Collection: Immune Support*

If you’re looking to support your body’s normal immune response – whether you’re feeling fine and want to stay that way, or you need to feel better quickly – trust Natural Factors’ products. Many supplements are formulated with our clinically proven ECHINAMIDE® echinacea, the result of many years of extensive research. We offer a range of single and combination formulas to help support healthy immune function, respiratory health, and nasal and throat health.* 

36 products

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36 products

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Active Support Syrup

Provides immune and respiratory support*

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Regular price $23.95
Sale price $23.95 Regular price
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Anti-V Formula

Provides immune system support*

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Regular price From $15.95
Sale price From $15.95 Regular price
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Astaxanthin Plus

Provides powerful cell protection*

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Regular price $23.95
Sale price $23.95 Regular price

Bee Propolis

Helps soothe the throat and freshen the breath*

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Regular price From $15.95
Sale price From $15.95 Regular price
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Bioactive Quercetin EMIQ

Supports healthy sinus, and respiratory and immune system function*

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Regular price $30.95
Sale price $30.95 Regular price

Black Elderberry Standardized Extract

Provides immune and respiratory support*

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Regular price From $11.95
Sale price From $11.95 Regular price
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C Extra + Quercetin Bioflavonoids

Immune support*

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Regular price $15.95
Sale price $15.95 Regular price

Citrus Bioflavonoids plus Hesperidin

Provides bioflavonoids*

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Regular price $13.95
Sale price $13.95 Regular price

Echinamide® Echinacea Fresh Herb Extract

Supports immune health*

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Regular price From $14.95
Sale price From $14.95 Regular price
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GarlicRich® Garlic + Reishi

Supports immune and cardiovascular health*

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Regular price $15.95
Sale price $15.95 Regular price

L-Arginine

Supports cardiovascular health*

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Regular price From $10.95
Sale price From $10.95 Regular price
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L-Lysine

Supports a healthy immune system*

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Regular price From $10.95
Sale price From $10.95 Regular price
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Lung, Bronchial & Sinus Health

Nourishes the entire respiratory system!*

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Regular price From $15.95
Sale price From $15.95 Regular price
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Micronized L-Glutamine

Support for muscle tissue and the immune system*

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Regular price From $12.95
Sale price From $12.95 Regular price
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N-Acetyl-L-Cysteine

Supports healthy liver and lung function*

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Regular price From $15.95
Sale price From $15.95 Regular price
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Oil of Oregano

Provides antioxidants for the maintenance of good health*

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Regular price From $12.95
Sale price From $12.95 Regular price
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Olive Leaf Extract

Provides natural support for the body’s defense system*

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Regular price From $13.95
Sale price From $13.95 Regular price
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Quercetin

Supports healthy sinus, and respiratory and immune system function*

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Regular price $22.95
Sale price $22.95 Regular price

Quercetin LipoMicel Matrix

Supports healthy sinus, and respiratory and immune system function*

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Regular price From $27.95
Sale price From $27.95 Regular price
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Quercetin with Zinc & Copper

Supports immune function*

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Regular price $26.95
Sale price $26.95 Regular price
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Quick-Blast

Provides soothing support in one bite!*

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Rutin

Promotes healthy veins, arteries, and capillaries*

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Regular price $14.95
Sale price $14.95 Regular price

SelenoExcell® Selenium

Provides antioxidant and immune support*

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Regular price $13.95
Sale price $13.95 Regular price

Super Mushroom

Provides immune and energy support*

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Regular price From $32.95
Sale price From $32.95 Regular price
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Throat Spray Formula

Soothes the throat and freshens the breath*

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Regular price $16.95
Sale price $16.95 Regular price

Vegan Bioenhanced Vitamin D3

Helps maintain a healthy immune system*

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Regular price From $19.95
Sale price From $19.95 Regular price
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Vitamin C

Supports healthy bones, cartilage, teeth, and gums*

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Regular price From $9.95
Sale price From $9.95 Regular price
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Vitamin C BioCgel™ with BerryRich®

High-absorption ascorbate C with bioflavonoids*

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Regular price $19.95
Sale price $19.95 Regular price

Vitamin C Fruit-Flavor Chewable

Supports healthy bones, cartilage, teeth, and gums*

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Regular price From $14.95
Sale price From $14.95 Regular price
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Vitamin D3

Supports healthy bones*

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Regular price From $5.95
Sale price From $5.95 Regular price
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Vitamin D3 for Kids

Helps in the development of bones and teeth*

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Regular price From $7.95
Sale price From $7.95 Regular price
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Zinc Bisglycinate

Provides immune support*

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Regular price From $10.95
Sale price From $10.95 Regular price
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Zinc Chelate

Supports healthy skin and immune function*

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Regular price $7.95
Sale price $7.95 Regular price

Zinc Citrate

Supports healthy skin and immune function*

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Regular price From $7.95
Sale price From $7.95 Regular price
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Zinc Lozenges with Echinamide, Elderberry & Vitamin C

Provides soothing relief for your throat*

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Regular price $11.95
Sale price $11.95 Regular price
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