Nature's Way SystemWell®, Ultimate Immune, 90 Tablets supplement bottle
Nature's Way

SystemWell®, Ultimate Immune, 90 Tablets

What We Researched
17 active ingredients analyzed · 9 inactive ingredients decoded · 5 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
73
Product Score Fair
95
Brand Score Excellent

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin A (as 80% retinyl acetate, 20% beta carotene) 1,500 mcg 167%
Vitamin C (ascorbic acid) 1,000 mg 1,111%
Vitamin D (as ergocalciferol) 10 mcg 50%
Zinc (as zinc bisglycinate) 15 mg 136%
Selenium (as L-selenomethionine) 25 mcg 45%
Immunity Blend: Echinacea purpurea (stem, leaf, flower), Astragalus (root), Olive (leaf) 455 mg **
Circulatory Blend: Garlic (bulb), Cayenne Pepper (fruit) 350 mg **
Cellular Blend: IP-6 (Inositol Hexaphosphate)(from Calcium Magnesium Phytate), Maitake Mycelial & Primordia Biomass, Reishi Mycelial & Primordia Biomass, Shiitake Mycelial & Primordia Biomass, Yamabushitake Mycelial & Primordia Biomass 315 mg **
Digestive Blend: Arabinogalactan (from Larix laricina); Oregon Grape (Mahonia aquifolium)(root, rhizome, stem), Goldenseal (Hydrastis canadensis)(aerial parts), Fructooligosaccharides 290 mg **
Respiratory Blend: Fenugreek (seed), Horehound (herb), Thyme (leaf), Elecampane (root) 240 mg **
Eleuthero (root) 65 mg **
Guggul (gum resin) Extract 65 mg **
Rosemary (leaf) 65 mg **
Gotu Kola (aerial parts) 50 mg **
Plantain (leaf) 20 mg **
Bioavailability Good

Absorption Rating

  • Vitamin A (as 80% retinyl acetate, 20% beta carotene) Good
  • Vitamin C (ascorbic acid) Fair
  • Vitamin D (as ergocalciferol) Fair
  • Zinc (as zinc bisglycinate) Good
  • Selenium (as L-selenomethionine) Good
  • Immunity Blend: Echinacea purpurea (stem, leaf, flower), Astragalus (root), Olive (leaf) Fair
  • Circulatory Blend: Garlic (bulb), Cayenne Pepper (fruit) Fair
  • Cellular Blend: IP-6 (Inositol Hexaphosphate)(from Calcium Magnesium Phytate), Maitake Mycelial & Primordia Biomass, Reishi Mycelial & Primordia Biomass, Shiitake Mycelial & Primordia Biomass, Yamabushitake Mycelial & Primordia Biomass Fair
  • Digestive Blend: Arabinogalactan (from Larix laricina); Oregon Grape (Mahonia aquifolium)(root, rhizome, stem), Goldenseal (Hydrastis canadensis)(aerial parts), Fructooligosaccharides Good
  • Respiratory Blend: Fenugreek (seed), Horehound (herb), Thyme (leaf), Elecampane (root) Fair
  • Eleuthero (root) Fair
  • Guggul (gum resin) Extract Fair
  • Rosemary (leaf) Fair
  • Gotu Kola (aerial parts) Fair
  • Plantain (leaf) Fair
Other Ingredients Excellent

Fillers & Additives

  • Cellulose
  • Stearic Acid
  • Silica
  • Sodium Croscarmellose
  • Hypromellose
  • Magnesium Stearate
  • Glycerin
  • Gelatin
  • Brown Rice
Efficacy Poor

