Why do I have to put B12 under my tongue? (2024)

Why do I have to put B12 under my tongue?

The thought behind administering it under the tongue is that it can be absorbed directly into the bloodstream through what's called the mucous membrane in your mouth (UMichigan Health Library, 2018). This method is thought to enhance absorption, but research doesn't fully confirm this.

(Video) Doctor explains clinical signs of Vitamin B12 (cobalamin) deficiency | Glossitis, mouth ulcers etc.
(Doctor O'Donovan)
Does vitamin B12 have to be taken under the tongue?

Some products that contain vitamin B12 need to be placed under the tongue and held there before swallowing. Follow label directions carefully to get the most benefit. Take this medication regularly in order to get the most benefit from it. To help you remember, take it at the same time each day.

(Video) Taking B-12 Under the Tongue
(Dr. Russell Jaffe)
How long does it take for B12 sublingual to work?

It may take a few weeks before your vitamin B12 levels and symptoms (such as extreme tiredness or lack of energy) start to improve.

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What is the best way to take vitamin B12 for absorption?

To absorb more B12, divide the dose over the course of the day and take separately from a B12-containing meal.

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(JJ Medicine)
Why spray B12 under tongue?

This route of administration is particularly useful in patients who find it difficult to take B12 in liquid and tablet forms. In terms of effectiveness, research suggests that compared to tablet forms, sprays have a faster onset of action as they do not need to wait for dissolution.

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Is it better to take B12 sublingual or swallow?

In fact, one clinical study comparing the same amount of B-12 given orally or under the tongue found they were equally effective at correcting B-12 deficiency over a two-month period.

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What blocks B12 absorption?

Part of liver B12 is excreted in bile, and undergoes an enterohepatic circulation. The main causes of B12 malabsorption include inherited disorders (Intrinsic factor deficiency, Imerslund-Gräsbeck disease, Addison's pernicious anemia, obesity, bariatric surgery and gastrectomies.

(Dr Dray)
What happens to your body when you start taking vitamin B12?

Vitamin B12 supplements (along with other B vitamins) reduce blood levels of hom*ocysteine, a compound linked to an increased risk of having a heart attack or stroke.

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What are the symptoms of low B12?

What are the symptoms of vitamin B12 deficiency anemia?
  • Weak muscles.
  • Numb or tingling feeling in hands and feet.
  • Trouble walking.
  • Nausea.
  • Decreased appetite.
  • Weight loss.
  • Irritability.
  • Lack of energy or tiring easily (fatigue)

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Is it OK to take 1000 mcg of B12 a day?

Even the lowest doses in B12 supplements are many times the recommended dietary allowance. Doses up to 1,000 mcg, though unnecessary, aren't harmful. Fortified foods. Many breakfast cereals, soy products, and yeasts are fortified with B12.

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(Fit Tuber)

How can I raise my B12 level fast?

If you're looking to boost the amount of vitamin B12 in your diet, you should eat more animal products, like meat, seafood, dairy and eggs. Fortified breakfast cereals are another great way to get more B12. It is possible that your provider may want you to take a vitamin B12 supplement in addition to your diet change.

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(Dr. Eric Berg DC)
How can I raise my B12 levels fast?

To increase the amount of vitamin B12 in your diet, eat more of foods that contain it, such as:
  1. Beef, liver, and chicken.
  2. Fish and shellfish such as trout, salmon, tuna fish, and clams.
  3. Fortified breakfast cereal.
  4. Low-fat milk, yogurt, and cheese.
  5. Eggs.
Dec 5, 2022

Why do I have to put B12 under my tongue? (2024)
Why won't my body absorb B12?

Since your body doesn't make vitamin B12, you have to get it from the foods you eat or from supplements. You can get vitamin B12 deficiency if you can't absorb vitamin B12 due to problems with your gut or if you have pernicious anemia, which makes it difficult to absorb vitamin B12 from your intestines.

How B12 deficiency ruined my life?

Signs and symptoms

One primary symptom of B12 deficiency is fatigue – a level of tiredness or exhaustion so deep that it affects daily life activities. Other symptoms are neurological and may include tingling in the extremities, confusion, memory loss, depression and difficulty maintaining balance.

How long after starting vitamin B12 will I feel better?

Hydroxocobalamin starts to work straight away. However, it may take a few days or weeks before your vitamin B12 levels and symptoms (such as extreme tiredness or lack of energy) start to improve.

What foods should I avoid for B12 deficiency?

Foods or drinks to avoid
  • Folate (vitamin B9) is an essential nutrient, especially before and during pregnancy. ...
  • However, too much folic acid can mask a vitamin B12 deficiency. ...
  • Research has suggested that the consumption of alcohol may reduce vitamin B12 levels.
Jul 27, 2020

What happens if you accidentally swallow a sublingual B12?

The amount of time it takes to dissolve may vary from one medication to the next. Avoid swallowing the tablet while you wait for it to dissolve. If you swallow the tablet, it won't work as quickly and it may not have the desired effect.

What is the best time of day to take sublingual B12?

“Take water-soluble vitamins on an empty stomach with a glass of water,” recommends Dr. Perez-Gallardo. And since it can be energizing, Dr. Perez-Gallardo says that the best time to take vitamin B12 is in the morning, so it won't affect your sleep.

What happens if you take too much sublingual B12?

Safety and side effects

Your body absorbs only as much as it needs, and any excess passes through your urine. High doses of vitamin B-12, such as those used to treat a deficiency, might cause: Headache. Nausea and vomiting.

Does B12 affect bowel movements?

Gastrointestinal issues. A B12 deficiency may also cause diarrhea, nausea, constipation, bloating, gas, and other gastrointestinal symptoms ( 2 , 19 ). These issues can affect both adults and children ( 2 , 20 ).

Is it good to take B12 everyday?

Vitamin B12 is an essential nutrient. Fish, shellfish, meat, eggs, and dairy products are good sources of vitamin B12. The amount that should be consumed on a daily basis is called the recommended dietary allowance (RDA). The RDA is 2.4 mcg daily for people 18 years and older.

Can low B12 cause weight gain?

People with vitamin B12 deficiency are likely to experience a wide range of symptoms, though weight gain is unlikely one of them. If you're experiencing unexplained weight gain, consider discussing it with your healthcare provider or a registered dietitian to determine the root cause.

What should you not do after a B12 shot?

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

What happens if you take vitamin B12 and don't need it?

Your doctor will give you the right dosage of vitamin B-12 supplement, especially if you will inject it. Taking too much can cause side effects like nausea, headache, dizziness, and in rarely, blood clots or cancer. Everyone needs vitamin B-12, and most people get enough through their diet.

Can I take B12 and vitamin D together?

Interactions between your drugs. No interactions were found between Vitamin B12 and Vitamin D3. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.


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