Dosage for horses has nothing to do with dosage for dogs.

3.6 grams = 36,000 mg

How many ml of product is there?

Take 36,000 and divide by how many ml of product you have in the tube, and you will get "x" mg/ml (that is your guide).

Knowing each ml of product in your tube has "x" mg in it, then you need to know that dogs are supposed to get 20 mg/lb as a dosage. But it doesn't end with dosage, now you have to worry about frequency ... which is once if rounds, then another dose 12 days later ... or twice/day, 3 days in a row for hooks, then another follow-up 10 days later).

Jack