It’s pretty risky to do caps from what I understand but I haven’t been following the legal policies around this topic. Can you not do liquid or something?
I can’t speak for sarms or serms but I have experience with similar liquid peptides. I get horrible crippling heartburn the second they make contact with the throat. Not sure why but this is from multiple different compounds that do this. Cough medicine will do this too me if it’s bitter enough