Quest plus is an all-in-one equine wormer that kills tapeworms, large & small strongyles, encysted cyathostomes, pinworms. Moxidectin And Praziquantel. Contains 20 mg moxidectin and 125 mg praziquantel for use in horses and ponies over 6 mos of age for the treatment and control of large and small strongyles, pinworms, ascarids, hairworms, stomach worms, bots, encysted small strongyles and tapeworms. Delays the reappearance of worm eggs for 84 days. Each syringe treats 1,250 lbs body wt. Use in rotation with Quest Gel to provide optimum parasite protection.