The boosts for Melee skills and Range all depend on your Base Level. All calculations are rounded down.
|Skill||Boost Formula||Max Boosted Level|
|Attack||( 1.22 • Base Level ) + 5||125|
|Strength||( 1.22 • Base Level ) + 5||125|
|Defence||( 1.22 • Base Level ) + 5||125|
|Range||( 1.20 • Base Level ) + 4||122|
|Magic||Base Level + 7||106|
It is not possible to drink an Overload potion while below 50 HP. However, if a player drinks an overload potion and immediately lowers themselves to 50 HP or below before the first hit of damage is applied then the player will die from the overload hits if they do not heal. When the overload runs out the 50 HP that was lost is then restored.
The boost is reapplied every 15 seconds for 5 minutes. It is a popular misconception that overloads will fully restore a player's stats every 15 seconds. This is untrue, as overloads simply reapply every 15 seconds. This property is useful to players who are using Saradomin brews to restore hitpoints, as the overload's frequent boosts help to counter the Saradomin brews' stat drain. After the five minutes is up, the overload's stat boosts will wear off and the players level set back to their actual level rather than progressively decaying like most boosts do, while also restoring 50HP as mentioned previously.
Overloads require level 99 Herblore to mix. They are made by combining a Torstol herb with one of each of the Extreme potions.
|Extreme Attack (4)|
|Extreme Strength (4)|
|Extreme Defence (4)|
|Extreme Ranging (4)|
|Extreme Magic (4)|