Sanfew serum(3)

Sanfew Serum(3) is a members-only item on the OSRS Grand Exchange in the potions category.

In-game examine text: "A 3 dose Sanfew Serum."

It has a Grand Exchange buy limit of 2,000 every four hours, a high alchemy value of 144 gp, and item ID 10927.

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Sanfew Serum(3) shows an active flip setup with a margin of +35.9k gp and 4,537 trades over the last 24 hours.

At the buy limit of 2,000 every four hours, max profit per cycle is about 71.72m gp — high margin with healthy liquidity.