Vitamin C

Viva Saudável's Vitamin C collection includes supplements from brands like Thorne Research, NOW Foods, Designs for Health, Allergy Research Group, Zeinpharma, Quicksilver Nutrition, Kirkman, Ecogenetics, Weider, and Good n'Care. You can find ascorbic acid, buffered forms (calcium, magnesium, and potassium ascorbates), liposomal vitamin C, formulas with bioflavonoids and rosehip, in capsules, tablets, powder, and gummies, with doses ranging from 250 to 1000 mg.

What Vitamin C contributes to

Vitamin C, or ascorbic acid, is a water-soluble vitamin that the human body does not synthesize – unlike most mammals – and therefore must be obtained from food. It contributes to the normal formation of collagen for the normal function of blood vessels, bones, cartilage, gums, skin, and teeth; to the normal function of the immune system and the nervous system; to normal psychological function; to normal energy metabolism; to the reduction of tiredness and fatigue; to the protection of cells from undesirable oxidation; to the regeneration of the reduced form of vitamin E; and increases iron absorption. There is also a specific claim for the maintenance of the normal function of the immune system during and after intense physical exercise, with an additional 200 mg daily.

Forms, doses, and how to choose

The nutrient reference value is 80 mg daily. Buffered forms – ascorbates linked to calcium, magnesium, or potassium – have a less acidic pH than pure ascorbic acid, which some people prefer. Liposomal vitamin C is encapsulated in lipid vesicles. Powder allows for precise dose adjustment and has a lower cost per gram; gummies are practical for children, but check the sugar content. Being water-soluble, the excess is eliminated through urine, although very high doses can cause gastrointestinal discomfort in sensitive individuals.

19 products

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Design for Health
Stellar C™ 90 Cap Designs for Health
45,00€
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C-Time C/Roseira Brava 1000mg 60 caps Good N'Care - Viva Saudável
Good n'Care
C-Time Wild Rosehip 1000mg 60 caps Good N'Care
13,50€ 13,98€
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-3%
C-Imune 30 Saquetas - Viva Saudável
M.J.S Med
C-Imune 30 Sachets
29,90€
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Frasco de Vitamina C Lipossomal Quicksilver Scientific com conta-gotas e doseador sobre fundo neutro, suplemento líquido para apoio imunitário
LIPOSOMAL VITAMIN C LIQ. 120 ML QUICKSILVER - Viva Saudável
Quicksilver Nutrition
Liposomal Vitamin C Liquid 120 ml Quicksilver
49,00€
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Vitamin C 500mg
Zeinpharma
Vitamin C 500mg
17,86€
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Vitamina C PH Neutro 500mg
Vitamina C PH Neutro 500mg
Zeinpharma
Vitamin C pH Neutral 500mg
21,58€
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Vitamina C 1000mg
Vitamina C 1000mg
Zeinpharma
Vitamin C 1000mg
28,89€
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Vitamina C 1000mg effervescent - Viva Saudável
Vitamina C 1000mg effervescent - Viva Saudável
Zeinpharma
Vitamin C 1000mg effervescent
5,85€
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4.0/5 — nota média de 27 avaliações de clientes aos produtos desta página

How to choose your vitamin C

Vitamin C contributes to the normal function of the immune system, the reduction of tiredness and fatigue, and normal collagen formation. Among the products on this page, what changes is the dosage, the chemical form, and the format.

1. The dose per intake

The reference value is 80 mg per day, and the supplements here range from 250 to 1000 mg. As it is water-soluble, the excess is eliminated, but high doses taken at once can cause intestinal discomfort for sensitive individuals. Splitting the dose almost always solves this.

2. The form

  • Ascorbic acid: the pure form and the most economical per gram.
  • Buffered: calcium, magnesium, or potassium ascorbates, with a less acidic pH.
  • Liposomal: enclosed in phospholipid vesicles; it is a formulation technology.
  • Time-release: distributes the release over several hours.
  • With bioflavonoids or rose hip: formulas that combine plant-based ingredients with the vitamin.

3. The format

Powder allows you to adjust the dose and usually has the lowest cost per gram. Capsules and tablets are convenient. Effervescents and sachets dissolve in water. Gummies are easy to take, but check the sugar content.

4. With iron and exercise

Vitamin C increases iron absorption, especially from plant sources, and is therefore often taken together. For those who engage in intense physical exercise, there is a specific recommendation: 200 mg per day in addition to the reference value contributes to maintaining the normal function of the immune system during and after such exercise.

5. When to be careful

If you have a history of kidney stones, kidney disease, or hemochromatosis, speak to your doctor before taking high doses of vitamin C. And add up what you are already getting from your multivitamin before adding more.

Perguntas frequentes

Para que serve a vitamina C?
A vitamina C contribui para o funcionamento normal do sistema imunitário e do sistema nervoso, para a formação normal de colagénio para o funcionamento normal dos vasos sanguíneos, ossos, cartilagens, gengivas, pele e dentes, para a redução do cansaço e da fadiga, para um metabolismo energético normal, para uma função psicológica normal e para a proteção das células contra as oxidações indesejáveis. Aumenta ainda a absorção de ferro.
Que dose devo escolher?
O valor de referência é de 80 mg por dia. Os suplementos desta página vão de 250 a 1000 mg por toma. Sendo hidrossolúvel, o excedente é eliminado pela urina, mas doses muito altas de uma só vez podem causar desconforto intestinal: nesse caso, divida a toma ou escolha uma forma tamponada.
Ácido ascórbico, tamponada ou lipossomal?
O ácido ascórbico é a forma pura e mais ácida. As tamponadas são ascorbatos ligados a cálcio, magnésio ou potássio, com pH menos ácido, e são muitas vezes escolhidas por quem tem estômago sensível. A lipossomal vem envolvida em vesículas de fosfolípidos: é uma tecnologia de formulação, não outra vitamina.
Porque se toma vitamina C com o ferro?
Porque a vitamina C aumenta a absorção de ferro, sobretudo do ferro de origem vegetal. Por isso, muitos suplementos de ferro já a incluem na fórmula, e quem toma os dois em separado costuma tomá-los na mesma altura.
E para quem faz exercício intenso?
Há uma indicação específica para esse caso: 200 mg de vitamina C por dia, para além do valor de referência, contribuem para a manutenção do funcionamento normal do sistema imunitário durante e após exercício físico intenso. Aplica-se a quem faz esforços prolongados, como corridas de longa distância.
O que são os bioflavonoides e a rosa mosqueta nas fórmulas?
São ingredientes de origem vegetal que acompanham a vitamina C em várias fórmulas: os bioflavonoides são compostos presentes nos citrinos e a rosa mosqueta é o fruto da roseira brava, que contém vitamina C naturalmente. Quando escolher, veja quantos mg de vitamina C a fórmula fornece por toma.

Veja também

Food supplements are not a substitute for a varied and balanced diet or a healthy lifestyle. If you are pregnant or breastfeeding, consult your doctor before taking this supplement. Not recommended in case of hypersensitivity or allergy to any of the ingredients in the formulation, or when interactions between another product and any of its constituents are described. The recommended daily dose should not be exceeded. Keep out of the reach and sight of children. Store in a cool, dry place, away from light.