Immune System

Viva Saudável's Immune System collection brings together supplements from brands such as Thorne Research, NOW Foods, Zeinpharma, Soria Natural, Nutergia, Ecogenetics, Solaray, Lamberts, Hifas da Terra, and Good n'Care. You'll find vitamin C, vitamin D3, zinc, selenium, vitamin A, multi-nutrient complexes, plant extracts, and live cultures, in capsules, tablets, powder, and liquid formats.

What nutrients can contribute to Immunity

vitamin C, vitamin D, vitamin A, vitamin B6, vitamin B12, folic acid, zinc, selenium, copper, and iron. Vitamin C also has a specific claim for the maintenance of the normal functioning of the immune system during and after intense physical exercise, with an additional 200 mg daily. Vitamin C, vitamin E, selenium, zinc, copper, and manganese contribute to the protection of cells from undesirable oxidation.

How to choose

Compare the dose per serving and the percentage of the nutrient reference value (NRV). In combined formulas, check that nutrients with an immune claim are present in significant amounts and not just in trace amounts. The collection also includes products with curcumin, mushrooms, plant extracts, propolis, and live cultures — Do not exceed the daily dose indicated on the label. If you are taking medication, are pregnant, or breastfeeding, talk to your doctor before supplementing.

377 products

Immune System Biotix Quest 30 cápsulas – vitamina D, zinco, selénio, cobre, beta-glucanos e lactobacilos
Quest
Immune Biotix 30 Capsules Quest
Price: 44,22€
30 doses · 1,47€ per dose
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Mega B Complex Quest 30 comprimidos – complexo B com vitamina C
Quest
Mega B Complex (B + C) 30 Tablets Quest
Price: 26,55€
30 doses · 0,88€ per dose
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Zinco Sinérgico Quest 30 comprimidos – zinco quelatado com cobre
Quest
Synergistic Zinc 30 Tablets Quest
Price: 8,81€
30 doses · 0,29€ per dose
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Vitamina C 1000 mg Timed Release Quest 60+30 comprimidos – libertação gradual com bioflavonoides
Quest
Vitamin C 1000 Timed Release 60+30 Tablets Quest
Price: 29,52€
90 doses · 0,32€ per dose
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Gomas ómega-3 Möller's sabor cola para crianças, 36 unidades
Gomas ómega-3 Möller's sabor cola para crianças, 36 unidades – informação nutricional
Moller's
Möller's Omega-3 Cola Kids Gummies 36 units
Price: 16,66€
18 doses · 0,92€ per dose
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Gomas ómega-3 Möller's sabor morango para crianças, 36 unidades
Gomas ómega-3 Möller's sabor morango para crianças, 36 unidades – informação nutricional
Moller's
Möller's Omega-3 Strawberry Gummies Kids 36 units
Price: 16,66€
18 doses · 0,92€ per dose
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Vitamina D3 400 UI 120 Cápsulas Moles Solaray – Viva Saudável
Solaray
Vitamin D3 10 µg (400 IU) 120 Softgels Solaray
Price: 14,12€
120 doses · 0,11€ per dose
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Super D3 Vitamina D3 4000 UI 100 Cápsulas Moles Solaray – Viva Saudável
Solaray
Super D3 Vitamin D3 100 µg (4000 IU) 100 Softgels Solaray
Price: 18,25€
100 doses · 0,18€ per dose
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Vitamina C 500 mg Mastigável Cereja 100 Comprimidos Solaray – Viva Saudável
Solaray
Vitamin C 500 mg 100 Chewable Tablets Cherry Flavor Solaray
Price: 26,55€
100 doses · 0,26€ per dose
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Vitamina C 1000 mg Ação Retardada 30 Comprimidos Solaray – Viva Saudável
Solaray
Vitamin C 1000 mg Sustained Release 30 Tablets Solaray
Price: 14,94€
30 doses · 0,49€ per dose
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Vitamina C 485 mg Mastigável Laranja 100 Comprimidos Solaray – Viva Saudável
Solaray
Vitamin C 485 mg 100 Chewable Tablets Orange Flavor Solaray
Price: 28,21€
100 doses · 0,28€ per dose
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Vitamina C 1000 mg Ação Retardada 100 Comprimidos Solaray – Viva Saudável
Solaray
Vitamin C 1000 mg Time-Release 100 Tablets Solaray
Price: 24,89€
100 doses · 0,24€ per dose
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Vitamina C Lipossomal 500 mg 30 Cápsulas Vegetais Solaray – Viva Saudável
Solaray
Solaray Liposomal Vitamin C 500 mg 30 Vegetarian Capsules
Price: 24,89€
30 doses · 0,82€ per dose
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Reacta-C 500 mg 60 Cápsulas Vegetais Solaray – Viva Saudável
Solaray
Reacta-C 500 mg 60 Vegetarian Capsules Solaray
Price: 20,75€
60 doses · 0,34€ per dose
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Vitamina C 1000 mg + D3 2000 UI 60 Cápsulas Vegetais Solaray – Viva Saudável
Solaray
Vitamin C 1000 mg + D3 2000 IU 60 VegCaps Solaray
Price: 21,57€
60 doses · 0,35€ per dose
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Vitamina C Lipossomal 500 mg 100 Cápsulas Vegetais Solaray – Viva Saudável
Solaray
Solaray Liposomal Vitamin C 500 mg 100 Vegetarian Capsules
Price: 48,97€
100 doses · 0,48€ per dose
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Perguntas frequentes

What are the best supplements to boost the immune system?
The most studied nutrients for immune support are vitamin C (an antioxidant and stimulant for white blood cell production), vitamin D3 (essential for innate and adaptive immune responses), zinc (necessary for the development of immune cells), and probiotics (which strengthen the intestinal barrier, where 70% of the immune system resides).
When should I take immunity supplements?
Immunity supplements can be taken preventively throughout the year (especially vitamin D3 in autumn/winter) or in more intense doses during periods of increased stress, seasonal changes, or when the first symptoms appear. Consult a healthcare professional for personalised dosages.
Is vitamin D3 important for the immune system?
Yes. Vitamin D3 is essential for the activation of T cells and NK cells in the immune system. In Portugal, vitamin D deficiency is very prevalent, especially in winter, making supplementation particularly relevant for maintaining the body's natural defences.

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.