EQUELL™ Ivermectin Paste Horse Wormer is a broad-spectrum equine de-wormer made with ivermectin. EQUELL™ Ivermactin Paste Horse Wormer removes important internal parasites, including bots, large and small strongyles, pinworms, ascarids, hairworms, stomach bots, lungworms and threadworms and the arterial stages of S. vulgaris with a single dose.