Extreme Strength Potion is a potion made through the Herblore skill. To make an Extreme Strength Potion you must have an Herblore level of 89 or higher. This potion will boost your strength to 125 and is very helpful if you cannot buy Overloads. To make a extreme strength potion you need to spawn a super strength potion (::item 157) and Clean Dwarf Weed (::item 267) and use the clean dwarf weed on the super strength potion.