Strength potion

is a potion made by using a ground bear paw on a vial of morrithol, requiring 12 Herblore, yielding an 3 doses and 52 Herblore experience. 
A dose of strength potion provides a temporary skill boost to strength equal to 3 + 10% of the player's current strength level, rounded down. The effect will diminish over time until it expires completely after approximately 10 minutes.