Metagenics

ImmuCore®, 90 Tablets

Name: ImmuCore®, 90 Tablets
Brand: Metagenics
Rating: 2.9 (1 reviews)

What We Researched

8 active ingredients analyzed · 29 inactive ingredients decoded · 7 brand certifications checked · 3 retailers compared · Last updated: Mar 2026

Product Score Poor

Brand Score Excellent

Product Analysis

Transparency Very Poor

Supplement Facts

Ingredient	Amount	% DV
Vitamin C (as Ultra Potent-C®)	333 mg	370%
Vitamin D (as cholecalciferol) (333 IU)	8.3 mcg	42%
Niacin (as niacinamide ascorbate)	26 mg	163%
Zinc (as zinc citrate)	5 mg	45%
Selenium (as selenomethionine)	67 mcg	122%
A Proprietary 10:1†Water Extract of:Reishi (Ganoderma lucidum) Fruiting Body, Shiitake (Lentinus edodes) Fruiting Body, Fu-Ling (Poria cocos) Sclerotium, Turkey Tail Mushroom (Coriolus versicolor) Fruiting Body, Oyster Mushroom (Pleurotus ostreatus) Fruiting Body, Cordyceps (Paecilomyces hepiali Chen)†† Mycelia, Maitake (Grifola frondosa) Fruiting Body	217 mg	**
Oleanolic Acid	60 mg	**

Bioavailability Very Good

Absorption Rating

Vitamin C (as Ultra Potent-C®) Fair
Vitamin D (as cholecalciferol) (333 IU) Good
Niacin (as niacinamide ascorbate) Good
Zinc (as zinc citrate) Good
Selenium (as selenomethionine) Good
A Proprietary 10:1†Water Extract of:Reishi (Ganoderma lucidum) Fruiting Body, Shiitake (Lentinus edodes) Fruiting Body, Fu-Ling (Poria cocos) Sclerotium, Turkey Tail Mushroom (Coriolus versicolor) Fruiting Body, Oyster Mushroom (Pleurotus ostreatus) Fruiting Body, Cordyceps (Paecilomyces hepiali Chen)†† Mycelia, Maitake (Grifola frondosa) Fruiting Body Fair

Other Ingredients Excellent

Fillers & Additives

Calcium Ascorbate
Niacinamide Ascorbate
Ascorbic Acid
Xylitol
Sodium Ascorbate
Magnesium Ascorbate
L-Lysine Hydrochloride
Ascorbyl Palmitate
Citrus Bioflavonoid Complex
Potassium Ascorbate
Tetrasodium Pyrophosphate
Alpha-D-Ribofuranose
L-Cysteine Hydrochloride
L-Glutathione
Proprietary Mushroom Decoction
Microcrystalline Cellulose
Oleanolic Acid
Cellulose
Calcium Silicate
Stearic Acid
Croscarmellose Sodium
Silica
Zinc Citrate
Selenomethionine
Magnesium Stearate
Cholecalciferol
Hypromellose
Medium Chain Triglycerides
Hydroxypropyl Cellulose

Efficacy Fair

Dosage Analysis

Vitamin C (as Ultra Potent-C®) 333 mg Effective
Vitamin D (as cholecalciferol) (333 IU) 8.3 mcg Under-dosed
Niacin (as niacinamide ascorbate) 26 mg Effective
Zinc (as zinc citrate) 5 mg Under-dosed
Selenium (as selenomethionine) 67 mcg Effective
A Proprietary 10:1†Water Extract of:Reishi (Ganoderma lucidum) Fruiting Body, Shiitake (Lentinus edodes) Fruiting Body, Fu-Ling (Poria cocos) Sclerotium, Turkey Tail Mushroom (Coriolus versicolor) Fruiting Body, Oyster Mushroom (Pleurotus ostreatus) Fruiting Body, Cordyceps (Paecilomyces hepiali Chen)†† Mycelia, Maitake (Grifola frondosa) Fruiting Body 217 mg Under-dosed

Supplement Facts

Ingredient	Amount	% Daily Value
Vitamin C (as Ultra Potent-C®)	333 mg	370%
Vitamin D (as cholecalciferol) (333 IU)	8.3 mcg	42%
Niacin (as niacinamide ascorbate)	26 mg	163%
Zinc (as zinc citrate)	5 mg	45%
Selenium (as selenomethionine)	67 mcg	122%
Sodium	10 mg	<1%
A Proprietary 10:1†Water Extract of:Reishi (Ganoderma lucidum) Fruiting Body, Shiitake (Lentinus edodes) Fruiting Body, Fu-Ling (Poria cocos) Sclerotium, Turkey Tail Mushroom (Coriolus versicolor) Fruiting Body, Oyster Mushroom (Pleurotus ostreatus) Fruiting Body, Cordyceps (Paecilomyces hepiali Chen)†† Mycelia, Maitake (Grifola frondosa) Fruiting Body	217 mg	**
Oleanolic Acid	60 mg	**

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Calcium Ascorbate Safe

It is added to supplements as a source of vitamin C and calcium.

