Selling and using medicines that contain a prohibited substance

Q 6: What is the ruling on selling and using medications which contain substances extracted from cows, oxen, or pigs? It is worth mentioning that in the case where these substances were extracted from cows, we do not know whether they were slaughtered Islamically or not. There are some medications that contain ox and cow blood; is it permissible to sell and use these medications?

A: It is not permissible to use these medications which contain substances extracted from oxen and cows that were not slaughtered according to the Shari`ah. The same applies to the medications which contain substances extracted from pigs and those which contain blood.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.