Preparation H is a brand of medications made by Pfizer, used in the treatment of hemorrhoids. The company that makes this product incorporated in 1926 as American Home Products and "one of AHP's earliest prizes was the acquisition of a sunburn oil in 1935 that the company transformed into Preparation H, which became one of the world's best-selling hemorrhoid treatments. " AHP changed its name to Wyeth in 2002, and was then bought by Pfizer in 2009, which was reported to have paid $68 billion.