vitamin b12 injection red color A Vitamin B12 is a quick shot that gives your body vitamin B12 directly into the muscle. This helps your body absorb it faster than tablets. Vitamin B12 helps Vitamin B12 Injections | Skin

Clinical trials involving approximately 900 participants across six studies demonstrated excellent safety and tolerability

Correction 26 March 2021: This article was amended to make clear that fatigue was noted in a slightly higher percentage of volunteers than headaches after the second dose.

B12 injections contribute to nerve cell maintenance and neurotransmitter production

1,6 The most common adverse events for this study were chromaturia (n=6), pink or red skin discoloration (n=4), hypertension (n=3), erythema (n=2), and increased blood pressure (n=2)

B12 is a vitamin found in a variety of foods, such as fish, meat, eggs, and other dairy products