Philter as a noun is a kind of potion, charm, or drug, sometimes specifically for making the drinker fall in love with the giver. while Philtre as a noun is a kind of potion, charm, or drug; especially love potion intended to make the drinker fall in love with the giver.
Part of speech: noun
Definition: A kind of potion, charm, or drug, sometimes specifically for making the drinker fall in love with the giver.
Part of speech: noun
Definition: A kind of potion, charm, or drug; especially love potion intended to make the drinker fall in love with the giver.
We hope you now know whether to use Philter or Philtre in your sentence.