Total BS, not placebo, I don't take shit if it doesn't have an impact that I can notice.
I've been thru this before, studies this, studies that, you know, just try it, if it doesn't work for you don't continue. I just put my locksmith onto it today, he came around with his hand all swollen up, said he felt something go snap in it yesterday. I gave him 3 with a glass of milk and 20 minutes later he was already noticing improvement. Apparently it works by blocking the the inflammatory chemicals the body sends to an injury, but I'm just an electrical engineer so don't take anything I say about biochemistry seriously.
Brand I like is Bioglan, double strength. I have put maybe 30 people onto it that have all had positive effects.
A few years ago we went to Ulawatu in Bali and the chalet owner there was an old American guy Rob who had a disk injury from surfing years ago that flared up now and then and he was on some serious prescription anti-inflammatories, but they rendered him with serious cognitive difficulties. We have him some Curcumin and he said within the hour he could feel the pressure come off. When we left a few days later his Balinese wife was literally prostrate on the ground clutching feet and weeping with tears of thanks and appreciation. So if that's placebo, I'll take it anyway, but it's not.
Sick of armchair experts that read a bunch of poorly execute studies and start spouting off claims, but never actually try it. The chances of harm are very low , and you might be surprised how effective it is because my experience, and that of many others, is that it beats anything prescription, for certain injuries, hands f$cking down.
Placebo my arse.