Creatine side effects
Across 2,279 first-hand reports, people mentioned a side effect 293 times (about 13 per 100 reports). The most common: stomach issues, hair loss, insomnia. User reports show what people notice — they can't tell you whether Creatine is safe for you.
Reported side effects
stomach issues76
hair loss74
insomnia64
water retention41
diarrhea18
anxiety11
sleep disruption5
dehydration4
What got worse for some people
In their own words
“I actually feel a lot better. Mentally clearer and more balanced, like I have my brain back.”
“Turns out, creatine is the sleep aid I've been hunting for ages.”
“10g and I feel good, 15-20g and POW! Your head explodes. At 20g I feel euphoria and a sense of clarity and wellbeing.”
“It puts me in a great mood. I feel more socially confident on it. But I get heavy memory loss on it at any dose. I tried the 20mg dose recommended for cognition. Major memory issues.”
“I started taking creatine, and this thing completely transformed me. I was able to lift 2 to 3x more weight in the gym with more stamina within 3 weeks, my muscles looks fuller, I gained weight.”
“I just started taking Creatine (3g) a week ago and can't believe how much better I feel already...My memory and recollection has switched on.”
Is Creatine safe? What the research covers
AResearch: Strong763 meta-analyses · 2,794 randomized trials on PubMed
None of the top reviews we found focus on safety. All research on Creatine.