Vitamin B12

Other names Cobalamin

This nootropic has no healthy human placebo-controlled studies that meet our inclusion criteria. Negative side effects can occur if used carelessly, so make sure you’re aware of the risks of Vitamin B12.

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Risks

The legality and side effects of Vitamin B12

You should always consider the risks of a nootropic before you use it.

Side effects

Interactions

Supplements and drugs can interact with Vitamin B12 to increase or decrease the positive or negative effects you experience. If you are already using any supplements or drugs, speak with your trusted medical professional before you experiment with Vitamin B12. To learn more about the potential interactions between Vitamin B12 and other substances, use interaction-checker.

Legality

Is your country not included? Learn how to find out if Vitamin B12 is legal in your country.

Legality Disclaimer

The contents herein are not legal advice or a substitute for legal counsel. information is not intended to create, and receipt of it does not constitute, an attorney-client relationship. While we have done our best to be as accurate as possible in the information we convey to you about the legality of nootropics, there is a risk for inaccuracies and errors. If you’re uncertain about the legality of any of your actions, contact a legal counsel or your local authorities governing the legality of various substances you may want to use/import/travel with.

FAQ

Frequently asked questions about Vitamin B12

How much vitamin B12 should you use?

The Dietary Reference Intakes for Vitamins is a good source for understanding how much you need and how much vitamin B12 you can safely consume every day for the rest of your life:

How much you need
How much you can safely take every day for the rest of your life

It is important to note that these levels regard all sources of vitamin B12, including food sources, supplements, and water.

We recommend that you experiment within the range between how much you need and how much you can safely take every day for the rest of your life. This will ensure self-experiments with vitamin B12 that are likely very safe and hopefully enable you to get the most out of it to help you feel and perform at your best.

What time of day should you take vitamin B12?

There is no data on what the optimal time of day for use of vitamin B12 is. There is no evidence that vitamin B12 impairs sleep if taken before bed-time.

Which foods are rich in vitamin B12?

The top 10 foods highest in vitamin B12 are [3]:

Clams (98.9μg B12/100g clams)
Fortified Cereals (21μg/100g)
King Crab (11.5μg/100g)
Tuna (10.9μg/100g)
Beef (7.5μg/100g)
Swiss cheese (3.1μg/100g)
Fortified tofu (1.5μg/100g)
Fortified soymilk (1.2μg/100g)
Eggs (1.1μg/100g)
Low-fat milk (0.5μg/100g)

Studies

Studies conducted on the effects of Vitamin B12 in healthy humans

No placebo-controlled trials on healthy humans that meet our inclusion criteria have been conducted on Vitamin B12.

Last updated Saturday, June 10, 2023