The dosage of deworming medicine for dogs needs to be determined according to the weight of the dog. Generally, it is 10~20mg per kilogram, and it can be taken once every three months. If the dog already has parasites in its stomach, it needs to be taken every Take it once a month for three months, and then return to normal. It is usually best not to feed your dog raw meat or unwashed food to prevent your dog from being infected with internal parasites.