You could call Paws to Help. They probably wrote a prescription for it when you 1st got it. When you bring that to the pet store they will give you a prescription card I think it is good for 6 months as far as I can remember. But if you don't have the prescription in hand, then you'll need to Paws to help and ask if they can mail it to you... or fax it
Call the office see if they can help you. They have other locations. Maybe one closer to you.
In my past experience, I have always been required to obtain a prescription. Call local stores. Many have vets come once a month or so to offer vet services at low fees.
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