Niacinamide Ascorbate Unknown

Ascorbic Acid Safe

Prevents oxidation and provides vitamin C.

Xylitol Safe

Provides sweetness with reduced calorie content. Does not promote tooth decay.

Sodium Ascorbate Safe

It helps to stabilize the pH and prevent oxidation.

Magnesium Ascorbate Unknown

L-Lysine Hydrochloride Unknown

Ascorbyl Palmitate Safe

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

Citrus Bioflavonoid Complex Unknown

Potassium Ascorbate Unknown

Tetrasodium Pyrophosphate Unknown

Alpha-D-Ribofuranose Unknown

L-Cysteine Hydrochloride Unknown

L-Glutathione Unknown

Proprietary Mushroom Decoction Unknown

Microcrystalline Cellulose Safe

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

Oleanolic Acid Unknown

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Calcium Silicate Safe

Prevents ingredient clumping during manufacturing.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Zinc Citrate Generally_safe

It is used as a source of zinc.

Selenomethionine Unknown

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Cholecalciferol Safe

It is used to supplement vitamin D levels.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Medium Chain Triglycerides Safe

Enhances absorption of fat-soluble vitamins.

Hydroxypropyl Cellulose Safe

Binds tablet ingredients and can form tablet coatings.

Price Comparison

iHerb $28.40 $0.32 / serving

Best Price

Target $45.95 $0.51 / serving

Price History

Tracked across major retailers. Updated periodically.

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

Certifications

7 certifications

B Corp Certified Verified Source

Consumerlab Verified

Gluten Free Gfco Verified Source

Non Gmo Project Verified Source

Fda Gmp Inspections Verified Source

Nsf Gmp Verified Source

Usp Verified Verified Source

Transparency

4 claims

Third Party Testing Claim — Verified Source

Coa Availability — Claimed Source

In House Testing — Verified Source

Violation History

3 incidents

Fda Warning A structure/function claim for 'Metagenics HerWellness Naturally Balanced' was deemed by the FDA to suggest the product is intended for use as a drug.2025-02-07Source

Prop 65 Lead2019-05-30Source

Fda Warning Mislabeling of 14 products as medical foods and making unapproved new drug claims.2013-08-13Source

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Frequently Asked Questions

Is Metagenics ImmuCore®, 90 Tablets a good supplement?

Metagenics ImmuCore®, 90 Tablets received a product quality score of 58/100 in GoodSupp's independent analysis, indicating several areas of concern that consumers should review. The product contains 8 active ingredients with 90 servings per container. Of the 29 inactive ingredients, 16 are rated safe and 0 are flagged for review. The manufacturer, Metagenics, holds a brand trust score of 93/100 with 7 verified certifications including B Corp Certified, Consumerlab, Gluten Free Gfco, Non Gmo Project.

What are the ingredients in Metagenics ImmuCore®, 90 Tablets?

Metagenics ImmuCore®, 90 Tablets contains 8 active ingredients: Vitamin C (as Ultra Potent-C®) (333 mg), Vitamin D (as cholecalciferol) (333 IU) (8.3 mcg), Niacin (as niacinamide ascorbate) (26 mg), Zinc (as zinc citrate) (5 mg), Selenium (as selenomethionine) (67 mcg), Sodium (10 mg), and 2 more. Notable high-dose ingredients include Vitamin C at 370% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Metagenics ImmuCore®, 90 Tablets safe to take?

Metagenics ImmuCore®, 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 Metagenics a trustworthy supplement brand?

Metagenics receives a brand trust score of 93/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1983 and headquartered in Aliso Viejo, California, United States, the company offers 185 products in their lineup. They hold 7 verified certifications including B Corp Certified, Consumerlab, Gluten Free Gfco, Non Gmo Project. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Metagenics 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.