Vitamin B12 is typically well-tolerated, but in very rare cases, there are serious side effects to be aware of. Learn more about them here.

Energix-B (hepatitis B vaccine [recombinant]) can cause side effects, such as fatigue and injection-site soreness. If you are not able to tolerate Energix-B side effects, talk with your doctor or ...

B vitamins support energy production, brain health, and red blood cell formation. B12 is especially important for nerve ...

Everyday Health independently vets all recommended products. If you purchase a featured product, we may be compensated. Learn why you can trust us. On This Page B vitamins are called the “energy ...