Best Form of Vitamin B12 to Take for Absorption

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Choosing the best B12 supplement can be a bit confusing for a lot of people. There are so many of them, and they go by different names and different forms. In this article, I’ll help you choose the best and most absorbable form of vitamin B12 to help boost your energy and prevent a deficiency.

Vitamin B12 isn’t something most people think about that often, but some people are at a greater risk of developing a deficiency and serious health complications if not corrected. Fortunately, even if you have trouble absorbing B12, there are supplements which can bypass the stomach entirely and go straight into the bloodstream.

How much B12 do you need?

The amount of vitamin B12 you need to be healthy is actually very small. You’d think that it would be easy to acquire from diet alone, but deficiencies still do occur mainly due to restrictive diets and problems absorbing B12 from food.

Recommended Daily Allowance for B12

  • Adults need 2.4 mcg per day
  • Pregnant women need 2.6 mcg per day
  • Breastfeeding women need 2.8 mcg per day

These amounts are what you need to stay “healthy”, but they may not be what could be considered as adequate to promote health according to more recent research.

A study published in 2010 showed that a daily intake of 4 – 7 mcg per day of vitamin B12 was better at lower levels of MMA (sensitive test for B12 deficiency).

Vitamin B12 supplements are available in very high doses because there is no known upper limit. In fact, when I first started taking vitamin B12 I was taking 5000 mcg per day! I wanted to raise my B12 levels rapidly, so I looked for the highest dose B12 supplement I could find at the time.

The different forms of B12

There are four types of vitamin B12, but you’re only really going to want to opt for just 2 of them when considering a supplement to take.

  1. Methylcobalamin – Methylcobalamin is absorbed better by the body than other forms of B12. It also remains in the body for longer, so it can be delivered to the cells where it’s needed. You can also get standard B12 supplements or sublingual which will be delivered under the tongue and absorbed rapidly, bypassing the stomach.
  2. Cyanocobalamin – This is a synthetic version of B12 which is made in the lab and is often used in vitamin supplements. Not used by the body in this form, it is converted to methylcobalamin.
  3. Hydroxocobalamin – This form of B12 is produced by bacteria and found in food. This is the type of B12 which is mostly used for injections.
  4. Adenosylcobalamin – And finally, the least stable B12 available, and is much less used than the others.

What if you have stomach problems?

Some people lack something known as “gastric intrinsic factor” (GIF), and this can be a reason why they develop a deficiency even if they appear to be getting enough from their diet.

Only 1% of B12 is absorbed through passive-diffusion, this is why high doses of B12 are needed if they have an issue with GIF and are not absorbing it.

People who have had gastric bypass surgery are recommended to take a sublingual form of b12. As already mentioned, this bypasses the stomach entirely and is absorbed directly into the bloodstream from under the tongue.

What are the best B12 supplements

So now we’ve covered some of the basics, I’ll give you my recommendation on which B12 supplements would be most effective in raising B12 levels, and help you boost your energy.

Sublingual Vitamin B12 (5000 mcg) for maximum absorption (suitable for vegans)

A tasty and tiny sugar-free B12 supplement which is most suitable for those who want a high impact, high dose B12 supplement that will be delivered to the body and nervous system more rapidly than non-sublingual supplements.

You put the supplement under your tongue and let it dissolve and work its magic. But if you want to swallow the supplement, you can do that also!

The lozenges are also cherry flavored and better tasting than many supplements out there.

See reviews and the current price


Sublingual Vitamin B12 (1000 mcg) Chewable Lozenges by Natural Health Goodies (suitable for vegans)

Slow-release, berry-flavored tablets are to be taken under the tongue, where it’s slowly absorbed into the bloodstream.

Each lozenge gives you 1000 mcg of B12, which is considerably less than the previous supplement, but more than enough for most people without any serious absorption issues.

They mention that the supplement also comes in a premium amber glass bottle, this helps maintain a high level of potency and prevents degradation of the B12 supplement.

The supplement is also made in the USA and in an FDA-approved facility.

The supplement does contain sorbitol and Xylitol, which are sweeteners.

See reviews and the current price.


OneNaturals Vitamin B12 Cyanocobalamin (500 mcg) – 100 tablets (suitable for vegans)

This Vitamin B12 is an inexpensive supplement which is suitable for people who are on a tight budget and are not too concerned about getting the maximum absorption of B12.

Even at 500 mcg, it still provides enough B12 to keep people free of a B12 deficiency and gets the job done, but isn’t as tasty as the previous two supplements.

One thing I like about this supplement is the fact that it doesn’t have many other additional ingredients compared to the first two supplements.

Each tablet is to be taken with a meal or as directed by your doctor.

See reviews and current price.


Who is at risk of developing a deficiency?

As already mentioned, there are a few groups of people who are at most risk of developing a B12 deficiency.

  • Vegans and Vegetarians (very high rates of deficiency have been reported in these groups)
  • Elderly people
  • People who drink excessive amounts of alcohol
  • People who have autoimmune diseases
  • People with chronic gastritis
  • Gastric bypass surgery patients
  • Pregnant women
  • Families who are low income and have restrictive diets

Correcting a vitamin B12 deficiency will take some time. The body can store it, and so as you continue to supplement, your liver will store B12 and will be usable by the body even if you were to stop for short periods of time.

If you still have any questions about which form of B12 you should take, then please feel free to message me or comment below! 🙂

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