Talk to Poe to get his nightmare dialogue option, talk to Talia about the Serum, take the right hand one, [sex scene], give one of the serums to Poe, quest finished.
It's really early game, just boot a new game and get to the quest, you can complete it alongside getting your 'Breder's License' (Yes, it's literally misspelled in the game... on purpose), just remember to take the Right Hand Vial. It's the lust one.
