What happens if your body has too much vitamin B12? Read on to find out the dangerous side effects of having excessive levels ...

Medically reviewed by Erika Prouty, PharmD Key Takeaways Vitamin B12 is generally safe, but rare reactions like allergies or ...

Vitamin B12 is a key building block for the brain, and evidence suggests that vitamin B12 deficiency is linked with treatment-resistant depression, anxiety, panic disorder, and even cognitive decline ...

Injections deliver liquid medications, fluids, or nutrients directly into a person’s body. Different types of injections include intravenous, intramuscular, subcutaneous, intraosseous, and intradermal ...