Hi, thanks for asking in Healthcare Magic.
Myopathy or muscle tenderness is a side effect of Statins. Compared to Simvastatin
the incidence of myopathy is less with Pravastatin
. The symptoms of myalgia present as intense muscle pain
You have not mentioned the details of blood test
. You should have tested your serum creatin kinase (CK) and liver enzymes like AST and ALT. Simvastatin increases the serum creatin kinase (CK) levels in case of myopathy. If serum CK values are 10 times higher than the upper normal limit, then the myalgia is attributed is to statins.
Statins also result in liver damage
. although uncommon in the dosage you are taking. It is better to measure the serum values of ASTand ALT every 3 to six months. You should discontinue Simvastayin if both CK and liver enzymes are elevated. Otherwise, if only CK is elevated, then you can substitute Pravastatin instead of Simvastatin.
I hope this is useful to you.