-center, small, and led by overlapping investigator groups, and the reported BP reductions (about 31/25 mmHg) are implausibly large for a food supplement — so confidence is low. Yellow passion-fruit peel flour (~30-36 g/day) improved insulin resistance and HbA1c in one trial but showed no glycemic effect in a later randomized trial, so evidence is genuinely mixed. Seed-derived piceatannol (20 mg/day) improved insulin and blood pressure only in overweight men within a small 8-week study, and a separate trial found 5 mg/day improved skin moisture in women. No large prospective cohort or meta-analysis links passion-fruit consumption to hard health outcomes. Overall the human evidence is preliminary and largely about extracts, while the pulp's fiber and micronutrient density remain its best-supported nutritional value.
Purported Benefits
✓Exceptionally high soluble and insoluble fiber (about 10 g per 100 g) supporting satiety and bowel regularity
✓Purple peel extract lowered blood pressure in small short-term RCTs (effect sizes implausibly large; not the edible pulp)
✓Yellow peel flour and seed piceatannol may improve insulin sensitivity and glycemic markers (mixed RCTs)
✓Purple peel extract reduced asthma symptoms (wheeze, cough, dyspnea) in one small RCT
✓Seed piceatannol improved insulin and blood pressure in overweight men (subgroup) and skin moisture in women
✓Rich in antioxidant polyphenols (anthocyanins, flavonols, seed stilbenes) and carotenoids
Dosing & Compounds
Typical Dose
Pulp of 2-3 fruits (~36-55 g edible) as a whole-food serving. Studied benefits use the INEDIBLE peel (rind) flour/extract (150-400 mg/day extract, or ~36 g/day flour) or seed piceatannol (5-20 mg/day) — not the pulp itself.
Active Compounds
Soluble fiber / pectin (viscous gel-forming polysaccharides)Anthocyanins (cyanidin-3-O-glucoside)Flavonols (quercetin and kaempferol glycosides)Stilbenes (piceatannol and its dimer scirpusin B — seed-concentrated)Carotenoids (beta-carotene, provitamin A)Vitamin C (ascorbic acid)Edulilic acid (a Passiflora cyclic acid glucoside)Cyanogenic glycosides (trace, in seeds/unripe rind)Potassium and magnesium
Safety & Cautions
⚠
Generally safe as a food. Seeds and unripe rind contain trace cyanogenic glycosides, so eating large quantities of raw peel or seeds is not advised. People with latex allergy may cross-react (latex-fruit syndrome). The blood-pressure-lowering peel extracts could theoretically add to antihypertensive medication effects, and clinical drug-interaction data are limited. Peel-extract and piceatannol benefits come from concentrated, unregulated supplements rather than the pulp. A high fiber load may cause gas or GI discomfort in sensitive individuals. Educational only — always check with your doctor or pharmacist before combining Passion Fruit with any medicine.
Passion Fruit is most often taken for Exceptionally high soluble and insoluble fiber (about 10 g per 100 g) supporting satiety and bowel regularity, Purple peel extract lowered blood pressure in small short-term RCTs (effect sizes implausibly large; not the edible pulp), Yellow peel flour and seed piceatannol may improve insulin sensitivity and glycemic markers (mixed RCTs), Purple peel extract reduced asthma symptoms (wheeze, cough, dyspnea) in one small RCT. Fiber-dense tropical fruit with bioactive peel and seeds
Does Passion Fruit work — what does the evidence say?
Preliminary evidence. Early or small human trials; promising but not yet conclusive. Passion fruit pulp is a low-calorie, strikingly fiber-dense tropical fruit (about 10 g fiber per 100 g) that also supplies vitamin C, potassium, provitamin A carotenoids and polyphenols. Critically, most published human trials test the INEDIBLE peel (rind) flour or extract, or the seeds, rather than the edible pulp, so those benefits do not translate directly to eating the fruit. Small randomized trials of purple passion-fruit peel extract reported large drops in blood pressure and reduced asthma symptoms, but these were short (4 weeks), single-center, small, and led by overlapping investigator groups, and the reported BP reductions (about 31/25 mmHg) are implausibly large for a food supplement — so confidence is low. Yellow passion-fruit peel flour (~30-36 g/day) improved insulin resistance and HbA1c in one trial but showed no glycemic effect in a later randomized trial, so evidence is genuinely mixed. Seed-derived piceatannol (20 mg/day) improved insulin and blood pressure only in overweight men within a small 8-week study, and a separate trial found 5 mg/day improved skin moisture in women. No large prospective cohort or meta-analysis links passion-fruit consumption to hard health outcomes. Overall the human evidence is preliminary and largely about extracts, while the pulp's fiber and micronutrient density remain its best-supported nutritional value.
What is the typical dose of Passion Fruit?
Pulp of 2-3 fruits (~36-55 g edible) as a whole-food serving. Studied benefits use the INEDIBLE peel (rind) flour/extract (150-400 mg/day extract, or ~36 g/day flour) or seed piceatannol (5-20 mg/day) — not the pulp itself.
Is Passion Fruit safe? Any cautions or side effects?
Generally safe as a food. Seeds and unripe rind contain trace cyanogenic glycosides, so eating large quantities of raw peel or seeds is not advised. People with latex allergy may cross-react (latex-fruit syndrome). The blood-pressure-lowering peel extracts could theoretically add to antihypertensive medication effects, and clinical drug-interaction data are limited. Peel-extract and piceatannol benefits come from concentrated, unregulated supplements rather than the pulp. A high fiber load may cause gas or GI discomfort in sensitive individuals.
How many studies support Passion Fruit?
NutriDex cites 11 sources for Passion Fruit, graded "Preliminary".
Cite this page
APA
Peh, D. (2026). Passion Fruit (Passiflora edulis): Benefits, Dosage, Side Effects & Evidence. NutriDex — The Supplement Research Compendium. Retrieved 16 Sept 2026, from https://nutridex.info/s/passion-fruit
BibTeX
@misc{nutridex_passion_fruit,
author = {Peh, Daryl},
title = {Passion Fruit (Passiflora edulis): Benefits, Dosage, Side Effects \& Evidence},
year = {2026},
howpublished = {NutriDex --- The Supplement Research Compendium},
url = {https://nutridex.info/s/passion-fruit},
note = {Reviewed by Dr Daryl Peh, MBBS Singapore, MMed FM. Accessed 2026-09-16}
}
For medical claims, citing the underlying primary studies linked above is preferred. NutriDex is an educational reference, not medical advice.