Potion of Frost Giant Strength

Potion, minor, rare

When you drink this potion, your Strength score changes to 23 for 1 hour. The potion has no effect on you if your Strength is equal to or greater than that score.

This potion’s transparent liquid has floating in it a sliver of fingernail from a frost giant.

Source: Dungeon Master’s Guide p. 187. Available in the SRD