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Dr. Stephen Langer's Ultimate 16 Strain Probiotic with FOSDr. Stephen Langer's Ultimate 16 Strain Probiotic with FOS
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Dr. Stephen Langer's Ultimate 16 Strain Probiotic with FOS

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Triple Magnesium ComplexTriple Magnesium Complex
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Turmeric & Black PepperTurmeric & Black Pepper
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Turmeric & Black Pepper

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Shop by Health Concern Immune Supplements

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  • Liposomal Vitamin CLiposomal Vitamin C

    Liposomal Vitamin C

    Dr. Mercola Liposomal Vitamin C uses liposomes (fat) to increase the bioavailability of vitamin C, since water-soluble vitamin C is not absorbed well. Liposomal Vitamin C can also potentially ease intestinal discomfort associated with taking high amounts of vitamin C. Each serving delivers 1,000...
    $6.60
    $21.99
    $6.60
  • C-1000 Vitamin C Powder with Rose HipsC-1000 Vitamin C Powder with Rose Hips

    C-1000 Vitamin C Powder with Rose Hips

    The perfect vitamin C supplement for people who have trouble swallowing pills, Swanson C-1000 Vitamin C Powder with Rose Hips lets you turn any beverage into a high-potency source of antioxidant protection. Just one third of a teaspoon mixed with water or juice delivers...
    $5.61
    $18.69
    $5.61
  • Vitamin C with BioflavonoidsVitamin C with Bioflavonoids

    Vitamin C with Bioflavonoids

    Nature's Way Vitamin C with Bioflavonoids supports immune function, promotes collagen for healthy skin, and provides powerful antioxidant protection from vitamin C. With high potency vitamin C per 2-capsule serving.
    $8.85
    $29.49
    $8.85
  • Ester-C Plus Vitamin C

    Ester-C Plus Vitamin C

    Patented Ester-C is a complex of vitamin C, essential minerals, and vitamin C metabolites. Solgar Ester-C supports immune system health, healthy vision, antioxidant and cardiovascular health. Ester-C is non-acidic and stomach friendly. 
    $4.35
    $14.49
    $4.35
  • Ester-C Plus Vitamin CEster-C Plus Vitamin C

    Ester-C Plus Vitamin C

    Exclusively formulated for Solgar, Ester-C Plus Vitamin C features a patented, pH neutral (non acidic) Vitamin C that is gentle on the stomach. A special manufacturing process is employed to form a unique calcium ascorbate metabolite complex. This well-retained complex incorporates natural bioflavonoids and...
    $8.43
    $28.09
    $8.43
  • Vitamin C Complex with BioflavonoidsVitamin C Complex with Bioflavonoids

    Vitamin C Complex with Bioflavonoids

    Since Nobel-prize winning scientist Linus Pauling popularized vitamin C in the 1970s, it's become the single most recognized and utilized dietary supplement in history. But not all vitamin C supplements are created equal, and some experts suggest that many just pass right through your...
    $1.80
    $5.99
    $1.80
  • C-500

    C-500

    Vitamin C is perhaps the most popular vitamin known to man. It is consumed in a supplemental form by millions of people across the world for its antioxidant properties, which are well-documented in medical research. Calcium ascorbate is an optimal nutritional supplement that combines...
    $2.46
    $8.19
    $2.46
  • Chewable C-500 - OrangeChewable C-500 - Orange

    Chewable C-500 - Orange

    Now Foods Chewable C-500 provides a potent dosage of this key vitamin and is blended with acerola, a natural source of Vitamin C. Vitamin C is perhaps the most popular vitamin known to man. It is consumed in a supplemental form by millions of...
    $3.15
    $10.49
    $3.15
  • Ester-C with Citrus BioflavonoidsEster-C with Citrus Bioflavonoids

    Ester-C with Citrus Bioflavonoids

    Does supplemental vitamin C's acidity keep you away from the extra C you need? If so, Ester-C®, the best-known brand of non-acidic vitamin C, is your solution. Founded in 1930, American Health is a leading manufacturer of quality nutritional supplements and innovative formulations. Now...
    $9.24
    $30.79
    $9.24
  • Vitamin CVitamin C

