Stabilized Vitamin C for your best friend! Natural Science Vitamin C contains high fiber Timothy hay and the stabilized vitamin C that guinea pigs need and other animals benefit from during times of stress, illness, or recovery. Offer Natural Science supplements to support the wellness of your small pets. You can trust that Natural Science Vitamin C is providing your furry friend with the essential balance of fiber and stabilized vitamin C for optimal health and wellness. With this supplement, they can enjoy the benefits of improved immunity and stress relief.