can pain meds cause ALT enzymes in the liver to elevate?

Answer 1

YES: NSAIDs (Non-Steroid Anti-imflammatory drugs) can cause ALT levels to rise. It is the reason for constant review of the effects of NSAIDs such as Naprosyn/Anaprox/Alleve et al on liver function in humans.

Doctors request Liver function tests in order to determine how the liver is working. This involves the level s at which enzymes appear in the liver. ALT ((Alanine aminotransferase, a specific enzyme found in in the liver) levels have a normal range of U/L (5 to 45)

An except from http://www.liverdoctor.com/

Liver Enzymes
• ALT - (alanine aminotransferase) - was previously called SGPT is more specific for liver damage. The ALT is an enzyme that is produced in the liver cells (hepatocytes) therefore it is more specific for liver disease than some of the other enzymes . It is generally increased in situations where there is damage to the liver cell membranes. All types of liver inflammation can cause raised ALT. Liver inflammation can be caused by fatty infiltration (see fatty liver) some drugs/medications, alcohol, liver and bile duct disease.

Answer 2

Yes, and so can hepatitis C. You may want to get tested. It often has no symptoms for decades, but the first signs are usually elevated liver enzymes.
Good luck.