Vitamin B12
1,000µg Methylcobalamin


120 mini-capsules containing 1,000µg of methylcobalamin (bioactive coenzyme form) each. High-dose and 100% natural with no additives. Vegan, non-GMO, produced in the EU.
  • Bioactive vitamin B12 in the form of methylcobalamin
  • Active coenzyme form with high bioavailability
  • High dose: full 1000µg B12 per capsule
  • Vitamin B12 for homocysteine metabolism, emotional function, immune system, reduction of tiredness and fatigue
  • Vitamin B12 for energy metabolism, the central nervous system, the production of red blood cells and cell division
  • 100% naturally sourced
  • Fibre-rich filler: sprouted buckwheat powder
Customize Vitamin B12<br>1,000<span class="protect-case">µg</span> Methylcobalamin
2 x Methylcobalamin Vitamin B12 1,000µg   + €0.00

* Required Fields

€18.80 €19.80

Delivery : 1–3 business days

Incl. VAT, excl. Shipping

€315.44 / 1kg

Premium Bioactive Ingredients

  • Bioactive vitamin B12 in the form of methylcobalamin
  • Active coenzyme form with high bioavailability
  • Premium B12 ingredient produced in the EU
  • 100% naturally sourced
  • High-dose: 1000µg vitamin B12 per capsule
  • Natural acacia fibre sourced from sustainable and resource-saving cultivation without pesticides

How are we different?

Methylcobalamin is one of the 2 natural, bioactive coenzyme forms of vitamin B12. Methylcobalamin can be used directly by the body without conversion and is characterised by good bioavailability.

Methylcobalamin is the dominant form of vitamin B12 in the blood and cell plasma. Together with folate, methylcobalamin is a critical component of the methylation cycle in the cell plasma, which in turn plays an important role in several bodily processes including cell division and the synthesis of hormones and neurotransmitters. In these reactions, methylcobalamin is also needed for the breakdown of harmful homocysteine.

This coenzyme is said to have an impact on the protection of nerves as well as balanced psychological function. Methylcobalamin is also suitable for daily supplementation.

The only additional ingredient is premium acacia fibre from pesticide-free cultivation, used as a natural bulking agent. In contrast to conventional synthetic fillers such as microcrystalline cellulose, which is mixed with nano-particles, we use a natural, fibre-rich foodstuff. Our acacia fibre comes from climate-neutral, sustainable, resource-conserving, fair cultivation.

For the capsule shells we use custom-made HPMC capsules that, unlike most other HPMC and pullulan capsules on the market, are 100% free from controversial additives such as carrageenans and PEG. We then package this product in environmentally friendly amber glass.


  • Premium active ingredients in their purest form
  • Sourced directly from the world’s best producers
  • Our select raw materials are the basis of all our formulations
  • Complete avoidance of all unnecessary additives and adjuvants
  • Exclusive use of valuable natural ingredients for additives
  • We voluntarily declare all ingredients
  • All extractions performed without the use of chemical solvents
  • Custom production when necessary, in order to achieve the highest possible level of purity
  • Independent laboratory testing available on product pages
  • Raw materials sourced only from premium suppliers who are committed to fair working conditions
  • Amber glass and compostable pouches used for packaging
  • Vegan capsule shells, free from PEG and carrageenans
  • Packaged in the EU according to HACCP, GMP and ISO 22000:2018 standards
  • Stored in non-toxic containers
  • Shipped in mineral oil-free boxes
  • All products guaranteed 100% free from magnesium stearate, silicon dioxide, nanoparticles (no legal opportunism), genetic engineering, artificial colours and flavours, titanium dioxide and added sugar & sweeteners


Vitamin B12 (Cobalamin)

Vitamin B12 performs a variety of important functions in the organism. It can help reduce tiredness and fatigue and maintain a normal energy metabolism. It also contributes to normal functioning of the psyche, immune and nervous systems, it supports the formation of red blood cells and is conducive to normal homocysteine metabolism. In addition, the body needs vitamin B12 cell division. Vitamin B12 acts as a so-called coenzyme in the body. This means that vitamin B12 is necessary for certain enzymes in our body to fulfil their tasks. The related processes are directly dependent on vitamin B12 and cannot take place without the vitamin.

