Regarding liver tests, I had a similar experience a few years ago. I saw an MD who works with herbs and he prescribed 400 mg SAM-e twice daily, along with a few other herbs/nutrients (incl. 5-HTP). After a couple weeks (in which I did not seem to experience a benefit with sleep), liver enzymes AST and ALT became elevated, and he suspected that either SAM-e or 5-HTP had caused it. He then told me to stop taking the herbs, tested me again a few weeks later (in which the enzymes had returned to normal), and in a roundabout way told me he didn’t know what else to do.

Note: This was just my experience and doesn’t mean these nutrients will affect anyone else in the same way.