Philter is a noun that refers to a potion credited with magical powers. 

The Greek verb for ‘to love’ provides the basis for our word of the day. Philter has been with us since the late 16th century. Here’s an example of it in use:

I’m a big fan of those old corny fantasy movies from the 1950s, especially the ones that feature some guy falling in love with a gorgeous gal after sipping from a philter. They make me laugh by suggesting you’d have to drink a magic potion to fall head over heels for a Marylyn Monroe or a Barbara Stanwyck.