ProC is great for chinchillas
ProC is fine for chinchillas. It contains prebiotic soluble fibre, probiotics vitamin C and glucose. The vitamin C is there to compensate for the vitamin C which is always lost by stressed/sick animals. ProC isn't intended as a vitamin supplement as such, it is a pre/probiotic.
Chinchillas can have problems if they receive high levels of glucose in food or water for long periods, because like degu they have a diabetes-prone physiology - their insulin control system is not as sensitive as ours! If you find that your animal has long term gut issues and needs probiotic for months at a time then please contact us to review it or contact your vet for advice.
US keepers of chins are very enthusiastic about giving lots of vitamin C to chins because vitamin C is involved in developing healthy connective tissue and deficient animals can develop dental abnormalities. They correctly point out that chins simply can't get too much vitamin C as it is simply excreted in the urine. See www.chincare.com.