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Mega-One

Source Naturals
4.7
(635 ratings)
Manganese 6 mg
PABA 85 mg
Niacin 85 mg
Vitamin B6 85 mg
Molybdenum 100 mcg
Riboflavin 85 mg
Vitamin A 12000 IU
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Score90

A high-potency once-daily multivitamin that provides robust B-vitamin and mineral support for energy and general health.

How scoring works
Quantity:60 Tablet(s)(60 servings)
Goals:
General Health
Anti-Inflammatory Support
Cognitive Support
Energy
Metabolism Boost
Skin Health
Immunity
Brain Health

Score 90

A high-potency once-daily multivitamin that provides robust B-vitamin and mineral support for energy and general health.

How scoring works
$15.60($0.26 per serving)
Pure Formulas
$ 16.28
iHerb
$ 15.60
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Analysis

Source Naturals Mega-One provides a heavy-hitting nutritional baseline, delivering 85 mg each of thiamine, riboflavin, and niacinamide to support daily metabolic rates and energy conversion. The inclusion of 12,000 IU of Vitamin A and balanced levels of Vitamin C (via mineral ascorbates) supports both immune surveillance and skin health maintenance. It is designed for maximum convenience, providing a wide variety of trace minerals like manganese and molybdenum in a single daily dose.

While highly effective for energy goals, the formula relies on synthetic forms for many of its vitamins, such as folic acid and cyanocobalamin. The high level of Vitamin A is a major feature of this formula but requires caution for those consuming other high-A foods or supplements. This product is a solid, cost-efficient choice for individuals looking for high-potency metabolic support without the need for multiple servings throughout the day.

Pros

  • Convenient one-per-day tablet serving
  • High-potency B-complex for energy metabolism
  • Uses gentle mineral ascorbates for Vitamin C
  • Excellent value price per serving

Cons

  • Relies on synthetic B12 and folic acid
  • High dose of preformed Vitamin A
  • Magnesium and Calcium levels are minimal

Warnings

  • Check total daily Vitamin A intake
  • Best taken with food to reduce the risk of niacin flush

Nutrient quality

79 High impact

Provides a significant range of nutrients for daily maintenance in potent dosages that address common gaps. Quality is limited by the use of standard synthetic vitamins and some basic mineral forms.

Ingredient transparency

97 Highest impact

Labeling clearly identifies the weights for all active ingredients and provides specific chemical forms for many components. The absence of proprietary blends ensures full transparency, allowing for an accurate assessment of the formula.

Customer satisfaction

91 Highest impact

Strong positive ratings reflect a high level of consumer satisfaction with the product's value and comprehensive quality. User feedback confirms its reputation as a reliable and high-potency foundational supplement.

Value for money

95 Highest impact

Exceptional value per serving makes this one of the most accessible high-potency multivitamins available. The inclusion of chelated minerals and high nutrient weights at this price point provides matched value for budget-conscious consumers.

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Goals

Impact
Highest effect
A+ Goal FitA- Strength of SupportA CoverageA Formula Quality

This multivitamin provides broad support for daily vitality through a wide selection of vitamins and chelated minerals like zinc and chromium. These nutrients are essential cofactors for the body's metabolic pathways and contribute to long-term systemic resilience.

While the formulation covers several pillars of health, the reliance on basic forms like Vitamin A and folic acid may limit the total biological utility for some. However, the inclusion of buffered Vitamin C from multiple mineral ascorbates provides a high-quality contribution toward antioxidant defense.

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Impact
Highest effect
A Goal FitB Strength of SupportA+ CoverageA Formula Quality

A broad spectrum of b-vitamins, including thiamine and vitamin b6 at 85mg each, provides foundational support for neurological energy production and neurotransmitter synthesis. These are complemented by choline bitartrate and inositol, which are structural components of brain cell membranes.

The inclusion of various minerals like magnesium and zinc supports the enzymatic processes necessary for cognitive health. While it serves as a comprehensive daily multivitamin, the dosages and forms are standard rather than specialized for acute nootropic effects.

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Impact
Highest effect
A Goal FitB+ Strength of SupportA- CoverageA Formula Quality

This high-dose multivitamin provides potent levels of Vitamin C and Vitamin E to support systemic antioxidant status. The inclusion of mixed ascorbates and bioflavonoids appears well aligned with quenching oxidative stress.

