Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) forbade treatment with a foul medicine; by this, he (peace and blessings be upon him) meant poison.

It is narrated from Sayyiduna Tariq bin Suwaid Hazrami (may Allah be pleased with him), he says: I said, "O Messenger of Allah! In our land there are grapes, we squeeze them (to make wine) and then drink it." The Prophet (peace and blessings be upon him) said: "No." I repeated my statement, and the Prophet (peace and blessings be upon him) said: "No." I said: "We seek cure for the sick through it." The Prophet (peace and blessings be upon him) said: "Indeed, it is not a cure, rather it is itself a disease."

Sayyiduna Wa'il bin Hujr (may Allah be pleased with him) narrates that I was present when a man from the tribe of Khath'am, whose name was Suwaid bin Tariq, asked the Noble Prophet (peace and blessings be upon him) about alcohol. The Prophet (peace and blessings be upon him) forbade him from it. He said: Can we use it as medicine? The Noble Prophet (peace and blessings be upon him) replied: It is itself a disease.

Sayyiduna Abdullah Rahman bin Uthman (may Allah be pleased with him) narrates that a physician mentioned a medicine to the Prophet Muhammad (peace and blessings be upon him) and said that a frog is also included in it. The Prophet Muhammad (peace and blessings be upon him) forbade killing the frog.