A Potion of Zamorak is a potion that can be made with the herblaw skill. It requires level 78 herblaw to make and gives 175 Herblaw experience. It can be consumed to temporarily boost a players stats. Using a Potion of Zamorak in a duel without informing the opposing fighter (usually called Zammy or Zammying) is considered deceptive and is generally discouraged.
To make a Potion of Zamorak, you first add a Torstol herb to a vial of water, creating an unfinished potion. You then mix Jangerberries with the unfinished potion to make the Potion of Zamorak. As with most potions, you initially make 3 doses of the potion and the doses decrease as you drink them.
When consumed, the players Attack level increases by 22.5%, Strength level by 15% and players Defense level decreases by 12.5% and Hits by 10%.
*To obtain the potion's full power you only need to drink the last dose instead of all 3. This keeps you losing more HP and if used for staking purposes there is a higher chance of this not being detected by another player. This is considered a deceptive and dishonorable tactic, especially if dueling an inexperienced player for a stake.