How can I reduce the ASO level my level are 600and it s being high for close to 1 yr, I already had 3 monthly penicillin injections but it had no effect, still in the 600, 8 I constantly have headaches, extreme fatigue, and occasional low grade fever, I ve been tested for everything and everything it s on normal range I m a female 42 yr old, I suffer from hypothyroidism ( but t3, t4 levels are normal)