Vitamin B12 is perfect for pets that are showing signs of muscle weakness, seizures, low energy levels or depression. B12 also helps to resolve digestive issues such as gas, diarrhea and constipation. Riva's B12 often improves the overall quality of life for all cats especially if they getting older. Riva's B12 pairs well with Riva's Pro-Colon for digestion and works great in combination with Riva's Magnesium for seizures. Beneficial for: Energy, Nerves, Digestion.