Prophetic Medicine?

The Prophet was sent to teach us RELIGION, and NOT Medicine, Science, Maths, Biology, Astronomy, etc.

Ibn Khaldun wrote 650 years ago:

والطب المنقول في الشرعيات من هذا القبيل، وليس من الوحي في شىءوإنما هوأمر كان عادياً للعرب
فإنه صلى الله عليه وسلم إنما بعث ليعلمنا الشرائع، ولم يبعث لتعريف الطب ولا غيره من العاديات
وقد وقع له في شأن تلقيح النخل ما وقع، فقال: ” أنتم أعلم بأموردنياكم . فلا ينبغي أن يحمل شيء من الذي وقع من الطب الذي وقع في الأحاديث الصحيحة المنقولة على أنه مشروع

“The medicine mentioned in the religious tradition are part of what was customary among the Arabs, it is in no way part of the divine revelation.
Indeed, the Prophet Muhammad was sent to teach us the religious law (Shariah), and not to teach us medicine and other ordinary matters.
In fact, there occurred concerning the matter of grafting date-palms and he (the Prophet) said, “You are most knowing of your worldly affairs.”
So, none of the statements concerning medicine that occur in sound traditions should be considered as (having the force of) law.”

[“Muqadimah Ibn Khaldun”, 1/301].

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The medicine which they relied on was only what was available in their times.
It does not mean that we have to push those ancient medical practices until the Day of Judgement.
It also does not mean that those medical practises were religiously prescribed to us.
Worldly affairs are left to the people.
The main goal of the Prophets is our salvation in hereafter.