my little guy was 2.5 lbs when he had a bout with constipation... my vet said to give him a little less than a tablespoon. I gave him that by itself and he loved it. At the same time, for a 24 hour period, the vet (and very helpful and friendly people from this site), said to feed him boiled chicken and rice at meal time, which Nada also loved. We went from struggling to free flowing in less than 24 hours.