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For the vial version, see Overload potion.

Overload flask detail.png

An overload flask is a potion flask originally containing six doses of Overload. It is created by using overload on a potion flask. Each dose of Overload will improve your combat stats.

Overloads boost Attack, Strength, Defence, Ranged, and Magic + 15% of the stat level + 3 (a maximum of +17 at level 99) for 6 minutes. Overloads reapply the boosts every 15 seconds, resulting in minimal boost decay - however, once the overload wears off, the boosts are completely removed. Upon death, the effect of overload will also wear off entirely before the 6 minutes is up.

The flask is made by blowing robust glass, requiring 89 Crafting and giving 100 experience. Red sandstone can be mined at Oo'glog and smelted using the robust glass machine also located at Oo'glog.

To decant the potion into the flask, one must have at least 6 doses of overload in their inventory, as well as one or more potion flasks. Using the flask on the potion will open a menu to decant them. The optimal inventory setup for decanting potions is 17 4-dose potions and 11 flasks.

After all six doses have been consumed, the flask will shatter and disappear.

Assuming that the potion flask, all 3-dose super potions and secondary ingredients for extreme potions are bought on the Grand Exchange and a scroll of cleansing has not been used, each overload flask costs 188,144 coins. This amounts to about 31,357 coins per dose, 376,288 coins per hour, or 138 coins per second of effect.

Once the potion has been partially drunk, no more doses can be added to it. After all 6 doses have been consumed, the flask will shatter and disappear. Flasks can be combined together, but the empty flasks will still be destroyed afterwards.

Drop sources

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Source Combat level Quantity Rarity


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