Hagen Guinea Pig Pellets are a complete pelleted diet suitable for all stages of a guinea pig’s life cycle. All vital nutrients required for breeding, lactation, growth, and maintenance are included. The pellets contain Vitamin C to compensate for the guinea pig’s inability to manufacture this important vitamin, lack of which will cause serious health problems. Regular use of a balanced vitamin supplement, such as Hagen Vitamin Supplement Conditioner, is recommended to help prevent any vitamin deficiencies. The diet may also be supplemented with fresh greens daily, as well as a dried hay product such as Hagen Alfalfa. Hagen Guinea Pig Pellets come in a resealable zipper bag to seal in freshness.