I am usually taking 5 - 6 grams of Vita c a day. I up it to 10,000 if I feel a cold coming on. The only thing I can tell from taking thyroid meds is my feet and hands are not like ice anymore. I still feel bad most of the time. Lately the neck and back pain are really bad. Almost screaming bad at times. I really can't tell if the cap is helping or not. I know my neck and shoulder pain has gotten worse since starting cap. I am swollen a lot more. I had the pophyria symtoms before cap. Fibro since 1995. I know I have multiple infections from 20 years of constant antibiotics for constant sinus infections. Many iv antibiotics for 6 and 8 weeks at a time. So probably fungal and bacterial loads of stuff. I am still on cap and will stay on it as long as the doc will let me in hopes of feeling better one day. It's been a year since I started.