Worming It is very important for your pigs health to worm twice a year. It is very important to keep a good worming routine for your pig’s health. I recommend to use Pyrantel Pamoate Suspension. It is a very mild wormer and is safe. Do make sure to weigh your pig before worming. I also do recommend to take a fecal sample into your vet before worming and have it lab tested and then you will know if the Pyrantel for pinworm or round worms will be a coplete worming for your pig. If they find other worms then your vet should be able to figure out the perfect wormer for your area.