Vita Prima Sun Drops Advanced Daily V is a deliciously orange flavored liquid vitamin and is recommended for Guinea Pigs, Pet Rabbits & Other Small Animals (hamsters, gerbils, rats, mice) as a daily supplement to their diets. Sun Drops has essential vitamins and is fortified with Vitamin C, which is especially important to Guinea Pigs. Vitamins are important to all small animals, even when fed premium diets, as it may help to fortify nutritional deficiencies caused by selective eating, as well as any natural vitamin depletion that may occur due to the age of the food, time of year, and storage methods.