Extreme Ranging Potion is a potion made through Herblore skill. To make a Extreme Ranging Potion you must have an Herblore level of 92 or higher. This potion will boost your Ranged to 122 and is very helpful if you cannot buy Overloads. To make a extreme ranging potion you need to spawn a Ranging Potion (::item 169) and Grenwall Spikes (::item 12539) and use the grenwall spikes on the ranging potion.