Curcumin 95% causing diarrhea

I consumed Curcumin 95% from https://www.bulksupplements.com/ for over a year at 1 heaped tablespoon in fruit smoothie along with other supplements. It worked fine and I felt improvement over that time. One particular batch of Curcumin 95% lately caused severe stomach upset even at a much lower dosage of 1 level teaspoon. I had to discontinue its use altogether.

Then I tried another source of Curcumin 95% and it also causes the same problem at the lower dosage of 1 level teaspoon.

And then yet another source of Curcumin 95% causes the same problem at 1 level teaspoon.

Another member of my family who has only been consuming Curcumin 95% for only a couple of months is also having diarrhea from the Curcumin 95% from these 3 different sources. And He did not have any problem with previous batches from the 1st supplier mentioned in the first paragraph.

What is really going on? Is it that the previous batches were less pure? Or is it ought to be consumed in lesser dosage than I have been consuming? Or is it that the previous batches were good and pure and somehow all the three suppliers are selling defective produce? Tweet