The dosage depends on your dog's weight and veterinary supervision. Most adult dogs under 10 pounds who are cleared to eat it can take 1/8 teaspoon twice a day. Dogs between 20 and 60 pounds can take up to one teaspoon twice a day.  ​ Larger dogs over 60 pounds can take up to two teaspoons twice a day.  These are guidelines and should be adjusted according to your vet's instructions.