Pepperup Potion is a magical cure for the common cold, and reasonably effective at doing so.
It does, however, come with the side-effect that steam is emitted from the ears of those who take it for several hours after taking it. If muggles ever discovered it, it would be enormously popular among the mainstream for its curative effects, and among steampunks for its side effects.
It was first created by Glover Hipworth, although it is unclear whether he did so in the late 18th or early 18th centuries.
Related Drugs: Deflating Draught, Hair Raising Potion, Mandrake Restorative Draught, Polyjuice Potion, Skele-Gro & Swelling Solution.