As a warrior you might not need to use mana potions to replenish mana unless you do some spellcasting. If you have the alchemy skill then mana potions can be mixed with haealth potions to create restoration potions which are superior to health potions -- they give you more healthas well as mana.

The question is not, Can they reason? nor, Can they talk? but, Can they suffer?
~Jeremy Bentham