Natural and Bioactive Vitamin B12

Vitamin B12 exists in different chemical forms, each with different functions within the body. The natural forms of vitamin B12 that can be readily absorbed by the body are described as "bioactive coenzymes". Synthetic forms of Vitamin B12 such as cyanocobalamin must be first converted into a natural form by the body in order to be effective, which is why we use naturally bioactive forms of Vitamin B12 that the body can directly use.


Methylcobalamin is one of the two so-called bioactive coenzyme forms of vitamin B12. It is highly bioavailable and can be directly utilised by the body without prior conversion.

Methylcobalamin is the predominant form of vitamin B12 in the bloodstream and cytoplasm. Along with folate, this coenzyme plays an integral role in the methylation cycle, which is important in many bodily processes including cell division and hormone and neurotransmitter synthesis. Methylcobalamin is responsible in these reactions for the breakdown of harmful homocysteine. This coenzyme has also been shown to positively contribute to a sense of well-being as well as the regeneration of nerves.

Health Benefits of Vitamin B12 According to the European Food Safety Authority (EFSA):

Vitamin B12 contributes to:

  • Normal energy-yielding metabolism
  • Normal functioning of the nervous system
  • Normal homocysteine metabolism
  • Normal psychological function
  • Normal red blood cell formation
  • The normal function of the immune system
  • The reduction of tiredness and fatigue
  • Vitamin B12 has a role in the process of cell division


Recommended Dosage

Take 1 capsule (1,000µg B12) daily with 200ml water 30 minutes before a meal.

Daily Requirements

The German Nutrition Society (DGE) recommends a minimum intake of 3µg vitamin B12 per day for adults.

B12 absorption

The human body can only absorb small quantities of vitamin B12 through food and supplements. Only approximately 1-2µg vitamin B12 per dosage can be actively absorbed through the special "intrinsic factor" protein and a further 1% of the dosage is absorbed through passive diffusion. The total supplement intake is estimated based on the combination of these two factors.

According to this calculation, Sunday Natural Methylcobalamin Vitamin B12 1,000µg enables an intake of 10-12µg Vitamin B12 per day.

Food Supplement

Do not exceed the recommended dose. Food supplements cannot replace a balanced and varied diet. Keep out of reach of children.


Store in a cool, dry place away from direct sunlight and heat.


Ingredients: Vitamin B12 (in the form of Methylcobalamin), Acacia Fibre,

Capsules: HPMC Capsule Shells.

Contains: 120 mini capsules

Ingredients per Daily Dose (1 Capsule) % NRV*
Vitamin B12 (in the form of Methylcobalamin) 1,000µg 40,000

* Nutrient Reference Value


All eight essential B vitamins work together. Numerous metabolic processes in the body require them; they can only achieve optimal functionality if each vitamin is in sufficient supply. Therefore, in many cases, it makes sense to supplement these vitamins together..

Product Details

German Pharmaceutical Number (PZN) 17273759
Origin All ingredients from the EU

In-house production in Europe, bottling and encapsulation in the EU according to HACCP, GMP and ISO 22000:2018 standards

Finished products packaged in amber glass jars and stored in non-toxic containers Shipping in mineral oil-free boxes
Capsules Plant-based cellulose (HPMC). Vegan Premium HPMC quality: Free from controversial additives such as carrageenans and PEG
Packaging Amber glass jar to protect against light and oxidation (free from plasticisers and BPA)
To Reuse Remove product label by soaking the jar in warm water for 5 minutes. Glue residue can be removed with dish soap

Laboratory Tests

The purity of our formulas is important to us. This is why we have both our raw ingredients as well as our finished products extensively tested by independent laboratories to confirm purity and active ingredient content. Here, we have provided the results of some of the tests carried out on this product.

Sunday Natural

Our Philosophy

For thousands of years, cultures all over the world have been using medicinal plants and nutritious foods to naturally foster and maintain vitality and good health.

With our products, we try to emulate this ancient wisdom as much as possible.

Consequently, our philosophy is simple: everything we do meets the highest standards of quality and purity; our focus is on organic and natural ingredients.

We follow this philosophy with meticulous care on all levels and down to every last detail.

Learn more

The image could not be loaded.