I've been using the GTN ointment on my fissure in the morning, usually directly AFTER my morning BM, which I believe is supposed to prevent spasm.
But I've read somewhere that some people prefer to use it BEFORE the BM, to loosen the sphincter and make the BM easier.
Today I read about a guy who used it both before (about 5 mins) and immediately after every BM!
Any suggestions?

Hey there,
The nitro is actually to bring more blood to the area and relax the muscle. If you use it before a BM you might want to apply far enough before so it has a chance to be absorbed before you 'wipe' it away.
-Tanya

Thanks for the suggestion Tanya, I'll give it a try!

It can be used before and after (at the same time !!!!). However , you will need to put it at least 15 min before to see full effect . After BM you will wash and also soak (preferably) so the rest of the cream will be gone which means that you can re-apply it after soaking again.