First: It is impermissible to
put a living animal in boiling liquid, as it entails causing torture of animals which is prohibited by the Prophet (peace be upon him) who said,
When you kill, kill in a good way.
Second: It is impermissible to use snakes or the fat cooked with it in treatment. According to the preponderant view, eating the flesh of snakes is impermissible and the flesh of a dead snake is considered Najis (ritually impure). Therefore, using the forbidden things in treatment is Haram (prohibited).May Allah grant us success. May peace and blessings of Allah be upon our Prophet Muhammad, his family and Companions!