Antidote++(4)

Antidote++(4) is a members-only item on the OSRS Grand Exchange in the other category.

In-game examine text: "4 doses of super strong antipoison potion."

It has a Grand Exchange buy limit of 4,000 every four hours, a high alchemy value of 216 gp, and item ID 5952.

View on OSRS Wiki

Antidote++(4) shows an active flip setup with a margin of +105 gp and 134,968 trades over the last 24 hours.

At the buy limit of 4,000 every four hours, max profit per cycle is about 420.0k gp — high margin with healthy liquidity.