Source Naturals Mega-One™, 60 Tablets supplement bottle
Source Naturals

Mega-One™, 60 Tablets

What We Researched
32 active ingredients analyzed · 5 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
84
Product Score Good
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin A (as palmitate 2,100 mcg &beta-carotene 1,500 mcg) 3,600 mcg 400%
Vitamin C (from calcium & zinc ascorbates and manganese ascorbic acid complex) 250 mg 278%
Vitamin D-3 (as cholecalciferol) 10 mcg 50%
Vitamin E (as d-alpha-tocopheryl succinate) 67 mg 447%
Thiamin (vitamin B-1) 85 mg 7,083%
Riboflavin (vitamin B-2) 85 mg 6,538%
Niacin (as niacinamide) 85 mg 531%
Vitamin B-6 (as pyridoxine HCl) 85 mg 5,000%
Folate (as folic acid) (420 mcg folic acid) 714 mcg DFE 178%
Vitamin B-12 (as cyanocobalamin) 90 mcg 3,750%
Biotin 90 mcg 300%
Pantothenic Acid (as calcium D-Pantothenate) 85 mg 1,700%
Choline (as choline bitartrate) 33 mg 6%
Calcium (as ascorbate, d-pantothenate, & carbonate) 49 mg 4%
Iron (as iron fumarate) 11 mg 61%
Iodine (as potassium iodide) 150 mcg 100%
Magnesium (as magnesium oxide & citrate) 20 mg 5%
Zinc (as zinc ascorbate) 15 mg 136%
Selenium (as L-selenomethionine & sodium selenite) 50 mcg 90%
Copper (as copper citrate) 1 mg 111%
Manganese (as manganese ascorbic acid complex) 6 mg 260%
Chromium (as amino acid chelate) 100 mcg 286%
Molybdenum (as molybdenum amino acid complex) 100 mcg 222%
Potassium (as potassium citrate) 10 mg <1%
Choline Bitartrate 85 mg
PABA (para-aminobenzoic acid) 85 mg
Inositol 85 mg
Citrus Bioflavonoid Complex 25 mg
Rutin 21 mg
Hesperidin 5 mg
Boron (as boron amino acid complex) 1 mg
Bioavailability Very Good

Absorption Rating

  • Vitamin A (as palmitate 2,100 mcg &beta-carotene 1,500 mcg) Fair
  • Vitamin C (from calcium & zinc ascorbates and manganese ascorbic acid complex) Good
  • Vitamin D-3 (as cholecalciferol) Good
  • Vitamin E (as d-alpha-tocopheryl succinate) Good
  • Thiamin (vitamin B-1) Good
  • Riboflavin (vitamin B-2) Good
  • Niacin (as niacinamide) Good
  • Vitamin B-6 (as pyridoxine HCl) Fair
  • Folate (as folic acid) (420 mcg folic acid) Fair
  • Vitamin B-12 (as cyanocobalamin) Fair
  • Biotin Good
  • Pantothenic Acid (as calcium D-Pantothenate) Good
  • Choline (as choline bitartrate) Poor
  • Calcium (as ascorbate, d-pantothenate, & carbonate) Good
  • Iron (as iron fumarate) Fair
  • Iodine (as potassium iodide) Good
  • Magnesium (as magnesium oxide & citrate) Poor
  • Zinc (as zinc ascorbate) Fair
  • Selenium (as L-selenomethionine & sodium selenite) Good
  • Copper (as copper citrate) Good
  • Manganese (as manganese ascorbic acid complex) Good
  • Chromium (as amino acid chelate) Good
  • Molybdenum (as molybdenum amino acid complex) Good
  • Potassium (as potassium citrate) Good
  • Choline Bitartrate Poor
  • PABA (para-aminobenzoic acid) Good
  • Inositol Good
  • Rutin Fair
  • Hesperidin Good
  • Boron (as boron amino acid complex) Fair
Other Ingredients Excellent

Fillers & Additives

  • Stearic Acid
  • Hydroxypropyl Cellulose
  • Modified Cellulose Gum
  • Silica
  • Magnesium Stearate
Efficacy Good

