Sometimes your reptile may need a special Vitamin supplement such as Vetafarm Herpavite to support their growth and wellbeing. Metabolic Bone Disease is a huge problem in captive reptiles so their diet must be supplemented accordingly.  Multical Dust is a vitamin fortified, triple source calcium that is applied to food items to fill their nutritional deficits. It can be added to the reptile‚Äôs food or can be dusted lightly over crickets or mealworms intended for consumption by your pet.