However, I went to a French doctor when I did still have the sore throat and he prescribed amoxicillin in powder form (despite me telling him about the
biaxin xl I had previously been prescribed, which he wasn't familiar with because that is the commercial name), but also pointed out that i had a brown tongue due to a fungus and prescribed to me triflucan, an antifungal also in powder form. he attributed the brown tongue coating to the antibiotics that i had previously been taking.