It can be made by a player with 69 Herblore by mixing clean lantadyme and then dragon scale dust in a vial of water, which grants 157.5 Herblore experience. Players will get a warning in their chatbox when the potion is about to wear off after approximately 5 minutes, 45 seconds: "Your antifire potion is about to expire." Then they will get another message when it has worn off, approximately 6 minutes in total: "Your antifire potion has expired." This allows you to keep track of how long you have until you have to drink again.