AI overview
AI generated. Not medical advice.What it's for
Seasonal wellness support; Antioxidant support; Daily immune support
Who it may fit
Adults with busy schedules seeking short-term seasonal support or those with low intake of vitamin C-rich foods.
Key actives per serving
- Grapefruit Seed Extract: 250 mg
- Vitamin C (as calcium ascorbate): 125 mg (207% DV)
- Zinc (as gluconate): 5 mg (33% DV)
- Reishi Mushroom Extract (4:1): 100 mg
- Echinacea angustifolia Extract (4:1): 50 mg
How to take
Adults take 1 tablet daily for up to two weeks, with or without meals; taking with food may improve tolerance for sensitive stomachs.
Diet / Allergen fit
Gluten Free; Made without soya, milk, egg, yeast, wheat, sweeteners, preservatives, and GMOs; Not tested on animals.
Ingredients explained
Grapefruit Seed Extract
Provides bioactive flavonoids that may interact with microbial membranes and support a balanced microbial environment.
Caution: May interact with certain medicines; separate from medications and check for interactions if using multiple products.
Vitamin C (as calcium ascorbate)
Functions as an antioxidant and cofactor for enzymes involved in collagen formation and cellular defence.
Caution: Can cause digestive upset in some people; taking with food may improve tolerance.
Zinc (as gluconate)
Acts as a cofactor for numerous enzymes involved in cellular defence and antioxidant activity.
Caution: High total zinc intake from multiple products may reduce copper status; avoid combining with other high-zinc supplements.
Reishi Mushroom Extract (4:1)
Contains polysaccharides and triterpenes that may modulate immune cell signalling and antioxidant pathways.
Caution: May cause digestive discomfort in sensitive individuals; take with food if stomach upset occurs.
Echinacea angustifolia Extract (4:1)
Provides phenolic compounds that may influence innate immune signalling and short-term upper respiratory defence.
Caution: Not advised for those with known allergies to plants in the daisy family due to potential hypersensitivity.
How they work together
Grapefruit seed extract offers broad-spectrum bioactives, while vitamin C and zinc provide antioxidant and enzymatic support for cellular defences. Reishi and echinacea add botanical polysaccharides and phenolics that influence immune signalling, creating complementary coverage across antioxidant, enzymatic, and botanical pathways.
Safety and tips
Label Warning: Do not exceed the suggested use. Not recommended for use during pregnancy without advice from a licensed healthcare professional. Not for children under 12 years old.
Who should be cautious: People taking medications that may interact with grapefruit constituents, such as certain statins or calcium channel blockers, should be cautious. Those with citrus allergies should review ingredients. People with bleeding concerns or on anticoagulant or antiplatelet drugs may wish to use caution with ginger. People with autoimmune conditions may wish to be cautious with echinacea. If combining with medications that may interact, consulting a healthcare provider is recommended.
Product rankings:
iHerb Quality Promise
This product is guaranteed authentic and backed by our easy returns and refunds policy. Details
Grapefruit Seed Extract may support gut health, and probiotics can enhance beneficial gut bacteria, promoting a balanced digestive system.
AI generated. Not medical advice.
Overview
- Where Science Works Naturally®
- 250 mg Grapefruit Seed Extract
- With Echinacea, Astragalus, Vitamin C, Mushroom Extracts, Oregon Grape Root & Ginger Root
- Dietary Supplement
- Gluten Free
- Naturally Fresh Nitro Pak® Bacteria Free Environment
- Not Tested On Animals™
NutriBiotic DefensePlus® Tablets are a unique formulation combining grapefruit seed extract, vitamin C, echinacea extract, astragalus root, ginger root extract, Oregon grape root, yarrow extract, zinc, and the mushroom extracts of reishi, maitake, and shiitake and are used by healthcare professionals worldwide.
Each tablet has the same mg of grapefruit seed extract as 25 drops of NutriBiotic GSE Liquid Concentrate.
Specifications
- First available: 05/2007
-
Delivery weight:
0.09 kg
- Product Code: NBC-01014
- UPC: 728177010140
- Package quantity: 45 Count
- Dimensions: 4.6 x 4.6 x 8.4 cm , 0.09 kg
Suggested use
At first signs of imbalance or lowered resistance, take one tablet daily with or without meals for two weeks. Not recommended for children under 12 years old.
Other ingredients
Microcrystalline cellulose (binder), dicalcium phosphate, stearic acid, dextrose, silica dioxide, magnesium stearate (vegetable lubricant), and natural food glaze coating.
Made without soya, milk, egg, yeast, wheat, sweeteners, preservatives, and GMOs.
Warnings
Keep out of reach of children. Do not exceed suggested use or use during pregnancy without consulting a licensed healthcare professional.
Disclaimer
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally be despatched with alternative packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and do not rely solely on the information provided by iHerb. This website has been machine translated as a courtesy to customers. iHerb does not represent or warrant that the translations are complete or error-free and iHerb is not responsible for any translation errors or omissions.
| Supplement facts | ||
| Serving Size: 1 Tablet | ||
| Servings Per Container: 45 | ||
| Amount Per Serving | %DV | |
| Vitamin C (as Meta-C® calcium ascorbate) | 125 mg | 207% |
| Zinc (gluconate) | 5 mg | 33% |
| Grapefruit Seed Extract | 250 mg | * |
| Astragalus Root | 100 mg | * |
| Reishi Mushroom Extract (4:1) | 100 mg | * |
| Echinacea Angustifolia Extract (4:1) | 50 mg | * |
| Ginger Root Extract (6:1) | 50 mg | * |
| Maitake Mushroom Extract (4:1) | 50 mg | * |
| Oregon Grape Root | 50 mg | * |
| Shiitake Mushroom Extract (4:1) | 50 mg | * |
| Yarrow Extract (6:1) | 50 mg | * |
| *Daily Value (DV) not established. | ||