Dosage Analysis

  • Vitamin A (as 80% retinyl acetate, 20% beta carotene) 1,500 mcg Effective
  • Vitamin C (ascorbic acid) 1,000 mg Effective
  • Vitamin D (as ergocalciferol) 10 mcg Under-dosed
  • Zinc (as zinc bisglycinate) 15 mg Effective
  • Selenium (as L-selenomethionine) 25 mcg Under-dosed
  • Immunity Blend: Echinacea purpurea (stem, leaf, flower), Astragalus (root), Olive (leaf) 455 mg Under-dosed
  • Circulatory Blend: Garlic (bulb), Cayenne Pepper (fruit) 350 mg Effective
  • Cellular Blend: IP-6 (Inositol Hexaphosphate)(from Calcium Magnesium Phytate), Maitake Mycelial & Primordia Biomass, Reishi Mycelial & Primordia Biomass, Shiitake Mycelial & Primordia Biomass, Yamabushitake Mycelial & Primordia Biomass 315 mg Under-dosed
  • Digestive Blend: Arabinogalactan (from Larix laricina); Oregon Grape (Mahonia aquifolium)(root, rhizome, stem), Goldenseal (Hydrastis canadensis)(aerial parts), Fructooligosaccharides 290 mg Under-dosed
  • Respiratory Blend: Fenugreek (seed), Horehound (herb), Thyme (leaf), Elecampane (root) 240 mg Under-dosed
  • Eleuthero (root) 65 mg Under-dosed
  • Guggul (gum resin) Extract 65 mg Under-dosed
  • Gotu Kola (aerial parts) 50 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 10
Total Carbohydrate 2 g 1%†
Vitamin A (as 80% retinyl acetate, 20% beta carotene) 1,500 mcg 167%
Vitamin C (ascorbic acid) 1,000 mg 1,111%
Vitamin D (as ergocalciferol) 10 mcg 50%
Zinc (as zinc bisglycinate) 15 mg 136%
Selenium (as L-selenomethionine) 25 mcg 45%
Immunity Blend: Echinacea purpurea (stem, leaf, flower), Astragalus (root), Olive (leaf) 455 mg **
Circulatory Blend: Garlic (bulb), Cayenne Pepper (fruit) 350 mg **
Cellular Blend: IP-6 (Inositol Hexaphosphate)(from Calcium Magnesium Phytate), Maitake Mycelial & Primordia Biomass, Reishi Mycelial & Primordia Biomass, Shiitake Mycelial & Primordia Biomass, Yamabushitake Mycelial & Primordia Biomass 315 mg **
Digestive Blend: Arabinogalactan (from Larix laricina); Oregon Grape (Mahonia aquifolium)(root, rhizome, stem), Goldenseal (Hydrastis canadensis)(aerial parts), Fructooligosaccharides 290 mg **
Respiratory Blend: Fenugreek (seed), Horehound (herb), Thyme (leaf), Elecampane (root) 240 mg **
Eleuthero (root) 65 mg **
Guggul (gum resin) Extract 65 mg **
Rosemary (leaf) 65 mg **
Gotu Kola (aerial parts) 50 mg **
Plantain (leaf) 20 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Sodium Croscarmellose Generally_safe

It is used as a binder and disintegrant to help tablets dissolve.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Brown Rice Generally_safe

It is used to add bulk to the supplement.

Price Comparison

Vitacost $17.69 $0.59 / serving
Best Price
iHerb $18.40 $0.61 / serving

Price History

Tracked across major retailers. Updated periodically.

$20$19$18$17$16 Mar 12 $18.00$17.69
iHerb
Vitacost

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Nature's Way

Founded 1969 · Green Bay, Wisconsin, USA · 481 products · naturesway.com

Certifications

5 certifications
Consumerlab Verified Source
Labdoor Verified Source
Non Gmo Project Verified Source
Nsf Gmp Verified Source
Usda Organic Verified Source

Transparency

5 claims
Third Party Testing Claim — Verified Source
Coa Availability — Claimed Source
Testing Lab Disclosure — Verified Source
In House Testing — Verified Source

Violation History

3 incidents
Fda Warning Violations of the Foreign Supplier Verification Program (FSVP) regulation.2022-12-20Source
Lawsuit Mislabeled and fraudulent herbal supplements.2015Source
Recall Nettle capsules2002-06-28Source
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Frequently Asked Questions
Is Nature's Way SystemWell®, Ultimate Immune a good supplement?

Nature's Way SystemWell®, Ultimate Immune, 90 Tablets received a product quality score of 73/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 17 active ingredients with 30 servings per container. Of the 9 inactive ingredients, 7 are rated safe and 0 are flagged for review. The manufacturer, Nature's Way, holds a brand trust score of 95/100 with 5 verified certifications including Consumerlab, Labdoor, Non Gmo Project, Nsf Gmp.

What are the ingredients in Nature's Way SystemWell®, Ultimate Immune?

Nature's Way SystemWell®, Ultimate Immune contains 17 active ingredients: Calories (10), Total Carbohydrate (2 g), Vitamin A (as 80% retinyl acetate, 20% beta carotene) (1,500 mcg), Vitamin C (ascorbic acid) (1,000 mg), Vitamin D (as ergocalciferol) (10 mcg), Zinc (as zinc bisglycinate) (15 mg), and 11 more. Notable high-dose ingredients include Vitamin C at 1,111% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature's Way SystemWell®, Ultimate Immune safe to take?

Nature's Way SystemWell®, Ultimate Immune, 90 Tablets has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Nature's Way a trustworthy supplement brand?

Nature's Way receives a brand trust score of 95/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1969 and headquartered in Green Bay, Wisconsin, USA, the company offers 481 products in their lineup. They hold 5 verified certifications including Consumerlab, Labdoor, Non Gmo Project, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Nature's Way has 3 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.