B 12 (Methylcobalamin) Therapy MedClub by Dr Jenn B 12 Compliance Injection: Package Insert Prescribing Info These highlights do not include all the information needed to use NASCOBAL NASAL SPRAY safely and effectively. See full prescribing information for NASCOBAL NASAL SPRAY. NASCOBAL (cyanocobalamin nasal spray)Initial U.S. Approval: 1942 Vitamin B 12 intramuscular injections are also used therapeutically to help restore energy and combat various symptoms related to such deficiencies. Vitamin B 12 is essential to the development of healthy blood cells, nerve NASCOBAL cyanocobalamin spray Par Pharmaceutical , Inc DESCRIPTION Cyanocobalamin is a synthetic form of vitamin B12 with eq