Are these all separate or in one supplement?
A certain hated poster said BPC "cured" his stomach problems. I would worry that the caps don't contain the ccompound it the right quantity. I would buy third party tested freeze dried product, then reconstitute the "puck" and squirt in empty gel caps just before taking it

Probably wouldn't hurt to try, it's in gastric juices naturally anyway.
Krankenstein, with MK you at least know if it's real due to the sides. Can't be sure of any supps, one third party testing company says only Thorne has ever passed all quality controls, but naturally they are very expensive.
So1me of the peptide companies offer third party tested product. Some assurance at least although you could fudge that too. Actually many steroid/gh labs offer this as well now. One lab director says most GH on the market is 96-98% pure and by pharma standards it has to be just 94% pure. The amps are often just unmarked, no labels or whatever, different colored caps is all lol.