How do you treat a dog with worms?

The first thing you need to do is try to identify what kind of worms your dog has. Once you've done this, go to your local pet store and ask for worming medication specific to the worms you are trying to treat. It would be easiest to take a stool sample to your local vets office and have them identify and prescribe the appropriate medication. All you need is the stool sample and the weight of your pet. Hope this helps.

2nd Answer: If your dog has intestinal worms you can give him a herbal formula called Inulin PK.

3rd answer if you can not physically see them in the dogs faeces but it shows symptoms of worms or are just worried, take it to a vet then let them figure out what's best for your dogs. If you give your dog a heart worm tablet when they have heart worm it can be very lethal and most likely will kill the dog so if you are concerned take him to a vet and they will test and see what's wrong