I would think that orals would be more prone to causing stomach problems but what about injectables?
I have ulcerative colitus and haven't had too much of a problem with most supplements. Im on week 5 of a test cyp/EQ cycle and Im just starting to have stomach problems(gas and diarrhea). Although, it could be from diet, stress or another unknown source. I have 1-2 flareups a year.