Methylene Blue (MB) - Your experiences

I have recently hit my 22nd anniversary of my MS diagnosis and am always on the lookout for non-pharmaceutical treatments. In addition to adopting a Keto diet (which seems to help with my bowel and bladder issues, in particular, do any of you use MB? If so, haw long have you been using it and what effects have you seen? I am currently on 60mg a day.