I have been using Trimix for 3 1/2 yrs. and have used viagra with the shot several times. For me it didn't seem to make any difference except to give me the same headache I got when I tried Viagra shortly after my surgery. So, for me, I just save the money it would cost for Viagra and use the Trimix. Great results and no headache. Many others here use both with great results however, so like many other issues discussed here, it seems to be an individual thing. Like Paul, I'm suprised that your Dr. said not to use them together. You may want to check with another Dr. who is more knowledgable about
ED treatments.
Best of luck to you,
Allan