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.

186 products

FAQs

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).

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.

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.