"off label" prescriptions account for over 20% of all prescriptions. Think about that, 1 in 5 prescriptions written are off label! According to WebMD it "is entirely legal and very common." It is also used for almost all new applications of existing drugs, which is exactly where ivermectin would fall. To put a personal twist on it, I was prescribed not one, but two drugs off label. Neither drug was used to treat my disease, but the combination of the two got rid of the fatal disease I had. Yes, a disease that would have killed me. POOF! GONE!! Here is the kicker - the drugs were initially denied by my insurance, as the doctor said they would be, and then approved on appeal. Hold on to your hats - 12 weeks of treatment cost $148,000. Yep, you read that correctly, $148,000! Approved by insurance off label.
To be fair, these drugs had several tests behind them to show the effectiveness, but they were off label at the time. They were undergoing trials to show their safety and effectiveness, but it was over a year later before they would be FDA approved.
And, for those wondering, ivermectin is used for horses as an anti-parasitic drug. The cream you can buy at Tractor Supply is not the same as what you get at a pharmacy, duhh! That doesn't mean it will kill you, but it does mean you damn sure shouldn't follow the directions on the package for horses if you decide to use that for an ivemectin supply!!