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 Naso B12 Nasal Spray Uses, Side Effects, Price, and Dosage Information Medwiki (English) The Middletown Feeling rundown low on energy or mentally foggy? A B12 injection may help give your body the boost it needs from the inside out. Benefits of B12 injections may Efficacy of different routes of vitamin B12 supplementation for the treatment of patients with vitamin B12 deficiency: A systematic review and network meta analysis Irish Journal of Medical Science (1971 )