1. Try giving the medicine mixed with something your dog likes. If it is a tablet you can powder it, If its a capsule you can open it and take out the contents and mix with a treat.
2. The best was is to gently open the dog's mouth and push the tablet as far down the throat as you can without hurting the dog (provided the dog allows such handling!!) and then shut the muzzle while massaging the neck gently to cause a swallowing reflex.
3. Liquids are best administered with a dropper or a plastic syringe. They will not spill and you can give measured doses.