You can find the following objects in diablo. Their effects are explained below. You already start the game with two potions of healing. You cannot rise a character's base value up when it's already at the character's maximum.

Potion Name Effect
Potion of healing Brings partial healing for your character
Potion of full healing Brings full healing to your character
Potion of mana Refills your character's mana up partial
Potion of full mana Refills your character's mana
Elixir of strength Adds 1 point to your character's strength base value
Elixir of magic Adds 1 point to your character's magic base value
Elixir of dexterity Adds 1 point to your character's dexterity base value
Elixir of vitality Adds 1 point to your character's vitality base value