Ester C 1000 mg by Vitals

Ester-C and vitamin C metabolism

After absorption, vitamin C converts into metabolites. These are intermediate or end products. Threonic acid appears to be the main metabolite.

Ester-C® is a patented vitamin C formula based on calcium ascorbate. It is partially metabolized. This process provides natural metabolites, including threonic acid.

These metabolites support the absorption and use of vitamin C in the body. Threonic acid may also help release stored vitamin C.

Key benefits

Studies show advantages compared to ascorbic acid:

• Absorbs twice as fast and remains twice as long in the body
• Leads to four times lower oxalate excretion in urine
• Reduces urinary ascorbate loss by six times
• Improves uptake in white blood cells and stays longer present
• Shows good tolerance, even at high intake levels
• Does not harm tooth enamel

Ester-C® is produced in the United States by The Ester C Company using a patented process.

Bioflavonoids

Bioflavonoids are water-soluble compounds found in fresh fruit and vegetables. They act together with vitamin C.

They support the bioavailability of vitamin C in the body.

Physiological roles

Vitamin C supports the immune system, especially during physical stress or cold conditions. It also plays a role in many body processes.

It acts as a water-soluble antioxidant and neutralizes free radicals. It is part of a network of antioxidants from the body and diet.

This system helps protect DNA, proteins, and fats from oxidative damage. It supports the maintenance of healthy cells and tissues.

Collagen and enzymes

Vitamin C serves as a cofactor for enzymes that produce collagen. Collagen is a key structural component of the body.

Normal collagen formation supports bones, cartilage, gums, skin, tendons, and blood vessels.

Nervous system and energy

Vitamin C supports enzymes that convert dopamine into noradrenaline and adrenaline. These act as neurotransmitters and hormones.

This contributes to normal nervous system function and psychological function.

It also supports enzymes involved in carnitine production. Carnitine helps transport fatty acids into mitochondria for energy production.

This process supports energy levels and may help reduce fatigue.

Iron absorption and recycling

Vitamin C improves the absorption of non-heme iron from food. This form is present in both plant and animal products.

It does not affect heme iron absorption, which is only found in animal products.

Most dietary iron is non-heme iron. Vitamin C also helps regenerate vitamin E into its active form.

Dietary requirement

The human body cannot produce vitamin C. Intake depends fully on diet.

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Patented ingredients

Ester-C® is a registered trademark of The Ester-C Company.

Other information

Dietary supplement Combination supplement

Distributor Vitals Voedingssupplementen BV
Pieter Lieftinckweg 29
1505 HX Zaandam

Last page change
12 april 2026