L-Tryptophan side effects
Across 238 first-hand reports, people mentioned a side effect 14 times (about 6 per 100 reports). The most common: drowsiness, vivid dreams, death. User reports show what people notice — they can't tell you whether L-Tryptophan is safe for you.
Reported side effects
drowsiness5
vivid dreams3
death1
anxiety1
increased appetite1
pulmonary hypertension1
dizziness1
blurry vision1
In their own words
“No need for tyrosine and tryptophan if you have basically any protein in your diet. They are only useful if you are on a fast. I have taken both and they do nothing apart from wasting money.”
“L-tryptophan has been a game changer for my seasonal depression... Whenever I start to get that feeling of 'what's the point' I pop 2 of ND's L-tryptophan and feel so much better.”
“I've felt like I'm on a microdose of LSD that's slightly too large lol. I feel that unique uncomfortable feeling where my atoms feel like they're vibrating a bit too quickly.”
“I would also try L-tryptophan as well...L-tryptophan? 30min before bed on an empty stomach...gets me to sleep and usually aids in vivid dreaming.”
“I took L-Tryptophan in the past and that stuff made me feel really groggy in the morning.”
“Came home, took 2gms of l-tryptophan with this adaptogenic blend... HOLY COW. OMG I feel good.”
Is L-Tryptophan safe? What the research covers
AResearch: Strong18 meta-analyses · 117 randomized trials on PubMed
None of the top reviews we found focus on safety. All research on L-Tryptophan.