This formulation is based on the most scientific research available, which guarantees that your birds will receive a balance supply of the entire range of vitamins, including the following essential ones: Vitamin B1, Vitamin D, Vitamin A, Vitamin E, and Vitamin K. Totally soluble and pleasant tasting. Naturavit Plus protects the birds against a viaminosis and will result in maximum performances. This multi-vitamin liquid complex is important after any treatment or stress such as a race or show. A liquid vitamin. Naturavit Plus 250 ml / 8 oz.