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How Quickly Does a B12 Shot Work and How Will I Feel?

How Quickly Does B12 Shot Work?

How Quickly Does B12 Shot Work?

B12 shots are the most effective way for your body to absorb vitamin B12 quickly and effectively. The injection is administered directly into your bloodstream, bypassing the digestive process and providing near-immediate results. Continue reading if you're interested in learning more about the B12 shot's potential effects and how quickly they might take effect. We will discover some of the typical bodily responses—both positive and negative—that can occur following a B12 injection.

How Quickly Does the B12 Shot Work?

B12 shots are a quick and effective way to treat or prevent B12 deficiency as they bypass the digestive process and enter the bloodstream immediately. Generally, people can start to feel the benefits of a B12 shot within 24–72 hours after treatment. However, some people may experience faster results than others for a few reasons:

  • Those with severe deficiencies might require several injections to start feeling the benefits of a B12 shot.
  • B12 shots should be administered by a medical professional to ensure accurate dosage and optimal results.
  • Lifestyle choices such as diet and exercise can affect how quickly the benefits of a B12 shot will be felt.
A pharmacist administering a B12 shot

A pharmacist administering a B12 shot

How Long Does It Take To Fix a B12 Deficiency?

A typical treatment plan for B12 deficiency involves receiving a vitamin B12 shot every day or every week until the level of vitamin B12 in your blood increases.

After your vitamin B12 levels return to normal, you may only need a shot once a month. For less severe cases of B12 deficiency, doctors may recommend large doses of vitamin B12 pills.

It can take up to 6 to 12 months before you fully recover from a vitamin deficiency, but the recovery time would be much longer without the shot. During this time, doctors often recommend taking a vitamin B12 supplement in addition to the shot.

Vitamin B12 deficiency can have serious effects on the body, so it is critical to get treated as soon as possible. With a proper treatment plan, you can restore your vitamin B12 levels and start feeling better soon.

How to Get Quicker Results From a B12 Shot

To feel more immediate results from a B12 shot, it is helpful to follow a healthy, balanced diet, reduce stress levels, get adequate sleep, and exercise regularly. Additionally, taking an oral B12 supplement in addition to the injection may also help boost energy levels faster.

Most people can boost their B12 levels by eating a balanced, wholesome diet.

Most people can boost their B12 levels by eating a balanced, wholesome diet.

How Will I Feel After a B12 Shot?

Depending on the individual, a B12 shot can have varying effects. Here are some guidelines for some positive and negative effects associated with B12 injections.

Positive Effects of the B12 Shot

Many people experience an energy boost, as B12 helps your body make DNA, RNA, and red blood cells that carry oxygen throughout your body. Additionally, B12 can give you more energy, boost your metabolism, and help you lose weight.

A B12 shot may also be used to manage or prevent symptoms like fatigue, heart issues, neurological damage, mood swings, muscle weakness, and hormonal imbalances.

Enjoy the positive effects of a B12 shot in 24-72 hours

Enjoy the positive effects of a B12 shot in 24-72 hours

Negative Effects of the B12 Shot

It is important to know that there can be some side effects associated with B12 injections.

The most common side effects are:

  • pain/redness at the injection site
  • mild diarrhea
  • itching
  • a feeling of swelling all over the body

If any of these effects last or get more severe, it is imperative to tell your doctor or pharmacist promptly.

What to Avoid After a B12 Shot

Avoid strenuous exercise for 48 hours after your treatment, and avoid touching the injection site for 6 hours after your treatment. You may experience a dull ache at the injection site for around 1 hour after your treatment.

Summary

B12 shots are an effective way to treat or prevent B12 deficiency and can provide immediate results. Depending on the severity of your condition and your lifestyle choices, you may feel the benefits of a B12 shot within 24–72 hours. Additionally, it is important to follow a healthy lifestyle, take an oral B12 supplement, and be aware of the potential side effects to get the best results from your B12 shot. If you are considering a B12 shot, talk to your doctor to determine if it is the right option for you.

Sources and Further Reading

This content is accurate and true to the best of the author’s knowledge and does not substitute for diagnosis, prognosis, treatment, prescription, and/or dietary advice from a licensed health professional. Drugs, supplements, and natural remedies may have dangerous side effects. If pregnant or nursing, consult with a qualified provider on an individual basis. Seek immediate help if you are experiencing a medical emergency.

© 2023 Louise Fiolek