Vitamins and minerals for immune system support

With vitamins D,C A and zinc that help support your immune system

Help support the immune system with good nutrition

A healthy diet filled with whole grains, fruits and vegetables, and other nutrient-rich foods is important to keep your immune system working at its best.

It’s helpful to eat a variety of wholesome foods, but keep an eye out for a few key vitamins and minerals that your immune system especially depends on:

Vitamin A Source

Vitamin A

Vitamin A is an antioxidant with an essential role in maintaining physical barriers to infection (e.g., skin, linings of the nose, mouth, and intestines).

Sources: colourful fruits and vegetables like carrots, kale, chard, cantaloupe, and tomatoes.

Vitamin C Source

Vitamin C

Vitamin C is an antioxidant that increases the production of infection-fighting white blood cells and antibodies levels to help protect against viruses and bacteria.

Sources: citrus fruits, red bell peppers, broccoli, romaine lettuce, kale, and cranberries.

Vitamin D Source

Vitamin D

Vitamin D is important for calcium absorption and bone strength, and supports immune and inflammatory responses.

Sources: milk, eggs, and seafood (e.g., salmon, cod, and shrimp).

Zinc Source


Zinc helps regulate the immune system by maintaining the supply of white blood cells.

Sources: beef, chicken, lamb, pumpkin seeds, squash, asparagus, and mushrooms.

Ensure® provides vitamins and minerals that help support the immune system.

Ensure® provides nutrients that help support the immune system, including zinc and vitamins A, C, and D. These nutrients are essential for the growth and function of immune cells.

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* From a survey of 1,038 independent-living adults aged 50+ who added 1 serving of Ensure® Protein Max 30 g per day for at least 5 days over a 2-week period, compared to control group (p<0.0001).

Canadian formulation is similar to the one used in the survey. Applies to Chocolate and Vanilla flavours.

† Compared to one serving (235 mL) of Ensure® Regular.
‡ Per 330-mL serving.

§ Brand of oral nutritional supplements.

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