The farts. Good God the protein farts. No matter what kind I use. Brand, type, vegan, non-vegan, etc. Those damn protein shake farts can kill. The are the most unnatural smelling abominations the human body can produce. There are a number or reasons to not use protein powder supplements if you can avoid it. Actual health concerns. Yet in the end, it is the farts that stop me from using them.
For me it’s mostly that it makes me feel bloated whenever I drink it. I recently got Creatine (5000mg per serving is best) with BioPerine(bioavailability agent)