Double the horse dose to be in the upper part of the human range. Say you're 100 kg (to make the math easy)
The horse paste is 1.87%.
A horse dose would be 18.7 mg / 100 kg
Human COVID dosage recommendations are .2 to .4 mg/kg or 20 to 40 mg / 100 kg.
If you double the horse dose, you'll get 37.4 mg / 100 kg. So near the upper range of the recommendations based on the foreign field studies.
This makes it very easy since the plunger is metered in pounds for horses and has 50 lb ticks. Just double your weight and set the stop at that tick and lock it and depress to the lock. Very easy. Yesterday was the first of the month and I took my apple jelly (horse IVM) and was done in a few seconds.
I dose once/month. Best of luck to you.