Potion of Healing

You regain HP when you drink this potion.
The amount of HP is shown below. Whatever the rarity, the red liquid glimmers when agitated.
Healing (Common) 2d4+2 HP
Greater healing (Uncommon) 4d4+4 HP
Superior healing (Rare) 8d4+8 HP
Supreme healing (Very rare) 10d4+20 HP