Manganese 15 mg by Douglas Cooper Co. — Ingredients, Evidence & Safety

Product Label

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Safety Alerts

⚠️ Manganese: 15mg is 1.4× the Tolerable Upper Intake Level (11mg)

This supplement contains 15mg of manganese, which exceeds the recommended maximum daily limit of 11mg.

Label Data

1 Tablet(s) Serving Size

100 Servings

Mineral Product Type

0% Evidence Coverage

Supplement Facts — Evidence Check

Manganese

15 mg (750% DV)

⚠️ Exceeds Tolerable Upper Intake Level by 1.4× (UL: 11 mg) 📚 8 studies — no high-quality reviews

RDA 2.3mg This product: 15mg UL 11mg

Other Ingredients

Sorbitol Stearic Acid modified Cellulose Gum Silicon Dioxide, Colloidal Magnesium Stearate

Label Claims — Verification

❓ Nutrient

❓ All Other

❓ Structure/Function

All Other (100% of products) Structure/Function (74% of products) Nutrient (37% of products)

Target Groups

Adult (18 - 50 Years) Sugar Free

Product Information

📋 Directions for Use

Suggested Use As a dietary supplement, one tablet daily, or as recommended by your health care professional.

⚠️ Warnings & Precautions

Note: If you are pregnant or breastfeeding consult your health care professional before using this product.

Keep out of reach of children.

Contains: Wheat/gluten

🧪 Formulation Notes

Combining experience with a commitment to excellence, the unsurpassed quality of this and all Cooper products is assured by rigid quality controls and conformance to highest standard of purity.

Amino acid chelate

Contains no sugar, salt, preservatives or artificial color, flavor or fragrance.

The Manganese is chelated (bonded) with amino acids to enhance absorption. Manganese activates many enzymes and vitamins, including Vitamin C. Manganese works as an antioxidant to protect cell membranes and is needed for healthy bone formation, metabolism and energy cycles, and for cellular production of collagen, urea and insulin.

Additional Information

Store in a dry place at room temperature (59 degrees - 86 degrees F/15 degrees - 30 degrees C)

Douglas Cooper Co. "Trace Minerals Make the Difference" Since 1950

Product Details

DSLD Entry Date 2021-05-22

Product Type Mineral

Form Tablet or Pill

Brand Douglas Cooper Co.

DSLD ID 247368

Data Updated 2026-04-11

Research Evidence

11 Research Sources

47 Avg Quality Score

7 Rct

2 Meta Analysis

1 Regulatory Source

C Trace elements and Alzheimer dementia in population-based studies: A bibliometric and meta-analysis

Meta Analysis Environmental pollution (Barking, Essex : 1987) 2023

PubMed DOI

C Proteins involved in iron metabolism in beef cattle are affected by copper deficiency in combination with high dietary manganese, but not by copper deficiency alone

Rct Journal of animal science 2010

PubMed DOI

C Reducing mineral usage in feedlot diets for Nellore cattle: II. Impacts of calcium, phosphorus, copper, manganese, and zinc contents on intake, performance, and liver and bone status

Rct Journal of animal science 2017

PubMed DOI

C Copper, Ceruloplasmin, Zinc, and Manganese Levels in Brain and Biological Fluids from Parkinson's Disease Patients: Systematic Review and Meta-Analysis

Meta Analysis Cells 2026

PubMed DOI

C Risedronate reverses bone loss in postmenopausal women with low bone mass: results from a multinational, double-blind, placebo-controlled trial. BMD-MN Study Group

Rct The Journal of clinical endocrinology and metabolism 2000

PubMed

C Dietary Reference Intakes: Manganese

Regulatory Source IOM/NAM Dietary Reference Intakes 2000

C Vitamins and minerals intake adequacy in hematopoietic stem cell transplant: results of a randomized controlled trial.

Rct Bone marrow transplantation

PubMed DOI

C Collagen Peptides, in Association with Vitamin C, Sodium Hyaluronate, Manganese and Copper, as Part of the Rehabilitation Project in the Treatment of Chronic Low Back Pain.

Rct Endocrine, metabolic & immune disorders drug targets

PubMed DOI

C Glucosamine, chondroitin, and manganese ascorbate for degenerative joint disease of the knee or low back: a randomized, double-blind, placebo-controlled pilot study

Rct Military medicine 1999

PubMed

C Effects of a cream containing madecassoside, 5% panthenol, and copper-zinc-manganese on improving postlaser resurfacing wound healing: A split-face, randomized trial.

Rct Dermatologic therapy

PubMed DOI

View all evidence for Manganese →