Islam encourages Muslims to seek cures for their ills. The hadith of the Prophet (peace and blessings be upon him) reads: “Seek medication, o servants of Allah, for Allah never created an illness without creating a cure for it.” At the same time, a Muslim is always commanded to seek medications that are derived from lawful origins.
There is evidence from Islamic sources that killing frogs is not permissible. It has also been proven that they are not to be used for medication. Ibn `Umar is reported as having said: “Do not kill frogs, for their croaking is an act of glorifying Allah.”
The following is a fatwa from the prominent Muslim scholar Dr. `Abdel-Fattaah Idrees, professor of Comparative Jurisprudence at Al-Azhar University, in this regard:
“It is not permissible to use frogs for medication because the Prophet (peace and blessings be upon him) has forbidden using them for this purpose. Suwaid ibn Ghaflah asked the Prophet (peace and blessings be upon him) if it is permissible to use frogs to produce medication and he (peace and blessings be upon him) forbade him from doing so. He even forbade him from killing them.
There is evidence that it is not permissible to use things that have been declared forbidden when producing medication. In a hadith, the Prophet (peace and blessings be upon him) is reported as having said: “Almighty Allah made not the medication of my people in things which were declared forbidden for them.”“