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Immune, Cold & Flu

Strengthen your defenses with immune support you can trust.

Immune, Cold & Flu
37 Results
37 Results

  • All Products (220)
  • Vitamins & Minerals (88)
  • Gut & Digestion (51)
  • Heart Health (42)
  • Immune, Cold & Flu (37)
  • Stress, Mood & Sleep (35)

    Your immune system works nonstop. Give it the backup it needs with targeted nutrients, probiotics, and antioxidants for everyday defense.

    1. UltraFlora® Complete Women's Probiotic

      For vaginal & urinary support—plus added benefits for gut, immune, & emotional health*

      4.6Average Rating 4.6

      New

      Image of the product UltraFlora® Complete Women's Probiotic

    2. UltraFlora® Complete Probiotic

      Our most comprehensive probiotic: complete gut, immune, skin health, and more*

      4.6Average Rating 4.6
      Image of the product UltraFlora® Complete Probiotic

    3. Vitamin D3 10,000 + K

      Supports strong bones, heart health, and immune system

      4.8Average Rating 4.8

      Best Seller

      Image of the product Vitamin D3 10,000 + K

    4. Vitamin D3 5000 + K

      Supports strong bones, heart, and immune health

      4.7Average Rating 4.7

      Best Seller

      Image of the product Vitamin D3 5000 + K

    5. UltraFlora® Balance Probiotic

      Starter probiotic for daily gut support*

      4.7Average Rating 4.7

      Best Seller

      Image of the product UltraFlora® Balance Probiotic

    6. UltraFlora® Probiotic + Multivitamin

      Probiotic & vitamins to support gut health and energy*

      4.5Average Rating 4.5

      New

      Image of the product UltraFlora® Probiotic + Multivitamin

    7. UltraFlora® 3-in-1 Daily Probiotic

      Synbiotic (probiotics + prebiotic) for gut and immune health

      4.5Average Rating 4.5
      Image of the product UltraFlora® 3-in-1 Daily Probiotic

    8. Vitamin D3 5000

      High-potency formula for bone, immune & cardiovascular health

      4.7Average Rating 4.7
      Image of the product Vitamin D3 5000

    9. UltraFlora® BiomePro Probiotic

      Supports gut, immune, and respiratory health*

      4.6Average Rating 4.6
      Image of the product UltraFlora® BiomePro Probiotic

    10. Immune Active™

      Immune system support*

      4.4Average Rating 4.4
      Image of the product Immune Active™

    11. Ultra Potent-C® 500 Vitamin C

      High-potency formula to support immune health. Gentle on the stomach.*

      4.6Average Rating 4.6
      Image of the product Ultra Potent-C® 500 Vitamin C

    12. Ultra Potent-C® 1000 Vitamin C

      High-potency Vitamin C formula to support immune health. Gentle on the stomach.*

      4.8Average Rating 4.8
      Image of the product Ultra Potent-C® 1000 Vitamin C

    13. Glutagenics®

      Powerful gastrointestinal lining support*

      4.9Average Rating 4.9
      Image of the product Glutagenics®

    14. Inflavonoid Intensive Care®

      Highly bioavailable curcumin to support joint discomfort*‡

      4.9Average Rating 4.9
      Image of the product Inflavonoid Intensive Care®

    15. Zinc A.G.™

      Supports immune health.*

      4.7Average Rating 4.7
      Image of the product Zinc A.G.™

    16. CandiBactin-AR®

      Supports healthy intestinal environment and digestion

      3.9Average Rating 3.9
      Image of the product CandiBactin-AR®

    17. Ultra Potent-C® Chewable Vitamin C

      High-potency formula to support immune health. Gentle on the stomach.*

      4.9Average Rating 4.9
      Image of the product Ultra Potent-C® Chewable Vitamin C

    18. Vitamin D3 Liquid

      High-potency formula for bone and immune health.*

      4.7Average Rating 4.7
      Image of the product Vitamin D3 Liquid

    19. Vitamin D3 1000

      High-potency formula for bone and immune health.*

      4.4Average Rating 4.4
      Image of the product Vitamin D3 1000

    20. Sinuplex®

      Supports healthy respiratory function.*

      4.3Average Rating 4.3
      Image of the product Sinuplex®

    21. Vitamin D3 2000 Complex

      High-potency Vitamin D3 formula for bone and immune health*

      4.8Average Rating 4.8
      Image of the product Vitamin D3 2000 Complex

    22. ImmuCore®

      Multidimensional immune system support*

      5.0Average Rating 5.0
      Image of the product ImmuCore®

    23. Perimine®

      Supports respiratory and immune health.*

      5.0Average Rating 5.0
      Image of the product Perimine®

    24. UltraFlora® Kids Probiotic

      Supports digestive and immune health*

      3.2Average Rating 3.2
      Image of the product UltraFlora® Kids Probiotic