buyivermectinforhumans.us
I purchased from them last year.
You don't need a prescription.
Minimum order costs: .80 cents per 12 mg. tab.
Also here is a dose and weight conversion chart.

You can actually get Ivermectin from Amazon. I am now taking it myself. Just cut off a pill sized amount from the end, and wash it down with water. The label has instructions by weight. It doesn’t taste bad at all with the apple flavor. :) Take it on an empty stomach. I bought it because I needed it fast, but, I have also purchased pills for future on hand need from:

http://buyivermectinforhumans.us/

They have good reviews on TrustPilot, and reasonable pricing. Unfortunately, delivery takes 1-2 weeks. God bless.