Prayer potion

A  Prayer potion is a potion made with Herblore that restores  Prayer points (70 + 25% of total Prayer points) per dose. It appears as a  vial containing an aquamarine fluid. Below level 62 Prayer, this potion provides more Prayer restoration than  Super restore, although typically Super restores are used to restore other stats rather than simply Prayer, partially because they are significantly more expensive.

Prayer potions are almost always in high demand due largely to the common use of protection prayers and smiting as a defence in  combat. Having a way of restoring Prayer points in the middle of battle (and without the need of an altar) is very convenient

You can make a prayer potion at level 38  Herblore by adding a  clean ranarr to a  vial of water, and then mixing in  snape grass. This makes a potion with three doses, and grants 87.5  experience.