Strattera and Elevated AST

I started Strattera for ADHD in Dec 09 - after stablizing dosage at almost 3 months, doctor started blood work since it can cause liver damage. AST was 69 while all other enzymes were normal. (ALT 13) I normally drink about a glass of red wine per night but not every night - so I cut back on alcohol - though did not cut out completely - and don't take tylenol - but take a lot of Benadryl & decongestants for bad allergies with occasional ibuprofen for sinus headache. 5 weeks later, AST was 124 - stopped the Strattera and repeated blood work 1 week later (4/14/10) - AST 169 and ALT 41.  I have cut out alcohol, caffeine, fats, fast food, allergy meds, no ibuprofen since last blood work on 14th - how long should I wait to repeat? And could this be from the Strattera? Thank you.