If you've been adventuring for even a short amount of time, you've probably racked up enough Rejuvination and Health potions to club a possessed rat to death. Well, if you play Ysuran, you should obtain his Alchemical Lore spell. Besides being very practical, changing potions from one type tp the other, it also has a very hidden use. A healing potion weighs half a rejuvination potion. If you've picked twenty rejuvination potions and you turn them all into healing potions, you've saved a respectable ten pounds.