Across 544 first-hand reports, people mentioned a side effect 11 times (about 2 per 100 reports). The most common: vivid dreams, headache, nausea. User reports show what people notice — they can't tell you whether Curcumin is safe for you.
“I recently stopped taking Curcumin because of its affect on DHT and I was looking for an alternative measure to deal with inflammation as I feel it really helped with anxiety/depression.”
“I find curcumin works just as well, if not better, than ibuprofen... I have sometimes experienced a little but of GI discomfort from taking it (gas, stomach pain)”
“I'm not sure if it helps my inflammation or not, but it gives me some of the wildest, most vivid nightmares and dreams I've ever experienced.”
“I had to reduce the Omega 3 and Curcumin to one every other day because the energy levels went too high and couldn’t sleep at night.”
“I've tried several different curcumin products over the years after hearing about it's wonderful qualities, but never noticed anything from a single one of them.”
“I find curcumin is the only supplement I've actually noticed a real response wen it comes to lowering inflammation I mean it's pretty drastic.”
Conclusion: Curcumin and Curcuma longa Extract may improve symptoms and inflammation levels in people with arthritis. However, due to the low quality and small quantity of RCTs, the conclusions need to be interpreted carefully.