The Collaborative International Dictionary
Philtered
Philter \Phil"ter\, v. t. [imp. & p. p. Philtered; p. pr. & vb. n. Philtering.]
To impregnate or mix with a love potion; as, to philter a draught.
To charm to love; to excite to love or sexual desire by a potion.
--Gov. of Tongue.
Wiktionary
philtered
vb. (en-past of: philter)