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Your Guide to Immune System Nutrition

A well-functioning immune system is your body's first line of defence, and it relies on a steady supply of key nutrients to work normally. Vitamin C, zinc, and selenium each contribute to the normal function of the immune system through distinct and complementary mechanisms. Vitamin C supports immune cell activity and helps protect cells from oxidative stress. Zinc is essential for the normal development and function of immune cells. Selenium contributes to antioxidant defence within immune cells and supports normal thyroid function, which in turn helps regulate immune activity.

While no supplement can prevent illness, maintaining good levels of these essential nutrients helps ensure your immune system has the building blocks it needs. The combination of these three nutrients — each working through different pathways — provides broad nutritional support for your body's natural defences.

Key Nutrients for Immune Support

Vitamin C contributes to the normal function of the immune system, contributes to the protection of cells from oxidative stress, and contributes to the reduction of tiredness and fatigue. Zinc contributes to the normal function of the immune system, contributes to the protection of cells from oxidative stress, and contributes to normal DNA synthesis. Selenium contributes to the normal function of the immune system, contributes to normal thyroid function, and contributes to the protection of cells from oxidative stress. When taken together, these nutrients provide complementary support for the immune system through multiple biological pathways.

Lifestyle Factors for Immune Health

Immune health is built on a foundation of healthy habits. Adequate sleep (7-9 hours per night for most adults), regular moderate exercise, effective stress management, and good hygiene practices all play important roles. Nutrition fills the gaps — targeted supplementation supports immune function alongside, not instead of, these lifestyle fundamentals. A balanced diet rich in colourful fruits and vegetables, quality proteins, and healthy fats provides the broad nutritional base that supplements complement.

Nutri-Leaf supplements for immune support

Nutri-Leaf Immune Complex combines vitamin C from rose hip, zinc, selenium, echinacea, and ginger in one daily capsule with an HPMC plant-based shell. For additional vitamin C, Vitamin C 1000mg provides 1250% NRV of pure L-ascorbic acid in a clean two-ingredient formula. The Vitamin B Complex also supports the immune system, as several B vitamins contribute to normal immune function. Skin Hair & Nails provides zinc and copper, both of which play supporting roles in immune health.

Explore our Seasonal Immune Support Guide and Antioxidants Guide for more detailed information. Visit the Ingredient Philosophy page to understand our formulation approach.

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