It is narrated from Sayyidah Umm al-Darda' (may Allah be pleased with her) that the Prophet (peace and blessings be upon him) said: "Indeed, Allah Almighty created both disease and cure, so seek treatment, but do not seek treatment with what is unlawful."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21019