PrimeBiome is backed by a 100% money back guarantee for a 60 full days from your original purchase date. If you’re not totally and completely satisfied with this product; your results or your experience in the first 60 days from your purchase, simply let us know by calling our toll free number or dropping us an email and we’ll give you a full refund (less shipping and handling) within 48 hours of the product being returned. That’s right, simply return the product, even empty bottles, anytime within 60 days of your purchase and you’ll receive a full, no questions asked refund (less shipping and handling).