The most powerful love potion known to wizardkind is Amortentia. It is a highly dangerous potion that causes a powerful infatuation or obsession from the drinker. It was memorably used by Merope Gaunt to trick and steal away Tom Riddle for years, which was responsible for the birth of Voldemort. The potion is so powerful that it can cause people who ingest it to lose their mind and be fixated on a singular person. It is also interesting to note that the potion always has a different smell based on what the person who smells it is interested in.