I'm SO sorry it took me this long to get back to you. I talked to my friend last night and she said that in addition to the Pheno Barb she gave Bandit St. John's Wort and then also after awhile she started giving him Potassium Bromate with no dyes or preservatives (which I think she had to get from a holistic pharmacy) and that's less intrusive to the liver than the Pheno Barb.