Avoid

A Doctor’s Guide to Herbs, by Dr. Isadore Rosenfeld, May 31, 1998, Parade Magazine
Dr. Rosenfeld’s latest book is Dr. Rosenfeld’s Guide to Alternative Medicine

Some herbs to avoid: Comfrey, Chaparral, Jin Bu Huan, germander, Pennyroyal, and Pokeroot all can hurt the liver. Ephedra (ma huang) can raise heart rate and blood pressure.