    Vitamin C

    Bolster your body's natural defenses with Solgar Vitamin C 1,000 mg. Vitamin C is well-known for its superior antioxidant power and is the leading vitamin for immune support. Vitamin C is involved in collagen formation, which is important for healthy nails, skin and hair.
    $4.47
    $14.89
    $4.47
  • Ester-C with Citrus BioflavonoidsEster-C with Citrus Bioflavonoids

    Ester-C with Citrus Bioflavonoids

    Non-acidic Ester-C from American Health is a breakthrough patented formula that contains naturally-occurring vitamin-C metabolites and is quickly absorbed. Its unique manufacturing process neutralizes pH, making it gentle on the digestive system. Ester-C with Citrus Bioflavonoids delivers advanced antioxidant protection.
    $4.98
    $16.59
    $4.98
  • C-1000

    C-1000

    Vitamin C is consumed in supplemental form by millions of people across the world for its antioxidant properties, which are well-documented in medical research. C-1000 from NOW® provides a potent dosage of this key vitamin and is blended with Rose Hips, a synergistic nutrient...
    $6.87
    $22.89
    $6.87
  • Vitamin Code Raw Vitamin CVitamin Code Raw Vitamin C

    Vitamin Code Raw Vitamin C

    While most people associate vitamin C with immune support, the truth is that this powerful antioxidant, found in every cell of the body, is more far-reaching than a simple immune support vitamin. Garden of Life's RAW Vitamin C is a comprehensive, whole-food, vitamin C...
    $5.25
    $17.49
    $5.25
  • Liquid Vitamin CLiquid Vitamin C

    Liquid Vitamin C

    Liquid Vitamin C from Dynamic Health is naturally citrus-flavored and delivers 1000 mg per serving. This maximum absorption formula features natural rose hips and bioflavonoids. This liquid is quicker and easier to digest than hard tablets or capsules.
    $4.02
    $13.39
    $4.02
  • Chewable Vitamin C - Peach, Passionfruit

    Chewable Vitamin C - Peach, Passionfruit

    Peach, passionfruit and mango flavored immune support! Natural Factor's delicious chewable vitamin C wafers are naturally fruit flavored. Vitamin C is an important antioxidant that helps protect the body against environmental stressors.Product of Canada. Contains no artificial color or sweeteners; no yeast.
    $4.02
    $13.39
    $4.02
  • Liposomal Vitamin C - High BioavailabilityLiposomal Vitamin C - High Bioavailability

    Liposomal Vitamin C - High Bioavailability

    Liposomal Vitamin C from Swanson Ultra is a state-of-the-art formulation that packs vitamin C into fat-soluble liposomes. These liposomes deliver the vitamin safely through the digestive system directly to the bloodstream for optimal bioavailability. It’s gentler on the digestive tract than conventional ascorbic acid,...
    $15.00
    $49.99
    $15.00
  • Pure, Buffered Sodium AscorbatePure, Buffered Sodium Ascorbate

    Pure, Buffered Sodium Ascorbate

    Sodium Ascorbate is buffered (non-acidic) and will not contribute to gastric irritation in acid-sensitive persons. Sodium Ascorbate is synthesized from a combination of Sodium Bicarbonate and Ascorbic Acid to form Sodium Ascorbate. NOW Sodium Ascorbate Powder is an inexpensive buffered form of Vitamin C...
    $3.78
    $12.59
    $3.78
  • Chewable Vitamin C - Tangy Orange

    Chewable Vitamin C - Tangy Orange

    Vitamin C is an important antioxidant that helps protect the body against environmental stressors. Natural Factor's delicious chewable vitamin C wafers are naturally tangy orange flavored.
    $4.11
    $13.69
    $4.11
  • Kids Vitamin C Gummies - OrangeKids Vitamin C Gummies - Orange

    Kids Vitamin C Gummies - Orange

    Need peace of mind for your child’s immune health? Swanson Kids Vitamin C Gummies provide all the powerful health benefits of vitamin C in these delightful, easy-to-take gummies. Each gummy delivers a potent 125 mg of vitamin C suitable for children 2 and up,...
    $3.45
    $11.49
    $3.45
  • Chewable Vitamin C - Blueberry, Raspberry & Boysenberry

    Chewable Vitamin C - Blueberry, Raspberry & Boysenberry

    Blueberry, raspberry and boysenberry flavored immune support! Natural Factors delicious chewable vitamin C wafers are naturally fruit flavored. Vitamin C is an important antioxidant that helps protect the body against environmental stressors.
    $4.02
    $13.39
    $4.02

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