Purple Passion Fruit Passiflora edulis peel (PFP) has a history of use with health challenges. In South American folk medicine, extracts of the peel have been used with anxiety, insomnia, asthma, and bronchitis. The extract contains three antioxidants (cyanidin-3O-glucoside, quercetin-3O-glucoside, and edulilic acid) and was "shown to modulate nitric oxide in hypertensive rats."
In a 2008 study with 42 subjects, all participants showed wheeze symptoms at baseline, but only 19.1 % of who took PFP and 78.9% of participants in the placebo group showed symptoms at the end of the study. In addition,
These results show that Passion Fruit Peel extract significantly improves asthmatic symptoms after four weeks of usage without adverse effects. The authors of the study concluded that: "PFP extract may be safely offered to asthmatic subjects as an alternative treatment option to reduce clinical symptoms."
References:
Watson RR, Zibadi S, Rafatpanah H, et al. Oral administration of the purple passion Fruit Peel Extract reduces wheeze and cough and improves shortness of breath in adults with asthma. Nutr Res. 2008;28: 166-171.
Based on article © Brenda Milot, ELS, "Efficacy of Purple Passion Fruit Peel Extract in Alleviating Asthmatic Symptoms in Adults," HerbClip