If your from Europe, you can order Ivermectine from this shop:
and search for eqimectin 800.
During the payment process, select pick up by postal service and let the prescription be done by the shop.
It works, I have 6 tubes now, maybe you could also order international, but there's customs coming into play.
Edit: fixed the link.
And it comes in a handy applicator that fits up your arse. :)
Kek, still supposed to be taken orally, I presume... :)
To each his own... :)