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Vitamin B12 Injections | B12 Shots

Vitamin B12 is a water soluble vitamin that contains the mineral cobalt and is therefore also known as COBALAMIN (the Cobalt Vitamin). 

It is required for proper functioning of the nervous system, production of red blood cells and synthesis of DNA. In addition to its role in these vital systems it is involved in 100’s of biochemical reactions in the body that control fat and carbohydrate metabolism, protein synthesis, the breakdown of homocysteine and many others. Because of its wide reaching effects in the body Vitamin B12 deficiency has been linked to increased risk of cardiovascular disease, dementia, cancer, depression and osteoporosis. 

Common symptoms of Vitamin B12 deficiency include:

  • – Fatigue
  • – Nervousness
  • – Numbness in the arms and legs
  • – Tingling in the arms and legs
  • – Anemia and Pernicious Anemia
  • – Weakness
  • – Neuro-Cognitive Decline

There are many common medications, medical procedures and medical conditions that may lead to Vitamin B12 deficiency including:


  • – Prilosec, Prevacid and other proton-pump inhibitors that are used to treat heartburn and ulcers
  • – Pepcid, Zantac and other H2 receptor antagonists that are used to treat ulcers
  • – Metformin that is used to treat diabetes

Medical procedures 

  • – Gastrointestinal surgery such as weight loss surgery or surgery to remove all or part of the stomach

Medical conditions 

  • – Gastrointestinal disorders including Crohn’s and celiac disease
  • – Pernicious anemia
  • – Atrophic gastritis

Other reasons 

  • – Age
  • – Vegetarian or vegan diet

Recent research has also shown that there is an inverse association between Vitamin B12 status and obesity which means that the higher your weight, the more likely you are to be deficient in Vitamin B12 (reference). 

There are a number of ways to increase Vitamin B12 levels in your body including: 

  • – Consuming more Vitamin B12 containing foods (list at end)
  • – Taking oral supplements
  • – Getting injections (intramuscular or intravenous)

Several steps in the digestive process make absorption of B12 from food sources and oral supplements more difficult and less efficient. Vitamin B12 injections are a very reliable way to increase B12 levels in your body because they eliminate the need for digestion and absorption of the vitamin, instead it is delivered directly to your bloodstream. 

There are multiple forms of Vitamin B12 that are available for injection:

  • Cyanocobalamin
  • Hydroxocobalamin
  • Methylcobalamin

At BrightBody we have methylcobalamin and hydroxocobalamin available for injection. Methylcobalamin is an activated form of Vitamin B12 that your body can use immediately to boost energy, metabolism, fat burning and mental clarity. Hydroxocobalamin is a longer acting form of Vitamin B12 that will support your energy, metabolism, fat burning and mental clarity over the long haul. Some people prefer the immediate boost and others prefer the long-acting support but either way Vitamin B12 can be a great addition to your healthy lifestyle!

Vitamin B12 containing foods:

  • Meat
  • Poultry
  • Fish/Shellfish
  • Dairy products
  • Eggs

Visit the Linus Pauling Institute Micronutrient Information Center for a detailed list of Vitamin B12 containing foods.

B12 Injection Side Effects:

  • Minor pain and swelling at injection site
  • Red, itchy skin at the injection site
  • Numbness or Tingling
  • Serious Side Effects are RARE
  • If you are using excessive amounts of high B12 you could experience increased nervousness or anxiety. If this happens, lowering the dose will usually resolve this.
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