If you're talking about BPC 157, yes, you can take that. Very expensive, effective in recovering muscle tissues, but your body will prioritize the resources. For example, your body will have strains, micro tears, damages from environmental-physical-chemical factors, and many other things going at the same time. You also invoke micro tears for the penis. In the entire scheme of things, your main body will prioritize everything, and your penis is the last thing on the list. Taking the oral route, all major vital functions and repairs come first. By the time your penis signals for a part of the resources, it may only get a tiny portion, probably around 1%. To make use of the 90%, some of the brothers inject the solution directly into their penis. That works for a few, not for the rest.
So, oral route, 1% to 5% effectiveness, if any at all. Direct injection, 85% to 95% effectiveness, again, for some, not all.