Vitamin C Powder
Calcium Ascorbate


Buffered, acid-free vitamin C in the form of calcium ascorbate. Particularly easy on the stomach. Powder form allows for flexible dosing. Vegan, no additives. 2x500g
  • Buffered, acid-free vitamin C in the form of calcium ascorbate
  • In powder form to allow flexible dosing
  • 1,000mg of calcium ascorbate powder per scoop, of which 900mg vitamin C, 100mg calcium
  • Ideal for those with sensitive stomachs
  • Vitamin C supports energy metabolism, the immune and nervous systems and normal mental function
  • Protects cells against oxidative stress and increases iron absorption
  • Contributes to normal collagen formation (blood vessels, bones, cartilage, teeth, gums, skin)
Customize Vitamin C Powder<br>Calcium Ascorbate
2 x Vitamin C Powder Calcium Ascorbate   + €0.00

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€32.11 €33.80


Delivery : 1–3 business days

Incl. VAT, excl. Shipping

€32.11 / 1kg

Premium Bioactive Ingredients

  • Easy on the stomach: buffered, acid-free vitamin C in the form of calcium ascorbate
  • Higher bioavailability and longer retention time
  • High ratio of vitamin C: 90% vitamin C, 10% calcium
  • 1,000mg of calcium ascorbate powder per scoop, of which 900mg vitamin C, 100mg calcium

How are we different?

Our buffered vitamin C, in the form of ultra-pure calcium ascorbate, is completely acid free and very easy on the stomach, making it especially suitable for those with sensitive stomachs. Thanks to the presence of (alkaline) calcium, calcium ascorbate has an almost neutral pH value despite its high concentration of vitamin C. Moreover, the calcium bond increases the bioavailability and retention of vitamin C; in many respects, calcium ascorbate is an ideal active ingredient for vitamin C preparations.

Calcium ascorbate is a 100% pure active ingredient without additives. Notably, there are no residues of solvents such as methanol (an otherwise common occurence in vitamin C products).

We use environmentally friendly, resealable pouches made from starch, cellulose and paper for the packaging of this product. They are 100% biodegradable and compostable.


  • 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 C is involved in numerous redox reactions as an antioxidant and cofactor, thus influencing numerous processes in the human body, such as energy metabolism and the immune system, and providing antioxidative protection to cells. It is also involved in the formation of collagen, the structural protein found in skin, cartilage, bones and blood vessels, as well as in the synthesis of hormones.

High concentrations of vitamin C are found naturally in fresh fruits, vegetables and berries such as camu camu, sea buckthorn berry, acerola cherry, rosehip, black currant, kale, parsley, kiwis and citrus fruits, among others.

The role of vitamin C in the body remains an active area of research. Almost every year, new mechanisms of action are discovered for this fascinating vitamin. The following statements regarding vitamin C are provided by the EU:

Health Benefits of Vitamin C

According to the European Food Safety Authority (EFSA), Vitamin C contributes to:

  • The reduction of tiredness and fatigue
  • Normal mental function
  • The regeneration of the reduced form of vitamin E
  • Normal energy metabolism
  • Normal immune system function
  • The normal function of the nervous system
  • Protecting cells against oxidative stress
  • Normal collagen formation for normal blood vessel function
  • Normal collagen formation for normal bone function
  • Normal collagen formation for normal cartilage function
  • Normal collagen formation for normal dental function
  • Normal collagen formation for normal gum function
  • Normal collagen formation for normal skin function
  • Increasing iron absorption
  • Maintaining normal immune system function both during and after intense physical activity


Recommended Dosage

Take 1 scoop (900mg vitamin C + 100mg calcium) daily dissolved in 200ml water.

Daily Requirements

The German Nutrition Society (DGE) recommends an intake of 100mg vitamin C per day. The recommended daily intake according to the European Food Safety Authority (EFSA) is 80mg.

Vitamin C should be divided into several portions throughout the day, as the body can only absorb a limited amount into its tissues at once before they reach saturation and because blood levels of the vitamin drop relatively soon after ingestion.

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: Calcium ascorbate.
Contains: 500g

Ingredients/Scoop % NRV*
Vitamin C 900mg 1,125%
Calcium 100mg 12.5%

* Nutrient Reference Value

Per scoop: 1,000mg calcium ascorbate
Per pouch: 500g calcium ascorbate

Product Details

German Pharmaceutical Number (PZN) 16826245
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 environmentally friendly, compostable pouches and stored in non-toxic containers
Shipping in mineral oil-free boxes
Packaging 100% biodegradable and compostable (starch, cellulose, paper)

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.

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