Metabolic Maintenance The Big One Plus, Without Iron Multivitamin, 90 Capsules supplement bottle
Metabolic Maintenance

The Big One Plus, Without Iron Multivitamin, 90 Capsules

What We Researched
24 active ingredients analyzed · 1 inactive ingredient decoded · 2 retailers compared · Last updated: Mar 2026
90
Product Score Excellent
68
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin A(as Beta Carotene and Palmitate) 2,400 mcg RAE 267%
Vitamin C(as Ascorbic Acid and Ascorbyl Palmitate) 125 mg 139%
Vitamin D-3(2,000 IU as Cholecalciferol) 50 mcg 250%
Vitamin E(100 IU as d-alpha Tocopheryl Acid Succinate and Mixed Tocopherols) 67 mg 447%
Vitamin K1 85 mcg 71%
Thiamine(as Thiamine Mononitrate) 25 mg 2,083%
Riboflavin(as Riboflavin 5' Phosphate) 25 mg 1,923%
Niacin(as Niacinamide) 100 mg NE 625%
Vitamin B-6(as Pyridoxal 5-Phosphate) 25 mg 1,471%
Folate(400 mcg as L-5-Methylfolate, calcium salt) 667 mcg DFE 167%
Vitamin B-12(as Methylcobalamin) 100 mcg 4,167%
Biotin 200 mcg 667%
Pantothenic Acid (as Calcium D-Pantothenate) 100 mg 2,000%
Iodine (as Potassium Iodide) 100 mcg 67%
Zinc (as Zinc Citrate) 15 mg 136%
Selenium (as L-Selenomethionine) 100 mcg 182%
Copper (as Copper Gluconate) 1 mg 111%
Manganese (as Manganese Glycinate) 5 mg 217%
Chromium (as Chromium Polynicotinate) 100 mcg 286%
Molybdenum (as Molybdenum Glycinate) 50 mcg 111%
Betaine HCL 25 mg *
Boron (as Boron Citrate) 1 mg *
Vanadium (as Vanadyl Sulfate) 50 mcg *
Vitamin K2 (as K2 MK-7) 15 mcg *
Bioavailability Very Good

Absorption Rating

  • Vitamin A(as Beta Carotene and Palmitate) Fair
  • Vitamin C(as Ascorbic Acid and Ascorbyl Palmitate) Fair
  • Vitamin D-3(2,000 IU as Cholecalciferol) Good
  • Vitamin E(100 IU as d-alpha Tocopheryl Acid Succinate and Mixed Tocopherols) Good
  • Vitamin K1 Fair
  • Thiamine(as Thiamine Mononitrate) Fair
  • Riboflavin(as Riboflavin 5' Phosphate) Good
  • Niacin(as Niacinamide) Good
  • Vitamin B-6(as Pyridoxal 5-Phosphate) Fair
  • Folate(400 mcg as L-5-Methylfolate, calcium salt) Good
  • Vitamin B-12(as Methylcobalamin) Good
  • Biotin Good
  • Pantothenic Acid (as Calcium D-Pantothenate) Good
  • Iodine (as Potassium Iodide) Good
  • Zinc (as Zinc Citrate) Good
  • Selenium (as L-Selenomethionine) Good
  • Copper (as Copper Gluconate) Good
  • Manganese (as Manganese Glycinate) Good
  • Chromium (as Chromium Polynicotinate) Good
  • Molybdenum (as Molybdenum Glycinate) Good
  • Betaine HCL Fair
  • Boron (as Boron Citrate) Good
  • Vanadium (as Vanadyl Sulfate) Poor
  • Vitamin K2 (as K2 MK-7) Good
Other Ingredients Excellent

