Vegan Vitamin B12: The Essential Guide

You’ve chosen a vegan lifestyle and are committed to a plant-based diet, but you’re unsure about your Vitamin B12 intake. Don’t worry – we have you covered!

This guide is designed to help you understand the importance of B12, identify vegan-friendly sources, and ensure you’re getting enough for optimal health. We’ll unravel the science behind B12, explore why it’s often a challenge for vegans, and provide practical solutions to incorporate it into your diet.

Read on about the B12 and ensure your vegan lifestyle is as healthy as possible!

Key Takeaways

  • Vitamin B12 is an essential nutrient that plays a critical role in the production of red blood cells, maintenance of the nervous system, and DNA synthesis.
  • The primary sources of vitamin B12 are animal products, making B12 intake a challenge for vegans.
  • Fortified foods like cereals, plant-based milks, tofu, and nutritional yeast offer viable B12 sources for vegans.
  • Vitamin B12 deficiency can lead to serious health issues like anemia, nerve damage, fatigue, and depression.
  • Vegan-friendly B12 supplements come in several forms: Methylcobalamin, Cyanocobalamin, Hydroxocobalamin, and Adenosylcobalamin.
  • The recommended daily intake of vitamin B12 varies based on factors such as age and overall health.
  • Always consult with a healthcare professional before starting any supplements or treatment involving vitamin B12.

Looking for a sign that it’s time to take charge of your diet? This is it. Watch the Food or Health Masterclass—completely free—and discover the 10 surprising nutrition breakthroughs everyone should know. Reserve your free spot here!

What Is Vitamin B12?

You’ve probably heard of vitamin B12. It’s a nutrient that’s essential for your body to function correctly – it is involved in the production of red blood cells, the maintenance of your nervous system, and the synthesis of DNA.

What’s important is that your body can’t produce vitamin B12 on its own – you must obtain it from your diet or supplements.

Unfortunately, if you’re a vegan, getting enough vitamin B12 can be challenging as it’s primarily found in animal products. However, it’s not impossible. Several plant foods are fortified with vitamin B12, and B12 supplements are also an option.

Understanding what vitamin B12 is and how it works in your body is the first step towards ensuring you’re getting enough of this crucial nutrient.

The Problem of Deficiency

Vitamin B12 Deficiency Symptoms Chart


Now that you’re familiar with what vitamin B12 is and its pivotal role in your body, let’s turn our attention to the issue of deficiency. As the human body can’t really manufacture vitamin B12 on its own, not getting enough from your diet can lead to serious medical consequences.

Side Note: This is the best free video introduction I’ve found on adopting a plant-based diet—the right way. You’ll learn how to lower your risk of cancer, heart disease, type-2 diabetes, Alzheimer’s, and obesity—all with plants. Watch the free Masterclass here.

Inadequate B12 levels can lead to anemia, a condition where your body doesn’t have enough healthy red blood cells to carry oxygen to your tissues. This can make you feel tired and weak, cause walking issues, and even lead to vision and thinking impairments.

Long-term B12 deficiency can also result in nerve damage, which may cause tingling or numbness in your hands and feet and even depression.

To help you better understand the risks connected to inadequate B12 levels, here’s a short table summarizing the complex roles of B12:

Healthy Vitamin B12 LevelsEffects of B12 Deficiency
Healthy nerve endingsNerve damage, tingling, or numbness
Proper creation of DNACell abnormalities
Optimal red and white blood cell levelAnemia, fatigue, weakness
Metabolism boostSluggish metabolism, weight gain
Optimal mental stateDepression, mood swings

Keeping your B12 levels optimal by knowing when to take the vitamin is crucial for your overall health, particularly if you’re following a vegan diet.

Common Sources of Vitamin B12

Mushroom and garlic beside a coconut shell containing white liquid in it

As a vegan, you can’t really find an unprocessed source of B12 since microorganisms make it.

Thankfully, numerous plant-based options are fortified with B12. Cereals, plant-based milks, tofu, and yeast spreads like Marmite are common examples.

Another option is B12-fortified nutritional yeast, a staple in many vegan diets due to its cheese-like flavor.

