I measured out 3 teaspoons fit into the enclosed scoop. I made a rough calculation: I thought 1 scoop (as directed) for the average person, let's say weighing 150 lbs., so I figured 1 teaspoon per 50 lbs. I was afraid to overdo it because of the added vitamins, I didn't want to kill my dogs' livers.
So, when Draico was 50 lbs, I gave him 1 teaspoon, this also helped acclimate the dogs to taste. Peanut was 70 lbs and got 2 teaspoons. As they grew, I increased the dose, proportionately. Then I read a thread, but can't remember it, exactly, but it had to do with Benadryl dosing. Anyway, it stated something to the effect that a dog's metabolism is faster than a humans, therefore it was safe to give a dose recommended for a human. If anyone remembers this, and I mistated any info, please correct me.
Well, based on that thread, I decided to try to give the dogs a scoop in their yogurt, that was 9 months ago. To this day, we have seen no ill side effects, only positive ones. Peanut currently weighs 80 lbs, and Draico weighs 70 lbs.