Fillers & Additives

  • Vegetarian Cellulose Capsule
Efficacy Very Good

Dosage Analysis

  • Vitamin A(as Beta Carotene and Palmitate) 2,400 mcg RAE Effective
  • Vitamin C(as Ascorbic Acid and Ascorbyl Palmitate) 125 mg Effective
  • Vitamin D-3(2,000 IU as Cholecalciferol) 50 mcg Effective
  • Vitamin E(100 IU as d-alpha Tocopheryl Acid Succinate and Mixed Tocopherols) 67 mg Effective
  • Vitamin K1 85 mcg Under-dosed
  • Thiamine(as Thiamine Mononitrate) 25 mg Effective
  • Riboflavin(as Riboflavin 5' Phosphate) 25 mg Effective
  • Niacin(as Niacinamide) 100 mg NE High
  • Vitamin B-6(as Pyridoxal 5-Phosphate) 25 mg Effective
  • Folate(400 mcg as L-5-Methylfolate, calcium salt) 667 mcg DFE Effective
  • Vitamin B-12(as Methylcobalamin) 100 mcg Effective
  • Biotin 200 mcg Effective
  • Pantothenic Acid (as Calcium D-Pantothenate) 100 mg Effective
  • Iodine (as Potassium Iodide) 100 mcg Under-dosed
  • Zinc (as Zinc Citrate) 15 mg Effective
  • Selenium (as L-Selenomethionine) 100 mcg Effective
  • Copper (as Copper Gluconate) 1 mg Effective
  • Manganese (as Manganese Glycinate) 5 mg Effective
  • Chromium (as Chromium Polynicotinate) 100 mcg Effective
  • Molybdenum (as Molybdenum Glycinate) 50 mcg Effective
  • Betaine HCL 25 mg Under-dosed
  • Boron (as Boron Citrate) 1 mg Under-dosed
  • Vitamin K2 (as K2 MK-7) 15 mcg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin A(as Beta Carotene and Palmitate) 2,400 mcg RAE 267%
Vitamin C(as Ascorbic Acid and Ascorbyl Palmitate) 125 mg 139%
Vitamin D-3(2,000 IU as Cholecalciferol) 50 mcg 250%
Vitamin E(100 IU as d-alpha Tocopheryl Acid Succinate and Mixed Tocopherols) 67 mg 447%
Vitamin K1 85 mcg 71%
Thiamine(as Thiamine Mononitrate) 25 mg 2,083%
Riboflavin(as Riboflavin 5' Phosphate) 25 mg 1,923%
Niacin(as Niacinamide) 100 mg NE 625%
Vitamin B-6(as Pyridoxal 5-Phosphate) 25 mg 1,471%
Folate(400 mcg as L-5-Methylfolate, calcium salt) 667 mcg DFE 167%
Vitamin B-12(as Methylcobalamin) 100 mcg 4,167%
Biotin 200 mcg 667%
Pantothenic Acid (as Calcium D-Pantothenate) 100 mg 2,000%
Iodine (as Potassium Iodide) 100 mcg 67%
Zinc (as Zinc Citrate) 15 mg 136%
Selenium (as L-Selenomethionine) 100 mcg 182%
Copper (as Copper Gluconate) 1 mg 111%
Manganese (as Manganese Glycinate) 5 mg 217%
Chromium (as Chromium Polynicotinate) 100 mcg 286%
Molybdenum (as Molybdenum Glycinate) 50 mcg 111%
Betaine HCL 25 mg *
Boron (as Boron Citrate) 1 mg *
Vanadium (as Vanadyl Sulfate) 50 mcg *
Vitamin K2 (as K2 MK-7) 15 mcg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Vegetarian Cellulose Capsule Safe

It provides a vegetarian-friendly way to deliver the supplement.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$44$43$42$41$40 Mar 12 $42.00
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
Metabolic Maintenance

Founded 1984 · Sisters, Oregon, United States · 67 products · allergyresearchgroup.com/metabolic-maintenance

Transparency

3 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Claimed Source

Violation History

2 incidents
Prop 65 Lead2011-07-19Source
Lawsuit Failure to provide clear and reasonable warnings about exposure to lead in various supplement products.2011Source
Related Supplements
Frequently Asked Questions
Is Metabolic Maintenance The Big One Plus, Without Iron Multivitamin a good supplement?

Metabolic Maintenance The Big One Plus, Without Iron Multivitamin, 90 Capsules received a product quality score of 90/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 24 active ingredients All 1 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Metabolic Maintenance, holds a brand trust score of 68/100.

What are the ingredients in Metabolic Maintenance The Big One Plus, Without Iron Multivitamin?

Metabolic Maintenance The Big One Plus, Without Iron Multivitamin contains 24 active ingredients: Vitamin A(as Beta Carotene and Palmitate) (2,400 mcg RAE), Vitamin C(as Ascorbic Acid and Ascorbyl Palmitate) (125 mg), Vitamin D-3(2,000 IU as Cholecalciferol) (50 mcg), Vitamin E(100 IU as d-alpha Tocopheryl Acid Succinate and Mixed Tocopherols) (67 mg), Vitamin K1 (85 mcg), Thiamine(as Thiamine Mononitrate) (25 mg), and 18 more. Notable high-dose ingredients include Vitamin A at 267% DV, Vitamin D-3 at 250% DV, Vitamin E at 447% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Metabolic Maintenance The Big One Plus, Without Iron Multivitamin safe to take?

Metabolic Maintenance The Big One Plus, Without Iron Multivitamin, 90 Capsules has been analyzed for ingredient safety across all its components. All 1 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 Metabolic Maintenance a trustworthy supplement brand?

Metabolic Maintenance receives a brand trust score of 68/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1984 and headquartered in Sisters, Oregon, United States, the company offers 67 products in their lineup. Note: Metabolic Maintenance has 2 historical regulatory incidents on record, which are factored into the trust score.

What is magnesium good for?

Magnesium Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding magnesium good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

How much magnesium per day?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

What is zinc good for?

Zinc Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding zinc good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

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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.