What herbal medicine can be taken in place of femara (letrozole) for cancer treatment?

Forgive my frankness: If you actually have cancer, then you deserve to have the most effective treatment made available to you. Your physician is under super-strict obligation by the law to tell you the truth, while supplement / "herbal" websites are for the most part deliberately created to deceive you. If you respect your own body or care about those who love you, make your decision on accurate information.

None: They're all a waste of money. None will do you any good, certainly can't do anything like your prescription medication could. Don't get your medical information from friends, tv or the internet.