Since i have been on levothyroxine for 8 month i have felt like my heart is going to give out and had it checked and hair is thinning big time my neck has been swollen 2 times it size and hard to swallow .it also has made my legs and feet hurt almost to point of feeling swollen and unable to walk feel worse than ever always have some kinda problem needing dr. attention since started Sandoz Levothyroxine