Is it permissible for a Muslim to drink his own urine for medicinal purposes, despite its impurity, if he cannot find any other curative treatment?

Human urine is impure by scholarly consensus, and a Muslim must avoid it. It is not permissible to drink it for medicinal purposes unless it is the only means available, based on the recommendation of a trustworthy Muslim physician. This is because treating illness with impure substances is permissible when no pure alternative is available.