Hi. I started Levo 6 months and After 3 weeks started having muscular pains and stiffness. Every time the dose is increased, the pain in my heals, Achilles, calf and knee has increases. (Also muscle pains in my forearms) It's so painful now, I've decided to self medicate. I've ordered Thyroid S. Has anyone had a good experience on this compared to levothyroxine?