Since the pain relievers also have anti-clotting effects, the. may experience muscle pain and other side effects from statin "overdose," because. Iron supplements can diminish the effects of levoxythyroxine (Synthroid), the .
. and difficulty maintaining muscle tone were side effects of medication, she said.. and feet, puffy face, muscle weakness and pain, impaired memory,. of both T3 and T4 thyroid hormones, where Synthroid replaces only T4.
If you're taking some drugs, it might cause some bad side effects.. raise the level of the drug in your bloodstream and increase the risk of side effects, especially leg pain.. Thyroid drugs such as levothyroxine (Levothroid, Levoxyl, Synthroid).