Horny Goat Weed---Essence of Mustang, you mean?? Well, they say it DOES help migraines. BTW, you might appreciate this--a very late birthday present is coming --if you'll excuse the pun. An artisan glass...sculptured amusement...the sort of which you would appreciate. There's a company here in Georgia that touts the benefit of such said...sculptures...it is quite a thing of beauty...and will be a joy forever...and it also does not require BATTERIES which is quite nice for the environment. Hopefully it will PREVENT future migraines!