Vitamin B12 injection vial and syringe on a clean medical tray, representing energy and wellness support.

Vitamin B12

Vitamin B12

Cyanocobalamin is a man-made form of vitamin B12 used to treat low levels (deficiency) of this vitamin. Vitamin B12 helps your body use fat and carbohydrates for energy and make new protein. It is also important for normal blood, cells, and nerves.  Vitamin B12 helps your body use fat and carbohydrates for energy and make new protein. It is also important for normal blood, cells, and nerves. B12 is especially crucial for the liver, brain, and nervous system, making it the preferred choice for supporting nervous system health. Incorporating Vitamin B12 into your routine can lead to improved overall well-being and increased energy levels, without the unwanted side effects like shakes or jitters.

Signs You May Be Deficient in Vitamin B12 Include

(but not limited to):

A deficiency in B vitamins, including B12, can manifest through various symptoms, such as:


  1. Unexplained weight gain
  2. Skin rashes and irritation
  3. Cracks around the mouth
  4. Scaly skin on the lips
  5. Swollen tongue
  6. Persistent fatigue
  7. General weakness
  8. Anaemia
  9. Mental confusion
  10. Irritability or depression
  11. Nausea and abdominal cramps
  12. Digestive issues like diarrhoea or constipation
  13. Numbness or tingling in the feet or hands. 

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Vitamin B12 helps your body use fat and carbohydrates for energy and make new protein. It is also important for normal blood, cells, and nerves.

Vitamin B12 Facts:

B12 injections are typically used as a treatment for certain types of Anaemia (pernicious anaemia) In this type of anaemia, people lack Intrinsic factor in the stomach which is necessary for the absorption of the vitamin. Vegetarians (especially vegans) are also given shots of B12 since their diet is low in animal products, the primary source of B12. People with chronic fatigue or anaemia require weekly to monthly injections of vitamin B12 usually because the oral form is not dependable. Vitamin B12 shots are most effective when taken at regular intervals (usually weekly or monthly)

Benefits of Vitamin B12 Include (but not limited to):

  1. More energy, mental alertness, and stamina for everyday tasks plus a healthier immune system.
  2. Improves sleep.
  3. Increases metabolism, thereby aiding in weight loss.
  4. Reduced allergies, stress, and depression.
  5. Improves mood stabilisation.
  6. Lessens frequency and severity of migraines and headaches.
  7. Helps lower homocysteine levels in the blood, thereby reducing the probability of heart diseases and stokes

Possible Side Effects and Contraindications of Vitamin B12 Include

(but not limited to):

  1. A vitamin B12 shot is safe and generally has no side effects, even in higher doses.
  2. Some redness and swelling at the injection site may occur. This should start to get better within 48 hours.
  3. In rare cases, B12 can cause diarrhoea, peripheral vascular thrombosis, itching, transitory exanthema, urticaria, feelings of swelling of the whole body
  4. Sensitivity cobalamin is a contraindication.
  5. People with chronic liver and / or kidney dysfunction should not take frequent B12 injections.
  6. Interactions with drugs: Chloramphenicol can impede on the red blood cells producing properties of B12.
  7. Other drugs that decrease or reduce absorption of B12 are: Antibiotics, cobalt irradiation, colchicine, colestipol. H2-blockers, metformin, nicotine, birth control pills, potassium chloride, proton pump inhibitors such as peracid, losec, aciphex and zidovudine.

Contra Indication Include (but not limited to):

  1. B12 is contraindicated in Leber’s disease, Leber hereditary optic neuropathy (LHON) is an inherited form of vision loss. Although this condition usually begins in a person's teens or twenties, rare cases may appear in early childhood or later in adulthood) , a hereditary optic never atrophic condition)
  2. A allergy to Vitamin B 12
  3. If you are in any doubt speak with you GP first prior to any procedure