LubriSynHA is vet-developed and family owned, started by Dr. Steven Allday, renowned veterinarian specializing in joint care. Dr. Allday sought to protect joints in a safer and less-invasive way than injections or harmful medications. LubriSynHA was his solution. An easy-to-use liquid is simply top-dressed on food once a day and results are seen in less than a week. LubriSynHA is now even better with LubriSynHA Plus MSM! Our trusted HA formula has been fortified with the highest quality MSM to ensure comprehensive joint support. The gallon size is an eight (8) month supply for horses and most large dogs (over 100lbs) and even longer for smaller pets. It comes with a pump that accurately doses 1/2oz or 15ml daily.