I am taking 1.75 grains of Nature Throid and generally feel well . Just recently I've noticed my hair shedding more than usual and it feels weird not easy to style . I have purchased another blue horizon test to see what's going on . From my last test I posted my T4 was well down . When I took Levo it was always over range and I had joint pain . I'm feeling lots better but am obviously concerned about my hair . I don't have a low iron problem if anything my ferritin is usually a bit high . Thanks in advance and I will post results when I get them .