NutriFeron by Shaklee — Ingredients, Evidence & Safety

Product Label

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Label Data

2 Caplet(s) Serving Size

30 Servings

Botanical with Nutrients Product Type

40% Evidence Coverage

Supplement Facts — Evidence Check

Calories

5 Calorie(s)

Total Carbohydrates

1 Gram(s) (1% DV)

Zinc

10 mg (91% DV)

✅ Within RDA (0.9× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)

RDA 11mg This product: 10mg UL 40mg

Copper

0.4 mg (44% DV)

✅ Within RDA (0.4× RDA of 0.9 mg) 📚 36 studies (Tier A: 0, B: 11)

RDA 0.9mg This product: 0.4mg UL 10mg

MACH Patented Blend of Interferon-Boosting Plant Extracts

500 mg

Other Ingredients

Microcrystalline Cellulose Dicalcium Phosphate Silicon Dioxide Croscarmellose Sodium Hydroxypropyl Methylcellulose hydroxylated Soy Lecithin Carnauba Wax Caramel color

Label Claims — Verification

❓ All Other

❓ Structure/Function

All Other (99% of products) Structure/Function (84% of products) Nutrient (48% of products)

Target Groups

Adult (18 - 50 Years) Kosher Gluten Free

Product Information

📋 Directions for Use

Directions: Take 2 caplets daily.

⚠️ Warnings & Precautions

Caution: If pregnant, nursing, or taking medications, consult your physician prior to use.

Seal under cap for your protection.

Manufactured in a facility that may also process tree nuts, milk, egg, soy, wheat, shellfish, and fish.

🧪 Formulation Notes

Phytonutrient Blend

Formulated by the immunologist who discovered interferon and shown in laboratory studies to naturally increase interferon at the cellular level. Claim refers to phytonutrient blend

GF Gluten free

Kosher

100% Carbon Neutral

No artificial flavors, sweeteners, or preservatives

Powerful breakthrough in immune science that helps maintain healthy immune function.

Patented, Clinically Tested

Tableted in the U.S. Product of Japan.

Additional Information

Safe Proven 100% guaranteed Shaklee since 1956

Dr Shaklee

Star-K (Kosher)

Product Details

DSLD Entry Date 2023-12-14

Product Type Botanical with Nutrients

Form Other (e.g. tea bag)

Brand Shaklee

DSLD ID 301170

Data Updated 2026-04-11

Research Evidence

397 Research Sources

55 Avg Quality Score

200 Meta Analysis

68 Rct

58 Systematic Review

53 Clinical Trial

9 Cochrane Review

2 Narrative Review

2 Regulatory Source

1 Observational

1 Other

1 Openfda Safety

A Zinc supplementation for improving pregnancy and infant outcome

Meta Analysis The Cochrane database of systematic reviews 2021

PubMed DOI Cochrane

A Zinc supplementation for preventing mortality, morbidity, and growth failure in children aged 6 months to 12 years

Narrative Review The Cochrane database of systematic reviews 2023

PubMed DOI Cochrane

A Oral zinc for treating diarrhoea in children

Meta Analysis The Cochrane database of systematic reviews 2016

PubMed DOI

A Zinc supplements for preventing otitis media

Meta Analysis The Cochrane database of systematic reviews 2014

PubMed DOI Cochrane

A Zinc for the prevention or treatment of acute viral respiratory tract infections in adults: a rapid systematic review and meta-analysis of randomised controlled trials

Meta Analysis BMJ open 2021

PubMed DOI

A Zinc supplements for preventing otitis media

Meta Analysis The Cochrane database of systematic reviews 2010

PubMed DOI Cochrane

A Zinc supplements for preventing otitis media

Meta Analysis The Cochrane database of systematic reviews 2012

PubMed DOI Cochrane

A Compression bandages or stockings versus no compression for treating venous leg ulcers

Meta Analysis The Cochrane database of systematic reviews 2021

PubMed DOI

A Zinc supplementation for mental and motor development in children