Sale Add Wish List Quick view Choose Options Endurosyn DVM Endurosyn Electrolyte Gel Endurosyn Feline Digestive Oral Gel is a unique, patented oral nutritional supplement formulated with amino acids, electrolytes, vitamins, fatty acids and lactic acid bacteria to support your cat's... MSRP: Was: $23.99 Now: $17.98 - $19.98 Choose Options