never really heard of this before....
but came across this during my trip to texas and this is what they offer people in mexico in the aid to cure anal fissures.
i did google this and there apparently is a 90% cure rate in some clinical trials for anal fissures but for some reason i have never heard of this drug before. i can't find it prescribed here in the US but it is also good for other stuff.
primarily, it aids in wound healing. it is also used on animals.
feel free to google, here is an example:
https://www.icomstec.com/savings/store/src/store.php?prog=products&a=preview&id=1277&cat=93&in_template=1&nocache=JQG1276833096SGMMER2010/06171276833096&idioma=ENG