I see you listed beta alanine in the list of supplements that have evidence support their use (along with protein powder, creatine and caffeine). Why is that?
I also remember a post in this forum talking about citrullin malat and its benefits for muscle protein synthesis. This one is not listed there.
I think beta alanine does have evidence supporting its use. I think citrulline malate is probably useful too, but the supplement section within the PDF is not exhaustive and I refer people to ISSN review for a current peak at where the science is now.