F-Phenibut side effects
Across 19 first-hand reports, people mentioned a side effect 5 times (about 26 per 100 reports). The most common: urination increased, psychosis, hallucinations. User reports show what people notice — they can't tell you whether F-Phenibut is safe for you.
Reported side effects
urination increased1
psychosis1
hallucinations1
paranoid delusions1
tolerance1
In their own words
“F-Phenibut seems to take effect very quickly (within 5 - 10 minutes)...I felt a tingling sensation in my scalp, and a feeling of calmness/contentedness come over me.”
“I only tried f-phenibut since phenibut is illegal in my country. I won't do it, but small doses of kratom or opioids could give me a motivation boost. f-phenibut hcl even at 1g did nothing to me.”
“I was taking higher dosages and using f-phenibut as well but I only used for a total of 3 months or so. My withdrawal started with psychosis, hallucinations, paranoid delusions”
Is F-Phenibut safe? What the research covers
DResearch: None0 meta-analyses · 0 randomized trials on PubMed
None of the top reviews we found focus on safety. All research on F-Phenibut.