Topical or Intramuscularly - Which is most effective at entering bloodstream?

MMS and any other solution, and DMSO, I find very difficult to take orally. Because of that, I prefer topically or intramuscularly (IM). Which is most effective at getting the solution into the bloodstream, assuming the bloodstream is where it ideally should be? And are there any protocols or suggestions that I could read regarding IM? I am dealing with bladder cancer btw.