Ingredient Deep Dive · Vitamin C (L-Ascorbic Acid)

Vitamin C

The essential antioxidant vitamin for daily immune defence.

L-ascorbic acid is a form of vitamin C. Vitamin C contributes to normal immune function, normal collagen formation and increased iron absorption.

Vitamin C
Vitamin C

What is Vitamin C?

Vitamin C (L-ascorbic acid) is a water-soluble vitamin that the body cannot produce or store, making regular dietary intake essential. It functions as a vital cofactor for numerous enzymatic reactions, most notably collagen synthesis, and serves as one of the body's most important water-soluble antioxidants. Every cell in the body depends on vitamin C for its basic metabolic processes, from energy production to tissue maintenance.

Among all water-soluble vitamins, vitamin C has the broadest reach across physiological systems. It supports the structural integrity of blood vessels, skin, bones, and connective tissue through collagen formation, enhances immune cell function, facilitates iron absorption from plant-based foods, and helps regenerate other antioxidants such as vitamin E. This versatility makes vitamin C one of the most comprehensively studied nutrients in the world.

EFSA-approved health benefits

The European Food Safety Authority (EFSA) has confirmed that vitamin C:

  • contributes to normal collagen formation for the normal function of skin, bones, cartilage, gums and teeth
  • contributes to the normal function of the immune system
  • contributes to normal energy-yielding metabolism
  • contributes to the protection of cells from oxidative stress
  • contributes to the reduction of tiredness and fatigue
  • contributes to the normal functioning of the nervous system
  • increases iron absorption
  • contributes to the regeneration of the reduced form of vitamin E

Why we use Vitamin C in Nutri-Leaf formulas

Nutri-Leaf uses pure L-ascorbic acid — the gold standard bioactive form of vitamin C with the strongest evidence base for absorption and efficacy. Our Vitamin C 1000mg formula contains just two ingredients: 1000mg of L-ascorbic acid and the plant-based HPMC capsule. This minimal formulation reflects our commitment to transparent nutrition: you should know exactly what you are taking.

Products containing Vitamin C

The Nutri-Leaf products that feature vitamin C are Vitamin C 1000mg (our dedicated high-potency formula providing 1250% NRV per capsule) and Immune Complex, where vitamin C from rose hip works alongside zinc, selenium, echinacea, and ginger for comprehensive immune support.

Explore how vitamin C contributes to collagen formation and immune health on our Beauty from Within and Immune Support health guides. Learn more about our approach to nutrient quality on the Ingredient Philosophy page.

Food supplements are not a substitute for a balanced and varied diet and a healthy lifestyle.

What makes vitamin C essential in your daily nutrition.

Ingredient profile

What makes vitamin C essential in your daily nutrition.

  • What it is

    Vitamin C (L-ascorbic acid) is a water-soluble vitamin that the body cannot produce or store, making regular dietary intake essential. It is the sole active ingredient of Nutri-Leaf Vitamin C 1000mg.

  • Why we use it

    Every ingredient in our formulas serves a specific nutritional purpose. What you see on the label is exactly what’s in the capsule.

  • German quality sourcing

    All ingredients are sourced to meet German and EU pharmacopoeia quality standards, then manufactured into finished supplements in Germany by an FSSC 22000 certified food-supplement producer.

  • Benefits & research

  • Role in the body

    Vitamin C contributes to normal collagen formation for the normal function of skin, bones and gums, to the normal function of the immune system and to the protection of cells from oxidative stress.

  • Approved health claims

    According to the European Food Safety Authority (EFSA), vitamin C contributes to normal collagen formation for the normal function of skin, bones, gums and blood vessels, normal energy-yielding metabolism, the normal functioning of the nervous system, the normal function of the immune system, normal iron absorption and the reduction of tiredness and fatigue.

  • EU quality standards

    Nutrient Reference Values (NRVs) are set by EU Regulation 1169/2011. Our formulas are designed to provide meaningful percentages of these reference values per daily serving.

Nutri-Leaf formulas featuring this ingredient

Supplements containing Vitamin C (L-Ascorbic Acid).

Vitamin C 1000mg · Immune Complex · Skin Hair & Nails

Related reading

Guides about ingredients and nutrition.

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FSSC 22000-certified producer
Plant-based HPMC capsules
Made in Germany
Frequently asked questions

Your questions about Vitamin C (L-Ascorbic Acid) and quality.

Discover German quality supplements

Discover pure vitamin C — made simple, made in Germany.

manufactured in Germany by an FSSC 22000 certified producer. Plant-based HPMC capsules. Free shipping from €20 across the EU.

Free EU shipping from €20 · FSSC 22000-certified producer · Made in Germany · Plant-based capsules · Clean formulas