Some folks need to be a bit careful with tumeric (curcumin). If one is on some blood pressure medications, it can magnify the effects of the prescription medicine. So blood pressure should be monitored if tumeric is added (or consult a physician or pharmacist.) It can also slow blood clotting, so it is even more important for those on anti-clotting medications or with clotting disorders to exercise extreme care.
So the idiot that says “its (sic) super safe” is grossly negligent. It can be beneficial to many people, but never trust the snake oil salesmen of the supplement world.
While not having any adverse effect on me in the spice (tumeric) form in recipes, the active ingredient curcumin, when taken in concentrated capsule form, gave me severe .. and I do mean SEVERE .. gastric and intestinal problems for a period of several days. Vomiting, intense headaches and light sensitivity, severe stomach and intestinal cramps, and violent diarrhea were the result of my taking curcumin capsules as directed. It took three days to get into my system and six days to get it out ...