Updated: May 19, 2022
B12 Shot Benefits More Than Just Your Weight!
Published: Sep 9, 2020

Vitamin B12 has been getting a lot of attention lately. Scientific research demonstrates how important this vitamin is for maintaining a healthy metabolism. Many people find themselves struggling to lose weight and wonder whether vitamin B12 shots are good for weight loss.

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Although many people choose to get vitamin B12 injections in order to help them boost their metabolism and lose weight, there are many more vitamin B12 benefits than just helping with weight loss. B12 is a very important vitamin in many processes in the body and ensuring that you have enough B12 provides many health benefits.

From increasing your energy levels to combating brain fog to supporting healthy sleep, ensuring that you have enough B12 can make a big difference in how you feel and function on a daily basis.

Let’s Talk About B12 — What is It?

Vitamin B12, also known as cobalamin, is one of the eight B vitamins and is also one of the largest and most structurally complex. It is a water-soluble vitamin and assists in the metabolic function of all of the cells in the body. Vitamin B12 plays an essential role in

  • Red blood cell formation
  • Cell metabolism
  • Nerve function
  • DNA synthesis

How much B12 do I need?

When determining the recommended daily intake, or RDI, for vitamin B12, it is important to consider your specific situation—this includes your age, lifestyle, and individual medical conditions.

The general recommended daily intake for adults over the age of 14 is 2.4 mcg.

What are the symptoms of vitamin B12 deficiency?

An estimated 6% of people under the age of 60 and close to 20% of people over age 60 may be living with a vitamin B12 deficiency. Since vitamin B12 affects so many body systems, there is a wide range of potential symptoms.

Knowing the symptoms of a possible B12 deficiency will give you the power to know when to reach out to your doctor and begin asking questions about whether you should buy b12 injections.


  • Tinnitus – ringing in your ears
  • Tremors
  • Numbness and tingling in your hands and feet
  • Confusion
  • Disorientation
  • Muscle weakness
  • Abnormal reflexes
  • Unsteady or abnormal gait
  • Balance problems
  • Dizziness
  • Restless legs
  • Fatigue
  • Lack of energy
  • Mood changes
  • Brain fog or other cognitive problems
  • Nausea
  • Decreased appetite
  • Irritability
  • Diarrhea
  • Smooth and tender tongue
  • Dry cracked corners of the mouth
  • Difficulty sleeping

If you are experiencing these symptoms, it is important to discuss them with a healthcare provider. Many of these symptoms are non-specific and are attributed to the aging process, but that may not be the case. Contact a healthcare provider at Invigor Medical to determine whether you may have a vitamin B12 deficiency and learn about potential treatment options.

How do you treat B12 deficiency?

For people deficient in vitamin B12, getting extra B12 can significantly relieve their symptoms and restore their quality of life. In some cases, taking an oral B12 supplement will be enough.

However, many people have trouble absorbing B12 through the digestive system. This can be because of aging, which gradually reduces the body’s ability to absorb oral B12. It can also be caused by certain medical conditions or other medications that you’re taking. In these cases, injections of B12 are often a better way to raise B12 levels than taking supplements.

What are the potential benefits of B12 shots?

Some of the potential B12 benefits include:

  • Increased energy. Vitamin B12 is necessary for amino acid and fat metabolism within the body. When you don’t have enough, it’s harder for your body to extract energy from food.
  • Improved concentration. B12 is needed for optimal brain function. People who are B12 deficient may experience issues like brain fog and trouble concentrating. Getting enough B12 can help to improve your ability to concentrate and lift the brain fog.
  • Improved mood. Because of B12’s role in the nervous system, B12 deficiency can lead to problems like depression and anxiety. However, with enough B12, the brain will function better, which can lead to an improved and more stable mood.
  • Improved metabolism. B12 has a role in many aspects of metabolism. Optimizing levels of B12 can help support a healthy metabolism, which can help many people lose excess weight. When your metabolism is not functioning properly, then you may lack energy while at the same time finding yourself gaining stubborn pounds that are very hard to get rid of. Vitamin B12 can help restore normal metabolic processes so that you can lose excess weight. For many people, this is one of the most important B12 benefits.
  • Better immune system function. Studies have linked low B12 levels to difficulty fighting off pathogens such as bacteria and viruses. For people with low levels, taking B12 can restore the immune system’s ability to optimally fight off these dangerous pathogens. As a result, you’ll tend to get sick less often and recover faster.
  • Better sleep. While we often think of sleep simply as “turning off” the brain, the truth is that sleep is an active process. Therefore, a brain that doesn’t function well may also not be able to sleep well, causing disruptions in the circadian rhythm.
  • Treating anemia. People who have B12 deficiency often become anemic, which means they don’t have enough red blood cells. These are the cells that carry oxygen from the lungs to the rest of the body, so they’re vital in ensuring that you have enough energy to be physically active. Restoring normal B12 levels helps bring the red blood cell count back up and treat the anemia.
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B12 Injections

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Learn About B12 Injection

If you have a deficiency of vitamin B12, then taking extra B12 can make a huge difference in your quality of life. For those who have normal absorption of B12, B12 benefits will generally be similar whether you take oral B12 or get B12 shots.

However, for those whose absorption is impaired due to aging or a medical condition, B12 shot benefits may be far greater because B12 taken orally may not be absorbed well enough to raise levels into the normal range.

Can you get too much vitamin B12?

Some vitamins are water-soluble, while others are fat-soluble. Vitamin B12 is a water-soluble vitamin. In general, water-soluble vitamins are considered very safe and are unlikely to lead to toxicity. If you take a dose that’s a little too high, your body will excrete it in your urine.

This doesn’t mean that it’s impossible to take too much of a water-soluble vitamin, and people sometimes experience side effects from taking too much vitamin B12. Serious toxicity is very rare, but it has occurred in a few cases. However, there is no set “tolerable upper limit” for vitamin B12 because it has such a low potential for toxicity, and the body does not store excess amounts. 

The same side effects can occur whether you take oral B12 supplements or B12 shots, except for redness or swelling at the injection site.

If you want a high-quality, pharmaceutical-grade B12 supplement with multiple benefits, then you should consider Invigor Medical’s vitamin B12 supplement. To get started on the treatment plan, complete your medical forms and talk to an Invigor Medical healthcare provider.


While we strive to always provide accurate, current, and safe advice in all of our articles and guides, it’s important to stress that they are no substitute for medical advice from a doctor or healthcare provider.  You should always consult a practicing professional who can diagnose your specific case.  The content we’ve included in this guide is merely meant to be informational and does not constitute medical advice. 


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Written by Riazzudin


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