Nature's Way SystemWell Ultimate Immunity supplement bottle
Nature's Way

SystemWell Ultimate Immunity

What We Researched
18 active ingredients analyzed · 8 inactive ingredients decoded · 5 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
71
Product Score Fair
95
Brand Score Excellent

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Total Carbohydrates 3 g 1%
Vitamin A (as Beta-Carotene, Retinol Acetate) 5000 IU 100%
Vitamin C (as Ascorbic Acid) 1 g 1667%
Vitamin D (as Ergocalciferol) 200 IU 50%
Phosphorus (as Tricalcium Phosphate) 18 mg 2%
Zinc (as Zinc Amino Acid Chelate) 15 mg 100%
Selenium (as L-Selenomethionine) 25 mcg 36%
Circulatory Immunity Blend 510 mg
Digestive Immunity Blend 432.7 mg
Systemic Immunity Blend 282 mg
Cellular Immunity Blend 240 mg
Respiratory Immunity Blend 240 mg
Guggul extract 65 mg
Rosemary 65 mg
Burdock 50 mg
Aloe 25 mg
Plantain 20 mg
Bioavailability Good

Absorption Rating

  • Total Carbohydrates Fair
  • Vitamin A (as Beta-Carotene, Retinol Acetate) Fair
  • Vitamin C (as Ascorbic Acid) Fair
  • Vitamin D (as Ergocalciferol) Fair
  • Phosphorus (as Tricalcium Phosphate) Good
  • Zinc (as Zinc Amino Acid Chelate) Fair
  • Selenium (as L-Selenomethionine) Good
  • Guggul extract Fair
  • Rosemary Fair
  • Burdock Good
  • Aloe Fair
  • Plantain Fair
Other Ingredients Excellent

Fillers & Additives

  • Cellulose
  • Croscarmellose Sodium
  • Hydroxypropyl Cellulose
  • Silica
  • Hypromellose
  • Stearic Acid
  • Magnesium Stearate
  • Glycerin
Efficacy Poor

Dosage Analysis

  • Vitamin A (as Beta-Carotene, Retinol Acetate) 5000 IU Under-dosed
  • Vitamin C (as Ascorbic Acid) 1 g Effective
  • Vitamin D (as Ergocalciferol) 200 IU Under-dosed
  • Phosphorus (as Tricalcium Phosphate) 18 mg Under-dosed
  • Zinc (as Zinc Amino Acid Chelate) 15 mg Effective
  • Selenium (as L-Selenomethionine) 25 mcg Under-dosed
  • Guggul extract 65 mg Under-dosed
  • Burdock 50 mg Under-dosed
  • Aloe 25 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 15 kcal
Total Carbohydrates 3 g 1%
Vitamin A (as Beta-Carotene, Retinol Acetate) 5000 IU 100%
Vitamin C (as Ascorbic Acid) 1 g 1667%
Vitamin D (as Ergocalciferol) 200 IU 50%
Phosphorus (as Tricalcium Phosphate) 18 mg 2%
Zinc (as Zinc Amino Acid Chelate) 15 mg 100%
Selenium (as L-Selenomethionine) 25 mcg 36%
Circulatory Immunity Blend 510 mg
Digestive Immunity Blend 432.7 mg
Systemic Immunity Blend 282 mg
Cellular Immunity Blend 240 mg
Respiratory Immunity Blend 240 mg
Guggul extract 65 mg
Rosemary 65 mg
Burdock 50 mg
Aloe 25 mg
Plantain 20 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Hydroxypropyl Cellulose Safe

Binds tablet ingredients and can form tablet coatings.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Price Comparison

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 Immunity a good supplement?

Nature's Way SystemWell Ultimate Immunity received a product quality score of 71/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 18 active ingredients with 2 servings per container. All 8 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. 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 Immunity?

Nature's Way SystemWell Ultimate Immunity contains 18 active ingredients: Calories (15 kcal), Total Carbohydrates (3 g), Vitamin A (as Beta-Carotene, Retinol Acetate) (5000 IU), Vitamin C (as Ascorbic Acid) (1 g), Vitamin D (as Ergocalciferol) (200 IU), Phosphorus (as Tricalcium Phosphate) (18 mg), and 12 more. Notable high-dose ingredients include Vitamin C at 1667% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature's Way SystemWell Ultimate Immunity safe to take?

Nature's Way SystemWell Ultimate Immunity has been analyzed for ingredient safety across all its components. All 8 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. 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.