Super antipoison potions cure poison and provide immunity to poison longer than antipoison, for approximately 5 minutes and 46 seconds. A superantipoison (1) can be found in the southernmost collapsed building north-east of the Observatory, near the entrance to the Observatory Dungeon with a respawn time of 55 seconds. Creating a Superantipoison potion from scratch in the Seers' Village/Catherby area is a task in the medium Kandarin Diary. It should be noted that Antidote++ cures poison, provides immunity to poison for 12 minutes, and is also the cheapest alternative.