Panacur Paste (fenbendazole) is for horses, foals and ponies only. It's safe for pregnant mares and very young foals. Panacur is highly effective against the predominant internal parasites of horses: large strongyles, small strongyles, pinworms and ascarids. It's conveniently administerd and features a unique apple-cinnamon flavor that horses readily accept. Get some for your horse today. Dosage: Panacur Paste is administered orally at a rate of 2.3mg/lb for the control of large strongyles, small strongyles and pinworms. One oral syringe will deworm a 2,500 lb horse. For foals and weanlings (less than 18 months of age) where ascarids are a common problem, the recommended dose is 4.6mg/lb and one oral syringe will deworm a 1,250 lb horse. For control of encysted early third stage, late third stage and fourth stage cyathastome larvae, and fourth stage larvae of S. vulgaris, the recommended dose is 4.6mg/lb for 5 consecutive days using one oral syringe for each 1,250 lbs of body weight per day.