philter

noun

1. A kind of potion, charm, or drug; especially a love potion intended to make the drinker fall in love with the giver.

verb

1. To impregnate or mix with a love potion.

   “to philter a draught”

2. To charm to love; to excite to love or sexual desire by a potion.

   “Government of the Tongue Let not those that have repudiated the more inviting sins, shew themselves philtred and bewitched.”