100mcg is usually a full dose. Usually micrososing is 1/10th of a typical full dose so 10mcg. Your tolerance is already quite high if you're at 64mcg/day and no

100mcg is usually a full dose. Usually micrososing is 1/10th of a typical full dose so 10mcg. Your tolerance is already quite high if you're at 64mcg/day and not actively feeling any tripping.