Relaxation: The theory w/ anal fissures is that it is due to spasms of the anal sphincter so that when you have a bm, it tears the canal (like pooping shards of glass). The nitro is meant to relax the sphincters.
Answered 1/29/2016
4.9k views
Relaxes the muscle: Relaxing the internal anal sphincter muscle may allow the fissure to heal. Nitroglycerin is a smooth muscle relaxant.
Answered 1/29/2016
4.9k views
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A doctor has provided 1 answer
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