Quick Answer: What Form Of B12 Is Best Absorbed?

Should vitamin b12 be taken under the tongue?

Vitamin B12 is also available in sublingual forms (which are dissolved under the tongue).

There is no evidence that sublingual forms are better absorbed than pills that are swallowed.

A prescription form of vitamin B12 can be administered as a shot.

This is usually used to treat vitamin B12 deficiency..

What happens when you swallow a sublingual pill?

With sublingual delivery, you may accidentally swallow some, leading to a somewhat erratic absorption rate (see merckmanuals link below), which could produce unwanted effects. In medication, “dosage” is typically very important (that goes without saying, really).

Why do you put b12 under your tongue?

Sublingual vitamins, which are meant to be taken by dissolving the tab under your tongue, are growing in popularity. They work because the nutrient is absorbed under the tongue and enters the bloodstream directly without having to go through the gastrointestinal tract. Sublingual vitamins have many other benefits.

When should I take b12 morning or night?

You may need to take vitamin B-12 separately from the above drugs and supplements — say, one in the morning and one at night — so you can get the full dose of vitamin B-12. Don’t take vitamin B-12 supplements if you have sensitivities or allergies to vitamin B-12, cobalt, and any other ingredients.

What medications should not be taken with b12?

Certain medications can decrease the absorption of vitamin B12, including: colchicine, metformin, extended-release potassium products, antibiotics (such as gentamicin, neomycin, tobramycin), anti-seizure medications (such as phenobarbital, phenytoin, primidone), medications to treat heartburn (such as H2 blockers …

How much vitamin b12 should a person over 65 take?

What’s the recommended dosage of vitamin B12 for seniors? The recommended daily allowance of vitamin B12 for adults is 2.4 micrograms. Experts have estimated that a Western diet contains 5-7 micrograms of vitamin B12, and a multivitamin often contains 12-25 micrograms.

Can I just swallow sublingual b12?

Do not swallow a lozenge or sublingual tablet whole. Allow it to dissolve in your mouth without chewing. The sublingual tablet should be placed under your tongue.

How long does it take for vitamin b12 to deplete?

(See also Overview of Vitamins.) Unlike most other vitamins, B12 is stored in substantial amounts, mainly in the liver, until it is needed by the body. If a person stops consuming the vitamin, the body’s stores of this vitamin usually take about 3 to 5 years to exhaust.

Is sublingual b12 better than oral?

However, it has recently been shown [9] that the sublingual route is equally effective. In this prospective study of 30 subjects with vitamin B12 deficiency, we found that sublingual and oral administration of 500 µg of cobalamin was equally effective in correcting cobalamin concentrations.

Is Liquid b12 better than pills?

Low B12 can cause anemia and fatigue. For many people with low B12 levels, a daily supplement in the form of a pill is as effective as taking a monthly muscle injection. The choice of shot or pill depends on the reason for the deficiency.

How do you know if your b12 is low?

Symptoms of Vitamin B12 DeficiencyWeakness, tiredness, or lightheadedness.Heart palpitations and shortness of breath.Pale skin.A smooth tongue.Constipation, diarrhea, loss of appetite, or gas.Nerve problems like numbness or tingling, muscle weakness, and problems walking.Vision loss.More items…•

What is the best time to take vitamin b12?

Water-soluble vitamins absorb best on an empty stomach. That means taking them first thing in the morning, 30 minutes prior to eating, or two hours after a meal. Water-soluble vitamins dissolve in water so your body can use them. Vitamin C, all B vitamins, and folate (folic acid) are water soluble.

How can I increase my b12 absorption?

Factors inhibiting B12 absorption We already know from Harvard that B12 absorption can be increased by taking folate (another B vitamin, this one found in higher amounts in chickpeas, liver, pinto beans, lentils, spinach, asparagus, and avocado, among others).

What Blocks b12 absorption?

Some stomach conditions or stomach operations can prevent the absorption of enough vitamin B12. For example, a gastrectomy, a surgical procedure where part of your stomach is removed, increases your risk of developing a vitamin B12 deficiency.

Is it OK to take 1000 mcg of b12 a day?

In one 8-week study in 100 older adults, supplementing with 500 mcg of vitamin B12 were found to normalize B12 levels in 90% of participants. Higher doses of up to 1,000 mcg (1 mg) may be necessary for some ( 10 ).

How quickly do b12 supplements work?

A response usually is seen within 48 to 72 hours, with brisk production of new red blood cells.

Does liquid vitamin b12 need to be refrigerated?

Vitamin B-12 is stable at room temperature. It doesn’t need to be refrigerated. … If you have a condition that causes you not to absorb enough B-12, you may need supplements.

Can vitamin b12 be absorbed if taken orally?

Approximately 56% of a 1 mcg oral dose of vitamin B12 is absorbed, but absorption decreases drastically when the capacity of intrinsic factor is exceeded (at 1–2 mcg of vitamin B12) [8].