It is lawful provided it is safe and can be taken with decency
Fatwa No: 86572

Question

I would like to know is it Haram to take pills to enlarge a male organ and also the breast of woman sorry about telling you know that the size of that male organ is about 6 cm.

Answer

Praise be to Allah, the Lord of the Worlds; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions. In case these pills do not have serious effects, then there is no harm in taking them, provided that this is not done by exposing the Awrah (parts of body that must not be exposed) to the doctor. See Fatwa: 82093. Allah knows best.

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