Rav's warning against the use of drug-medicine, as it is addictive: Pesachim 113a
As a general rule, medications have negative side-effects: Eruvin 54a
There is no medicine, barring Moist Ginger, Long Peppers, Bread from Well-Sifted Flour, Fat Meat and Aged Wine, which does not have a negative side-effect: Pesachim 42b
Long lists of Medications: Shabbat 108b-111b; Yoma 84a
List of medications for premature and underdeveloped infants: Shabbat 134a
The halachic credibility of self-diagnosis: Yoma 83a
Not walking immediately after eating, drinking, blood-letting, sleeping or intercourse: Shabbat 129a
Use of potions to restore reproductive ability in old age: Shabbat 111a
Hot liquids and warm bread after Shabbat are medicinal: Shabbat 119b
Selling one's shelter to obtain shoes: Shabbat 129a
Diseases are generally weaker in the morning, and stronger in the evening: Nedarim 40a
Gd "feeds" sick people, maintaining their health, and his Manifestation is there: Nedarim 40a
Gd granting a cure to the sick is a miracle greater than that which saved Chananiah, Mishael and Azaryah from the furnace: Nedarim 41a
Book of Medicines
Hidden (See Rashi "Nignaz" Pesachim 62b) by Chizkiyahu: Berachot 10b, Pesachim 56a