Vitamin B12 Drops


High-dose vitamin B12 drops with methylcobalamin; 1,000µg per drop. Natural and bioactive form of vitamin B12. Highly pure water-based formula with plant-based glycrein. Only 3 ingredients and no unnecessary additives or preservatives. In glass bottle with pipette. 300 drops
  • Bioactive vitamin B12 in the form of methylcobalamin
  • 1000µg methylcobalamin per drop
  • Drops: ideal for direct absorption in the mouth (sublingual administration)
  • Quick absorption into the bloodstream, circumventing absorption difficulties in the intestines
  • Precise administration with a glass dropper
  • 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

Delivery : 1–3 business days

Incl. VAT, excl. Shipping

€772.02 / 1kg
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Incl. VAT, excl. Shipping

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Premium Bioactive Ingredients

  • Bioactive vitamin B12 as methylcobalamin
  • Premium B12 active ingredient sourced from the EU
  • Water-based formula with plant-based glycerin as a stabilizer
  • 100% sourced from natural origins
  • Only 3 ingredients
  • Liquid vitamin B12: Perfect for direct absorption through the oral mucosa (sublingual absorption)
  • Convenient dosage with a glass dropper pipette

How are we different?

Methylcobalamin is one of the two natural bioactive coenzymes of vitamin B12. It can be directly utilized by the body without conversion and is known for its excellent absorbability.

Methylcobalamin is the dominant form of vitamin B12 in the blood and cellular plasma. Together with folic acid, it plays a crucial role in the cellular plasma as an important component of the methylation cycle, which has far-reaching implications for various vital bodily processes such as cell division, hormone synthesis, and neurotransmitter production. Methylcobalamin also plays a critical role in the breakdown of harmful homocysteine.

Methylcobalamin is believed to have a special effect on nerve protection and maintaining a balanced psyche, making it suitable for general daily supplementation as well.

The liquid dropper form offers the advantage of direct absorption through the oral mucosa via passive diffusion. This bypasses any intestinal absorption issues and significantly enhances bioavailability. By this method, vitamin B12 enters the bloodstream directly without having to pass through the liver, as is the case with absorption through the intestine.

Our vitamin B12 drops are completely free from commonly used questionable preservatives such as potassium sorbate.


  • 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)

Hydroxocobalamin is a natural form of vitamin B12 found in the human body and many food products. This vitamin has a particularly high bioavailability, a long-lasting repository effect, and detoxification properties.

Hydroxocobalamin can be easily converted into active B12 coenzymes, which makes it a particularly good form of B12 with which to supply the body. A large percentage of the vitamin B12 in the human body is stored in the form of hydroxocobalamin.

Natural, bioactive Vitamin B12

Vitamin B12 (Cobalamin) exists in various chemical forms, each with different roles in the body. The natural forms of vitamin B12 that are directly active in the body are referred to as "bioactive coenzymes." Synthetic forms of vitamin B12, such as the commonly used cyanocobalamin, do not have direct vitamin activity and must be converted by the body into a usable form.


Methylcobalamin is one of the two natural bioactive coenzymes of vitamin B12. It can be directly utilized by the body without conversion and is known for its excellent bioavailability.

Methylcobalamin is the predominant form of vitamin B12 in the blood and cell plasma. Along with folic acid, it plays a role in the cell plasma as part of the methylation cycle, which is important for numerous central physiological processes such as cell division and the synthesis of hormones and neurotransmitters. Methylcobalamin is also involved in the breakdown of homocysteine. It supports healthy nerve metabolism and contributes to normal psychological function.

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

Vitamin B12 contributes to:

  • Normal energy metabolism
  • Normal nervous system functioning
  • Normal homocysteine metabolism
  • Normal cognitive function
  • Normal erythropoiesis
  • Normal immune system functioning
  • The reduction of tiredness and fatigue
  • Cell division


Recommended Dosage

Place one drop (1,000µg vitamin B12) under the tongue daily. Shake well before use.

For optimal sublingual administration, place a drop under the tongue or on the inside of the cheek. Avoid swallowing for as long as possible to allow the drops to be absorbed. 

Daily Requirement

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

B12 Absorption

The body only absorbs a fraction of the vitamin B12 from food and supplements. Typically, only about 1-2 µg of vitamin B12 can be actively absorbed through the specialised protein called "intrinsic factor," and an additional 1% of the dose can be passively absorbed through concentration differences in the intestinal mucosa (passive diffusion). Therefore, the total estimated absorption is a combination of these two factors. By spacing out the intake, the active absorption through the Intrinsic Factor can be utilised multiple times.

According to this formula, Sunday Natural Vitamin B12 Drops Methylcobalamin 1000µg would result in an estimated absorption of 10-12µg of vitamin B12 per drop.

Food Supplement

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


Store vitamin B12 at room temperature (between 20 and 25°C).


Distilled Water, Glycerin, Vitamin B12 (in the form of Methylcobalamin).

Ingredients per Daily Dose (1 Drop / 31mg)
% NRV*
Vitamin B12 (as methylcobalamin) 1.000µg 40.000%

* In accordance with EU guidelines regarding the nutritional labelling of food products


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) 18450494
Origin All ingredients are from the EU.
Production 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
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

Sunday 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.

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