These golden flies into his mug I’ll throw,

And soon the swain with fervent love shall glow.

Shakespeare, too, in A Midsummer Night’s Dream, alludes to the love philtre:

Yet mark’d I where the bolt of Cupid fell,

It fell upon a little western flower,

Before milk-white, now purple with love’s wound,

And maidens call it Love-in-Idleness.

Fetch me that flower; the herb I show’d thee once,

The juice of it on sleeping eyelids laid

Will make or man or woman madly dote