The ruling on drinking blood for treatment

Question:
And, Shaykh, it is what Allah has decreed.

Answer:
It is not permissible to drink blood, and treatment is not done by drinking. Treatment is done by a medical method, by a medical method through the judgment of the medical authority. Drinking is not a treatment. Some of the common people and some of the folk doctors who say, "Apply the blood of a companion and blood of I don't know what, and give it to drink to the one who has such and such an illness," this is wrong.
There is no basis for it, and it is not permissible, because blood is a physical substance, and it is not permissible to treat illness with physical substances. However, providing blood to a patient as emergency aid is a case of dire necessity. The default ruling is that it is not permissible, but this is an exception due to dire necessity, based on the saying of Allah the Exalted: “It is made lawful to you… the dead animal, blood, and the like,” up to His saying: “except what you are compelled to eat.”