Ok so I was able to find some information about Methylene blue dosage, but it is a little confusing to me.. Ill have to look more for the side effects.
This is straight from the text: Amphibian Medicine and Captive Husbandry By: Brent R. Whitaker, Kevin N. Wright
Drug..
Dosage..
Comments
Methylene blue..
50mg/ml as 10 second dip..
Saprolegniasis, Tadpoles should not exceed 2 mg/ml
Methylene blue..
4mg/l as continuous bath..
Saprolegniasis
Methylene blue..
3mg/l as continuous bath 5 days max..
Saprolegniasis
Methylene blue..
2mg/l as continuous bath..
External protozoans
Let me know if this doesn't make any sense (the formatting gets messed up when I submit)and I will just send you a photocopy of the page I got the info from.