A doctor on the Citadel needs a new medi-gel formula created specifically for aliens. Find a new formula and deliver it to her at the Huerta Memorial Hospital.

Alternative journal entry:
A new medi-gel formula has been recovered from Sanctum. Find someone on the Citadel who can use it.

Acquisition

Listen to a doctor at the Huerta Memorial Hospital on the Citadel. The doctor is standing on the left as you exit the elevator.

Alternatively, you can acquire the mission without overhearing the doctor first by finding the formula in N7: Cerberus Lab. This second way of acquisition is possible even before the finishing the mission Priority: Palaven

Walkthrough

Note: This mission must be completed before completing Priority: Tuchanka as it will be the last opportunity for the player to visit the Citadel before Priority: The Citadel II, after which it will no longer be available.

During the mission N7: Cerberus Lab, access a console to reveal a "failed" Cerberus experiment. While it produces a breakthrough for hanar, it won't do anything for humans. After completing the mission, head back to the hospital and hand the formula over to Dr. Ravin.

If you miss the hanar medi-gel formula during the mission, it will be available for purchase at the Spectre Requisitions terminal in the Citadel Embassies.

Completing this mission gives you 30 experience, 1,000 credits and updates the Hanar and Drell Forces War Asset.