Zahler Immune Defense supplement bottle
Zahler

Immune Defense Review

What We Researched
6 active ingredients analyzed · 3 inactive ingredients decoded · 3 brand certifications checked · Last updated: Aug 2026
91
Product Score Excellent
81
Brand Score Good

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (PureWay-C®) 600 mg 667%
Pantothenic Acid(as Calcium-D-Pantothenate) 500 mg 10,000%
Olive Leaf Extract 900 mg *
Bee Propolis Powder 900 mg *
Masson Pine Bark Extract 90 mg *
Maritime Pine Bark ExtractPycnogenol® 10 mg *
Bioavailability Very Good

Absorption Rating

  • Vitamin C (PureWay-C®) Fair
  • Pantothenic Acid(as Calcium-D-Pantothenate) Good
  • Olive Leaf Extract Good
  • Bee Propolis Powder Fair
  • Masson Pine Bark Extract Good
  • Maritime Pine Bark ExtractPycnogenol® Good
Other Ingredients Excellent

Fillers & Additives

  • Magnesium Stearate
  • Hypromellose
  • Rice Flour
Efficacy Very Good

Dosage Analysis

  • Vitamin C (PureWay-C®) 600 mg Effective
  • Pantothenic Acid(as Calcium-D-Pantothenate) 500 mg Effective
  • Olive Leaf Extract 900 mg Effective
  • Bee Propolis Powder 900 mg Effective
  • Masson Pine Bark Extract 90 mg Effective
  • Maritime Pine Bark ExtractPycnogenol® 10 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (PureWay-C®) 600 mg 667%
Pantothenic Acid(as Calcium-D-Pantothenate) 500 mg 10,000%
Olive Leaf Extract 900 mg *
Bee Propolis Powder 900 mg *
Masson Pine Bark Extract 90 mg *
Maritime Pine Bark ExtractPycnogenol® 10 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Rice Flour Safe

Natural bulking agent to fill capsule space. Hypoallergenic.

Brand Trust Report
Zahler

Founded 2005 · Brooklyn, NY, USA · 174 products · zahlers.com/

Certifications

3 certifications
Fda Gmp Inspections Verified Source
Kosher Certified Verified Source
NSF Certified Verified

Transparency

5 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source
Testing Lab Disclosure — True
Contains Proprietary Blend — True

Violation History

4 incidents
Prop 65 Lead2023-08-28Source
Lawsuit Trademark Infringement2022Source
Prop 65 Lead2021-12-09Source
Fda Warning A retailer was cited for making drug claims about a Zahler product.2017-04-17Source
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Frequently Asked Questions
Is Zahler Immune Defense a good supplement?

Zahler Immune Defense received a product quality score of 91/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 6 active ingredients with 30 servings per container. All 3 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Zahler, holds a brand trust score of 81/100 with 3 verified certifications including Fda Gmp Inspections, Kosher Certified, NSF Certified.

What are the ingredients in Zahler Immune Defense?

Zahler Immune Defense contains 6 active ingredients: Vitamin C (PureWay-C®) (600 mg), Pantothenic Acid(as Calcium-D-Pantothenate) (500 mg), Olive Leaf Extract (900 mg), Bee Propolis Powder (900 mg), Masson Pine Bark Extract (90 mg), Maritime Pine Bark ExtractPycnogenol® (10 mg). Notable high-dose ingredients include Vitamin C at 667% DV, Pantothenic Acid at 10,000% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Zahler Immune Defense safe to take?

Zahler Immune Defense has been analyzed for ingredient safety across all its components. All 3 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 Zahler a trustworthy supplement brand?

Zahler receives a brand trust score of 81/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2005 and headquartered in Brooklyn, NY, USA, the company offers 174 products in their lineup. They hold 3 verified certifications including Fda Gmp Inspections, Kosher Certified, NSF Certified. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Zahler has 4 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 — read our methodology. 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.