It’s also important to remember that cooking and storage methods can affect the B12 content of these products.

For example, microwaving your vegetarian and vegan fortified food is a surefire way to deprive yourself of B12 – research suggests that microwaves degrade up to 40% of this vitamin in heated food.

B12 supplements are another reliable source. However, bear in mind that the absorption of B12 can be tricky, so it’s recommended to take more than the minimum suggested daily value.

Lastly, there’s the option of B12 injections, which are often recommended for individuals who’ve difficulty absorbing the vitamin from food or supplements. However, in this case, consulting a healthcare professional before starting any treatment is always advisable.

Vegan-Friendly B12 Supplements

Navigating the world of vegan B12 supplements can feel overwhelming, but it’s crucial for maintaining your health. As a vegan, your diet naturally excludes animal products, which are the primary sources of B12. Therefore, B12 supplements are essential to prevent deficiencies.

Does nutrition ever seem confusing? It doesn’t have to be. Learn how simple (and delicious) healthy eating can be in the FREE Food for Health Masterclass. This 1-hour presentation makes things clear—finally. Click here to reserve your free spot!

Let’s demystify the options out there:

  • Methylcobalamin: This is a natural form of B12 that’s easily absorbed and retained by the body. It’s a popular choice for vegans as it’s derived from bacterial fermentation, making it animal product-free.
  • Cyanocobalamin: Another option, this synthetic version of B12 is not derived from animals and is less expensive than Methylcobalamin. However, it requires the body to convert it into a usable form, which could be an issue for some people with specific genetic makeups.
  • Hydroxocobalamin: This is a non-active form of B12 commonly used in injections. While it’s generally safe for vegans, it’s always best to double-check the source if opting for this version.
  • Adenosylcobalamin: A less common form of B12, Adenosylcobalamin is often combined with other types of B12 in supplements.

Here’s a more detailed comparison between these specific vitamin B12 types:

Types of Vitamin B12 Compared


How Much Vitamin B12 Do Vegans Need?

Person holding white pills in hand

The amount of vitamin B12 needed can vary based on factors such as age, overall health, and even how much fortified food you consume.

However, some generalizations can be made – the National Institutes of Health suggests that adults consume around 2.4 micrograms of B12 per day. Kids aged 8 or less, on the other hand, should require no more than 1.2 micrograms of vitamin B12 per day.

Vegans who are currently expecting should consume more than the standard adult recommendation, around 2.6 micrograms of B12 per day. Similarly, breastfeeding vegans are advised to take about 2.8 micrograms daily.

For your convenience, here is the full chart on recommended daily B12 intake:

Life StageRecommended Daily B12 Amount
Birth to 6 months0.4 mcg
Infants 7–12 months0.5 mcg
Children 1–3 years0.9 mcg
Children 4–8 years1.2 mcg
Children 9–13 years1.8 mcg
Teens 14–18 years2.4 mcg
Adults2.4 mcg
Pregnant teens and women2.6 mcg
Breastfeeding teens and women2.8 mcg


Maintaining a vegan lifestyle doesn’t have to mean compromising on essential nutrients like vitamin B12. With a little bit of planning and understanding, you can ensure your body gets the right amount of this crucial vitamin.

Whether through fortified foods, supplements, or injections, there are plenty of options available to suit your preferences and lifestyle.

Remember, while a vegan diet is an excellent way to support animal welfare and environmental sustainability, it’s vital to prioritize your health as well. With the tips provided in this guide, we’re confident you’ll be able to manage your B12 intake as a vegan effectively.

Two More Recommendations for Your Plant-Based Journey

1. This is the best free video training I’ve found on plant-based nutrition. You’ll learn how to reduce your risk of cancer, heart disease, type 2 diabetes, Alzheimer’s, and obesity—all with plant-based food. Watch the free “Food for Health Masterclass” here.

2. This is the best vegan multivitamin I’ve found in my 14 years of being vegan. It has vitamin B12, vitamin D, omega-3—and nothing else. Translation: It only has the nutrients vegans are actually low in. Read my full review of Future Kind’s multivitamin here (with 10% discount).