Use remedies
Ibrahim, on him be peace, in the Qur'an: and when I am ill, it is He who cures me. Cure is from Allah. The means are means, and the verse does not treat them as a rival.
Then the reports. In Bukhari, no disease has been created without its treatment also being created. In Muslim, there is a remedy for every malady, and when the remedy is applied the illness is cured by the permission of Allah.
Qur’an and Sunnah
وَإِذَا مَرِضۡتُ فَهُوَ يَشۡفِينِ
He who cures me when I am ill
Qur’an 26:80
Narrated Abu Huraira:The Prophet (ﷺ) said, "There is no disease that Allah has created, except that He also has created its treatment
Sahih al-Bukhari 5678graded sound, sahihaynfull report
Jabir reported Allah's Messenger (ﷺ) as saying:There is a remedy for every malady, and when the remedy is applied to the disease it is cured with the permission of Allah, the Exalted and Glorious
Sahih Muslim 2204graded sound, sahihaynfull report
Translation: M.A.S. Abdel Haleem, The Qur'an, Oxford University Press, 2004.