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Our immune system is our body’s key defense mechanism for preventing and fighting off disease. It is your body’s own personal army and consists of cells, organs and tissues that work together to defend the body against “foreign invaders” such as bad bacteria, fungi and parasites. It is the immune system’s job to keep these invaders out or destroy them altogether. If you have a weak, or weakened immune system, steps such as regular detoxification of toxins, added nutrition and getting a good night’s sleep will be of prime importance.
SBI Protect® Capsules 120 Capsules
SBI Protect® is the only purified, dairy-free source of immunoglobulin G (IgG) available as a dietary supplement. Pure IgG helps to maintain a healthy intestinal immune system by binding a broad range of microbes and toxins within the gut lumen.
The discovery that th...
SBI Protect® Capsules 120 Capsules
$79.90
SBI Protect® Powder
SBI Protect® is the only purified, dairy-free source of immunoglobulin G (IgG) available as a dietary supplement. Pure IgG helps to maintain a healthy intestinal immune system by binding a broad ranges of microbes and toxins within the gut lumen.
The discovery that the gut barrier plays a key r...
SBI Protect® Powder
$73.90
Selenium Solution 236mL (8 fl.oz)
Selenium Solution delivers 100 µg of selenium per ½ teaspoon as sodium selenite in a pure, preservative-free liquid format designed for easy absorption and titration.* Selenium supports antioxidant activity, immune function, and thyroid hormone metabolism by serving as a critical component of s...
Selenium Solution 236mL (8 fl.oz)
$16.19
Seleno-Methionine
Selenium is natural antioxidant that supports the immune system and healthy blood flow.‡
Douglas Laboratories' logo, text, trademarks, graphics, and photo images are the property of Douglas Laboratories, LLC and are used with permission. Copyright © 2026.
*FDA Disclaimer: The information ab...
Seleno-Methionine
$21.00
Sepia Plex 1fl oz (30ml)
Overall Support: Plex Remedies are condition-specific homeopathic specialties prepared in low dilutions and are recommended for acute and chronic ailments. The product range helps support: the digestive, hormonal, immune, musculoskeletal, nervous, respiratory, skin, oral and vascular systems.* P...
Sepia Plex 1fl oz (30ml)
$26.80
Silvercillin™ Liquid 16 fl oz (473 mL)
Supports Immune Health and Microbial Balance*
Features purified silver to support healthy immune and inflammatory responses, as well as promote healthy gastrointestinal microbial balance.*
Gluten Free Dairy Free Soy Free Vegetarian Non-GMO Vegan
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Silvercillin™ Liquid 16 fl oz (473 mL)
$79.49
Silvercillin™ Spray 4 fl oz (118 mL)
Supports Immune Health and Microbial Balance*
Features purified silver to support healthy immune and inflammatory responses, as well as promote healthy gastrointestinal microbial balance.*
Gluten Free Dairy Free Soy Free Vegetarian Non-GMO Vegan
Designs for Health's logo, text, trademarks,...
Silvercillin™ Spray 4 fl oz (118 mL)
$34.99
Sinatrol® 60 Capsules
The standardized botanical extracts and nutrients in Sinatrol® support sinus health by reducing the viscosity of mucus, clearing airway passages, and promoting nasal microbial and inflammatory balance.
Optimal sinus health requires adequate mucus flow and clearance ...
Sinatrol® 60 Capsules
$38.60
Sinuplex®
Supports healthy respiratory function.*
Sinuplex® features a unique blend of vitamin C, quercetin, stinging nettle root extract, bromelain, and N-acetylcysteine—designed to support healthy respiratory function. These ingredients are carefully selected and manufactured with advanced processi...
Sinuplex®
$52.95
Stellar C™ 90 Vegetarian Capsules
Immune and Collagen Support*
Features vitamin C and plant bioflavonoids to promote healthy immune function and antioxidant status.* May also help support normal collagen production.*
Gluten Free Dairy Free Soy Free Vegetarian Non-GMO Vegan
Designs for Health's logo, text, trademarks, graph...
Stellar C™ 90 Vegetarian Capsules
$39.99
SuperGarlic 6000®
Super concentrated 6000 mcg allicin per tablet.
SuperGarlic 6000® mg is a super concentrated garlic supplement. Each batch is guaranteed by independent assay to supply an allicin yield of 6000 mcg per tablet.
Tablets have a special enteric coating designed to dissolve in the intestine— not the...
SuperGarlic 6000®
$45.95
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