While the foundational vitamins are well-dosed, many supportive compounds like Rutin are present at levels that may be too low for targeted benefits. It represents a robust option for general health maintenance through antioxidant support.

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Impact
Highest effect
A Goal FitB+ Strength of SupportB+ CoverageA- Formula Quality

High-potency B-vitamins like thiamine and riboflavin at 85mg each provide a robust engine for carbohydrate and fat metabolism. This foundational support ensures the body can efficiently convert food into the ATP required for physical vitality.

The inclusion of 11mg of iron assists in oxygen transport, although the presence of zinc and calcium in the same tablet may slightly reduce its total absorption. This once-daily formula provides a comprehensive nutrient baseline for sustaining mental and physical energy throughout the day.

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Impact
Highest effect
B+ Goal FitA- Strength of SupportB+ CoverageB Formula Quality

Vitamin A, Vitamin C, and Zinc provide a robust foundation for skin turnover and collagen synthesis in a concentrated one-per-day multivitamin. Pantothenic acid and Biotin contribute to the maintenance of the skin barrier and structural integrity.

These ingredients appear well aligned for foundational support of skin health and daily wellness. The inclusion of multiple forms of Vitamin C ensures high-potency antioxidant support to protect the skin from oxidative stress.

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Impact
Highest effect
B+ Goal FitB+ Strength of SupportB+ CoverageA Formula Quality

Iodine and Chromium serve as the core drivers for thyroid and glycemic metabolic pathways in this comprehensive multivitamin. These are complemented by a high-potency B-complex to support the foundational energy cycles of the body.

Energy expenditure and metabolic health appear well-supported by the use of all essential metabolic cofactors. This formulation ensures that the body's primary metabolic engines have the necessary nutrients for maintaining an active metabolic state.

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Ingredients

IngredientAmount per serving
Total Carbohydrates
1 Gram(s)
Vitamin A
12000 IU
Vitamin C (Calcium Ascorbate, Manganese Ascorbate, Zinc Ascorbate)
250 mg
Vitamin D3 (Cholecalciferol)
400 IU
Vitamin E (Vitamin E Succinate)
100 IU
Thiamine (Vitamin B1)
85 mg
Riboflavin (Vitamin B2)
85 mg
Niacinamide
85 mg
Vitamin B6 (Pyridoxine Hydrochloride)
85 mg
Folate (Folic Acid)
420 mcg
Vitamin B12 (Cyanocobalamin)
85 mcg
Biotin
85 mcg
Pantothenic Acid (Calcium D-Pantothenate)
85 mg
Calcium (Calcium Ascorbate, Calcium Citrate)
40 mg
Iron (Ferrous Fumarate)
11 mg
Iodine (Potassium Iodide)
150 mcg
Magnesium (Magnesium Citrate, Magnesium Oxide)
20 mg
Zinc (Zinc Ascorbate)
15 mg
Selenium (Selenium Amino Acid Chelate)
50 mcg
Copper (Copper Sebacate)
1 mg
Manganese (Manganese Ascorbate)
6 mg
Chromium (Chromium Amino Acid Chelate)
100 mcg
Molybdenum (Molybdenum Amino Acid Chelate)
100 mcg
Potassium (Potassium Citrate)
10 mg
Choline Bitartrate
85 mg
Para-Aminobenzoic Acid
85 mg
Inositol
85 mg
Bioflavonoid Complex
25 mg
Rutin
21 mg
Hesperidin
5 mg
Boron (Boron Amino Acid Chelate)
1 mg
Adults 18–50 Women
Report overview
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
This multivitamin delivers manganese in a bioavailable organic salt form at a safe and effective dosage. The label provides clear information on the elemental weight, and the product is offered at a very competitive price. It is a solid choice for those seeking quality minerals on a budget.
PABA · 85 mg OverallScore88
A Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB- Value
This daily one-a-day multivitamin contains 85 mg of PABA to support dermatological and metabolic health. It offers a convenient, high-potency nutrient profile for active adults.
Niacin · 85 mg OverallScore79
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyC Value
Mega-One is a one-per-day multivitamin from Source Naturals providing a high dose of 85 mg of niacinamide. it is a convenient option for daily health support without the risk of flushing.
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