- "The antidote for a blended poison will be equal to more than the sum of the antidotes for each of the separate components."
- —Golpalott's Third Law[src]
This law dictates the protocol for making antidotes for all poisons. Creating an antidote following this law may be quite difficult--in the Potions class during which Professor Slughorn asked the class to make antidotes according to Golpalott's Third Law, Hermione Granger made an only half-finished antidote that included fifty-two ingredients, one of them being a chunk of her own hair.
At Hogwarts, the Sixth years learn to produce antidotes referring to this law, under the instructions of their Potions Master, Horace Slughorn. In the 1996–1997 school year, Hermione Granger "recited this law at top speed," upon being asked about it by the Potions Master, Professor Slughorn. While the entire class had trouble with concocting the antidote for the practical portion, Harry Potter daringly used a bezoar as his work, gaining praise from Slughorn.
Behind the scenes
- The existence of this law relates to the concept of synergy, or the idea that a whole product is greater than the sum of its parts. In particular, it brings to mind drug synergy; the combined effect of multiple drugs taken simultaneously is often greater than the effects of taking those same drugs separately.
- The name of the law suggests that there is probably a Golpalott's First Law and Second Law, much like how the existence of Newton's third law implies the existence of the first two.
- This may be derived from Newton's Three Laws of Motion (but not actually), the most famous being Newton's Third Law.
- Harry Potter and the Half-Blood Prince (First appearance)
- Harry Potter and the Deathly Hallows (Mentioned only)