Potions that recover the base stats that are often expended during combat, healing potions recover lost hit points, magicka potions recover spent spell slots and stamina potions recover spent movement in a turn. Each of these types of base potions have four versions and the ingredients from a rarer version can be used to create more common versions of the potion, however not the reverse. The rarity of the potion will always match the version of the most common version ingredient.