Hi Edwin,
That's a really good question! Probiocin is a probiotic and something that can be used on a continual basis to help to maintain gastrointestinal health. Taking the supplement daily will only work to improve your pet's health, it's not like taking another type of medication where taking too much could do harm. You can learn more about Probiocin in the "more information" section of the product page. Good luck :)
Emmy