Donna, this is Donna, LOL, I will tell you what I do as per my vets instructions. At one month of age I give the foal dosage of Strongid. I get the foals weight, nomally by standing on scales and holding it, and figure out the dosage into a 3cc syringe. That is allot easier to measure out the correct dosage. And if you give a little to much, it will not hurt the foal. After the first dose at a month, I give a dose every month, weighing in the foal each time to determine the correct dosage. Beginning at 6 months I give the Ivermectin accoring to the foals weight and from that instance on I alternate as I do my big horses.
If for some reason it seems a foal is not gaining weight and looks as though it may be wormey, I will give a 5 day regimant of Panacure, again, carefully seperating the dosage according to weight.
I hope this is information that will help you, and yes, DO NOT EVER GIVE QUEST !!!!!!!!!!!!!!!