The Bottomless Overload is a bottomless version of the Overload potion. The Bottomless Overload boosts all the player's combat stats by 5 + (level * 0.15), while damaging them for 50 hitpoints.
This damage is applied in hits of 10 over a few ticks. The stat boost is re-applied every 15 seconds for five minutes until the effects wear off, at which point the player is healed back 50 hitpoints. The Bottomless Overload is tradeable.