While raiding a Cerberus base, I came across a medi-gel formula that they ignored because it doesn't help humans. My mission log tells me someone on the Citadel will be interested, so when the mission was over I flew right back and ran around the Citadel looking for the interested party, even triple-checking the Hospital, and can't find anyone who wants it.
Who do I give the alien medi-gel formula to?