Burgess Excel Guinea Pig Nuggets with Mint are a complementary feed for guinea pigs. Did you know?. Just like humans, guinea pigs are not able to make or store vitamin C. Feeding high quality, guinea pig nuggets, like Burgess Excel, which are high in fibre and vitamin C, is the best way to ensure they're getting the vitamins and minerals that they need. Why choose Burgess Excel?. Skin & coat. Formulated for healthy skin and a glossycoat. Immune system. With antioxidants such as vitamin E to support a healthy immune system. Digestive health. Prebiotics and beneficial fibre to help maintain healthy digestion. Added mint. For extra tasty nuggets. Protected vitamin C. Essential for wellbeing. Don't forget that hay for dental health. As well as providing essential fibre, feeding hay and fresh grass have an important role in helping wear down your guinea pigs' continually growing teeth. Beneficial fibre is a measure of the total indigestible and digestible fibre that the food contains (NDF)