Cyto B7 is a Medical Food that is targeted specifically towards Biotinidase deficiency. This product is an unflavored, concentrated liquid form of Vitamin B7 (Biotin). As with all Solace Nutrition products, the product is available for purchase for those under medical supervision and current medical care. The dosage needs to be determined by the patient's dietician or physician. With the goal of providing high-quality products for optimum patient care, Solace Nutrition offers a variety of medical foods to help with the support of a number of rare disorders and issues. Support and advocacy groups can help you connect with other patients and families, and they can provide valuable services.