vitamin b12 injection prefilled syringe Cairo, Egypt, June 3 2023: Betolvex Cyanocobalamin tannin complex for Intramuscular used to treat B Stock Photo Vitamin B12 for Injection Cyanocobalamin

[3] Patients with deficiencies often experience fatigue, cognitive or nerve impairments, and slow recovery

As our understanding and work evolved, our scope expanded to other kinds of B12 malabsorption

There is no published evidence base for cycles longer than 24 weeks, so any extended use is unsupported by trial data

This benefit helps prevent the spike or significant drop common in most diets

Best overall: Thorne Vitamin B12 | Skip to review Best multivitamin with B12: Mindbodygreen Ultimate Multivitamin+ | Skip to review Best vegan: HUM Nutrition B12 Turbo | Skip to review Best liquid B12: Pure Encapsulations B12 Liquid | Skip to review Best gummy: OLLY Daily Energy Gummies | Skip to review Best whole-foods supplement: Garden of Life Vitamin Code Raw B12 Capsules | Skip to review Most affordable: Nature Made B12 Softgels | Skip to review Best allergen-free: Pure Encapsulations Methylcobalamin Capsules | Skip to review Best B complex vitamin: Nordic Naturals Vitamin B Complex | Skip to review Vitamin B12 is an essential dietary nutrient necessary for energy production and proper functioning of your nervous system, among other important roles