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. Most people get enough vitamin B12 in their diet, but a deficiency may occur in certain health conditions (e.g., poor nutrition, stomach/intestinal problems, infection, cancer). Serious vitamin B12 deficiency may result in anemia, stomach problems, and nerve damage.

Vitamin B12 injections can:

  • Increase energy levels and combat fatigue

  • Speed up metabolism

  • Help improve sleep patterns

  • Increase concentration

  • Improve mood

  • Boost the immune system

  • Help with weight loss

  • Possibly help with hair growth or stop hair loss
B12 Injections - La Crosse WI

There is no upper limit for the intake of vitamin B-12 because the risk of toxicity or overdose is extremely low. However, B-12 shots may have other side effects.

Mild side effects and potential risks, which should be referred to a doctor if they persist or worsen, include:

  • pain, redness, or itching at the site of the injection

  • mild diarrhea

  • swelling sensation in the body

More serious side effects, which require immediate medical attention, include:

  • muscle cramps

  • irregular heartbeat

  • unusual weakness or tiredness

  • swelling of the ankles or feet

Severe reactions are very rare but require emergency intervention. These include:

  • itching and swelling of the face, throat, or tongue

  • breathing difficulties

  • severe dizziness

  • sudden vision changes

  • slurred speech