Dosage Analysis

  • Vitamin A (as palmitate 2,100 mcg &beta-carotene 1,500 mcg) 3,600 mcg High
  • Vitamin C (from calcium & zinc ascorbates and manganese ascorbic acid complex) 250 mg Effective
  • Vitamin D-3 (as cholecalciferol) 10 mcg Under-dosed
  • Vitamin E (as d-alpha-tocopheryl succinate) 67 mg Effective
  • Thiamin (vitamin B-1) 85 mg Effective
  • Riboflavin (vitamin B-2) 85 mg Effective
  • Niacin (as niacinamide) 85 mg High
  • Vitamin B-6 (as pyridoxine HCl) 85 mg Effective
  • Folate (as folic acid) (420 mcg folic acid) 714 mcg DFE Effective
  • Vitamin B-12 (as cyanocobalamin) 90 mcg Effective
  • Biotin 90 mcg Effective
  • Pantothenic Acid (as calcium D-Pantothenate) 85 mg Effective
  • Choline (as choline bitartrate) 33 mg Under-dosed
  • Calcium (as ascorbate, d-pantothenate, & carbonate) 49 mg Under-dosed
  • Iron (as iron fumarate) 11 mg Effective
  • Iodine (as potassium iodide) 150 mcg Effective
  • Magnesium (as magnesium oxide & citrate) 20 mg Under-dosed
  • Zinc (as zinc ascorbate) 15 mg Effective
  • Selenium (as L-selenomethionine & sodium selenite) 50 mcg Effective
  • Copper (as copper citrate) 1 mg Effective
  • Manganese (as manganese ascorbic acid complex) 6 mg High
  • Chromium (as amino acid chelate) 100 mcg Effective
  • Molybdenum (as molybdenum amino acid complex) 100 mcg Effective
  • Potassium (as potassium citrate) 10 mg Under-dosed
  • Choline Bitartrate 85 mg Under-dosed
  • PABA (para-aminobenzoic acid) 85 mg Under-dosed
  • Inositol 85 mg Under-dosed
  • Rutin 21 mg Under-dosed
  • Hesperidin 5 mg Under-dosed
  • Boron (as boron amino acid complex) 1 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Total Carbohydrate 0.5 g <1%*
Vitamin A (as palmitate 2,100 mcg &beta-carotene 1,500 mcg) 3,600 mcg 400%
Vitamin C (from calcium & zinc ascorbates and manganese ascorbic acid complex) 250 mg 278%
Vitamin D-3 (as cholecalciferol) 10 mcg 50%
Vitamin E (as d-alpha-tocopheryl succinate) 67 mg 447%
Thiamin (vitamin B-1) 85 mg 7,083%
Riboflavin (vitamin B-2) 85 mg 6,538%
Niacin (as niacinamide) 85 mg 531%
Vitamin B-6 (as pyridoxine HCl) 85 mg 5,000%
Folate (as folic acid) (420 mcg folic acid) 714 mcg DFE 178%
Vitamin B-12 (as cyanocobalamin) 90 mcg 3,750%
Biotin 90 mcg 300%
Pantothenic Acid (as calcium D-Pantothenate) 85 mg 1,700%
Choline (as choline bitartrate) 33 mg 6%
Calcium (as ascorbate, d-pantothenate, & carbonate) 49 mg 4%
Iron (as iron fumarate) 11 mg 61%
Iodine (as potassium iodide) 150 mcg 100%
Magnesium (as magnesium oxide & citrate) 20 mg 5%
Zinc (as zinc ascorbate) 15 mg 136%
Selenium (as L-selenomethionine & sodium selenite) 50 mcg 90%
Copper (as copper citrate) 1 mg 111%
Manganese (as manganese ascorbic acid complex) 6 mg 260%
Chromium (as amino acid chelate) 100 mcg 286%
Molybdenum (as molybdenum amino acid complex) 100 mcg 222%
Potassium (as potassium citrate) 10 mg <1%
Choline Bitartrate 85 mg
PABA (para-aminobenzoic acid) 85 mg
Inositol 85 mg
Citrus Bioflavonoid Complex 25 mg
Rutin 21 mg
Hesperidin 5 mg
Boron (as boron amino acid complex) 1 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Hydroxypropyl Cellulose Safe

Binds tablet ingredients and can form tablet coatings.

Modified Cellulose Gum Generally_safe

It is used to improve the texture and stability of products.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$12$11$10$9$8 Mar 12 $10.00
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
Source Naturals

Founded 1982 · Scotts Valley, CA, USA · 837 products · sourcenaturals.com/

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source
Related Supplements
Frequently Asked Questions
Is Source Naturals Mega-One™, 60 Tablets a good supplement?

Source Naturals Mega-One™, 60 Tablets received a product quality score of 84/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 32 active ingredients Of the 5 inactive ingredients, 4 are rated safe and 0 are flagged for review. The manufacturer, Source Naturals, holds a brand trust score of 66/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Source Naturals Mega-One™, 60 Tablets?

Source Naturals Mega-One™, 60 Tablets contains 32 active ingredients: Total Carbohydrate (0.5 g), Vitamin A (as palmitate 2,100 mcg &beta-carotene 1,500 mcg) (3,600 mcg), Vitamin C (from calcium & zinc ascorbates and manganese ascorbic acid complex) (250 mg), Vitamin D-3 (as cholecalciferol) (10 mcg), Vitamin E (as d-alpha-tocopheryl succinate) (67 mg), Thiamin (vitamin B-1) (85 mg), and 26 more. Notable high-dose ingredients include Vitamin A at 400% DV, Vitamin C at 278% DV, Vitamin E at 447% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Source Naturals Mega-One™, 60 Tablets safe to take?

Source Naturals Mega-One™, 60 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 Source Naturals a trustworthy supplement brand?

Source Naturals receives a brand trust score of 66/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1982 and headquartered in Scotts Valley, CA, USA, the company offers 837 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

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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.