Thanks for the link for the posts by BGAN, I'm getting hopeful after reading his success story! I think PBD is my next choice in case the healing doesn't happen until next month.
Here you have a link to Hirslanden Hospital in Zurich, Switzerland about fissure treatments:
https://www.hirslanden.ch/content/globa ... S10-12.pdfSorry, but the text is in German. But you can easily copy the text to Google Translate to get it in English.
They write there that they do LIS nowadays only in very rare cases and generally is not recommended.
They also mention Gonyautoxine
there. Apparently it has a healing rate of astonishing 100% (according to one study).
I currently seem to be slowly healing. So I will give it another month or so and in case I still have my fissure I probably will make an appointment at Hirslanden hospital since they seem to have a lot of experience with treating chronic fissures.