In The Elder Scrolls IV: Oblivion, you can cure disease in several ways:

• Pray at a Chapel : Visiting any chapel and interacting with the Altar of the Nine will instantly cure all diseases for free. This is a quick and accessible method available throughout Cyrodiil

• Cast a Cure Disease Spell : You can purchase the Cure Disease Restoration spell from priests at various chapels, such as Trevaia at the Chapel of Dibella in Anvil or Uravasa Othrelas. Casting this spell removes all diseases immediately

• Drink a Potion of Cure Disease : Potions can be bought from alchemy shops like The Gilded Carafe in the Imperial City Market or crafted using ingredients such as Mandrake Root, Clannfear Claws, or Root Pulp. Consuming these potions cures all diseases

• Eat Ingredients with Cure Disease Effect : Certain ingredients found in the world, like Mandrake Root (found in ingredient shops or growing near Skingrad), can be eaten to cure disease without using Magicka or gold

Note that all diseases except Vampirism can be cured by these methods. Porphyric Hemophilia, the disease that causes Vampirism, can be cured within 72 hours of infection using these methods, but once full Vampirism develops, more complex cures are required

. In summary, to cure disease in Oblivion, you can:

• Pray at any chapel altar (free and instant)
• Cast the Cure Disease spell (purchased from priests)
• Drink Cure Disease potions (bought or crafted)
• Eat ingredients with the Cure Disease effect (like Mandrake Root)

These options provide flexibility depending on your situation and resources