? Adenosyl alternative?

[pevsfreedom]

Luna's liver #'s haven't been too hot recently and we were given Adenosyl, which has helped. Problem is, it's pretty expensive on top of everything else at $35/month. Is there any cheaper alternatives? Can I just use milk thistle?

 

[BJM]

You can check the ingredients and see if you can find them less expensively, or generically with Google.