how you feel after b12 injection 💉 Energized Again with a Vitamin Are feeling tired, foggy, or run down? A Vitamin B12 injection could be the boost your body has been missing. Why Choose Why Do You Need B12

declares having received consulting honoraria from Altimmune, Amgen, Biohaven, Boehringer Ingelheim, Calibrate, Carmot Therapeutics, CinRx, Eli Lilly, Epitomee, Gila Therapeutics, IFA Celtics, Novo Nordisk, Pfizer, Rhythm, Scientific Intake, Wondr Health and Zealand Pharma

The majority of people can totally recover in a few weeks to a few months

Vitamin B12

Last updated: April 1, 2026 If you have been feeling unusually tired this spring or wondering whether a vitamin B12 injection might be the answer, you are not alone

Further evidence suggests the need to rationalise the use of vitamin be 12 in general practice

Vegans and vegetarians may require supplementation, as plant-based foods contain negligible B12 unless fortified