Dr. Mercola Herbal Immune Support, 90 Capsules supplement bottle
Dr. Mercola

Herbal Immune Support, 90 Capsules

What We Researched
10 active ingredients analyzed · 5 inactive ingredients decoded · 4 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
71
Product Score Fair
81
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C [from Organic Acerola (Malpighia emarginata) Fruit Extract] 60 mg 67%
Vitamin D3 (as Cholecalciferol) (2,500 IU) 62.5 mcg 313%
Organic Acerola (Malpighia emarginata) Fruit Extract 300 mg *
Yarrow Flower Powder 200 mg *
Peppermint Leaf Powder 195 mg *
Elder (Sambucus nigra) Flower Extract 160 mg *
Dimethylglycine HCl 150 mg *
Oregano Leaf Oil Powder 50 mg *
Bee Propolis Powder 50 mg *
Olive (Olea europaea) Leaf Extract 25 mg *
Bioavailability Good

Absorption Rating

  • Vitamin C [from Organic Acerola (Malpighia emarginata) Fruit Extract] Fair
  • Vitamin D3 (as Cholecalciferol) (2,500 IU) Good
  • Organic Acerola (Malpighia emarginata) Fruit Extract Fair
  • Yarrow Flower Powder Fair
  • Peppermint Leaf Powder Fair
  • Elder (Sambucus nigra) Flower Extract Good
  • Dimethylglycine HCl Good
  • Oregano Leaf Oil Powder Poor
  • Bee Propolis Powder Fair
  • Olive (Olea europaea) Leaf Extract Fair
Other Ingredients Excellent

Fillers & Additives

  • Capsule (Hydroxypropyl Methylcellulose)
  • Microcrystalline Cellulose
  • Hydroxypropyl Cellulose
  • Ascorbyl Palmitate
  • Carob powder
Efficacy Poor

Dosage Analysis

  • Vitamin C [from Organic Acerola (Malpighia emarginata) Fruit Extract] 60 mg Under-dosed
  • Vitamin D3 (as Cholecalciferol) (2,500 IU) 62.5 mcg Effective
  • Yarrow Flower Powder 200 mg High
  • Elder (Sambucus nigra) Flower Extract 160 mg Under-dosed
  • Dimethylglycine HCl 150 mg Under-dosed
  • Bee Propolis Powder 50 mg Under-dosed
  • Olive (Olea europaea) Leaf Extract 25 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C [from Organic Acerola (Malpighia emarginata) Fruit Extract] 60 mg 67%
Vitamin D3 (as Cholecalciferol) (2,500 IU) 62.5 mcg 313%
Organic Acerola (Malpighia emarginata) Fruit Extract 300 mg *
Yarrow Flower Powder 200 mg *
Peppermint Leaf Powder 195 mg *
Elder (Sambucus nigra) Flower Extract 160 mg *
Dimethylglycine HCl 150 mg *
Oregano Leaf Oil Powder 50 mg *
Bee Propolis Powder 50 mg *
Olive (Olea europaea) Leaf Extract 25 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Capsule (Hydroxypropyl Methylcellulose) Safe

It provides a vegetarian encapsulation option.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Hydroxypropyl Cellulose Safe

Binds tablet ingredients and can form tablet coatings.

Ascorbyl Palmitate Safe

Prevents oxidation and extends shelf life of oil-based supplements.

Carob powder Unknown

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$26$25$24$23$22 Mar 12 $24.00
iHerb

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

Brand Trust Report
Dr. Mercola

Founded 1997 · Cape Coral, Florida, USA · 209 products · mercola.com/

Certifications

4 certifications
Consumerlab Verified Source
Nsf Gmp Verified Source
Usda Organic Verified Source
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Verified Source

Violation History

7 incidents
Prop 65 Lead2025-04-18Source
Lawsuit Wrongful termination and breach of a severance contract by the former CEO.2024Source
Fda Warning Unapproved and misbranded products related to Coronavirus Disease 2019 (COVID-19).2021-02-18Source
Lawsuit False and unsupported claims that its indoor tanning systems are safe and do not increase the risk of skin cancer.2016Source
Fda Warning Illegal marketing of a medical device.2011-01-01Source
Fda Warning Illegal drug claims for various supplements.2006-01-01Source
Fda Warning Illegal drug claims for various supplements.2005-01-01Source
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Frequently Asked Questions
Is Dr. Mercola Herbal Immune Support, 90 Capsules a good supplement?

Dr. Mercola Herbal Immune Support, 90 Capsules received a product quality score of 71/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 10 active ingredients with 30 servings per container. Of the 5 inactive ingredients, 4 are rated safe and 0 are flagged for review. The manufacturer, Dr. Mercola, holds a brand trust score of 81/100 with 4 verified certifications including Consumerlab, Nsf Gmp, Usda Organic, Fda Gmp Inspections.

What are the ingredients in Dr. Mercola Herbal Immune Support, 90 Capsules?

Dr. Mercola Herbal Immune Support, 90 Capsules contains 10 active ingredients: Vitamin C [from Organic Acerola (Malpighia emarginata) Fruit Extract] (60 mg), Vitamin D3 (as Cholecalciferol) (2,500 IU) (62.5 mcg), Organic Acerola (Malpighia emarginata) Fruit Extract (300 mg), Yarrow Flower Powder (200 mg), Peppermint Leaf Powder (195 mg), Elder (Sambucus nigra) Flower Extract (160 mg), and 4 more. Notable high-dose ingredients include Vitamin D3 at 313% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Dr. Mercola Herbal Immune Support, 90 Capsules safe to take?

Dr. Mercola Herbal Immune Support, 90 Capsules 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 Dr. Mercola a trustworthy supplement brand?

Dr. Mercola receives a brand trust score of 81/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1997 and headquartered in Cape Coral, Florida, USA, the company offers 209 products in their lineup. They hold 4 verified certifications including Consumerlab, Nsf Gmp, Usda Organic, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Dr. Mercola has 7 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.