My vet says that you should give one milligram per pound. So for a 30 pound dog, 30 mg.
990mg for a dog 110lbs. IE:9mg per LB. of animal weight.
5mg 2x day but check with your vet first
it depends on the weight of the dog. Small dogs get smaller amounts then big dogs.
Dosages are indicatedat this site: http://www.petplace.com/drug-library/tetracycline-panmycin/page1.aspx