Passionflower side effects
Across 186 first-hand reports, people mentioned a side effect 16 times (about 9 per 100 reports). The most common: drowsiness, agitation, qt prolongation. User reports show what people notice — they can't tell you whether Passionflower is safe for you.
Reported side effects
drowsiness8
agitation2
qt prolongation1
stimulation1
nausea1
emotional numbness1
brain fog1
sedating1
In their own words
“Some things didn't work at all for me: melatonin (tried 1mg-10mg), passionflower.”
“I've tried boosting GABA with Passion Flower, Valerian, L-Theanine, B-complex and more. No effect.”
“I've noticed this from many different supplements, including ashwagandha, bacopa, passion flower, even alcohol & phenibut.”
“I then tried raising GABA instead, using Valerian, Passion Flower, L-Theanine etc. All at max dosage, no effect whatsoever.”
“I then tried raising GABA using L-Theanine, GABA, Valerian, Passion Flower etc. No effect. None.”
“Man do I love that Passionflower in Vignatex. Makes me feel like a mellow jellow... From my personal experience it hits me pretty hard with drowsiness.”
Is Passionflower safe? What the research covers
BResearch: Moderate10 meta-analyses · 8 randomized trials on PubMed
None of the top reviews we found focus on safety. All research on Passionflower.