Source Naturals Men's Life Force Daily Multivitamin supplement bottle
Source Naturals

Men's Life Force Daily Multivitamin

What We Researched
24 active ingredients analyzed · 5 inactive ingredients decoded · 1 brand certification checked · 1 retailer compared · Last updated: Mar 2026
88
Product Score Good
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin A (as beta-carotene 3,000 mcg & palmitate 750 mcg) 3,750 mcg 417%
Vitamin C (as ascorbic acid & ascorbyl palmitate) 480 mg 534%
Vitamin D-3 (as cholecalciferol) 10 mcg 50%
Vitamin E (as d-alpha tocopheryl succinate) 120 mg 800%
Vitamin K-1 (as phytonadione) 120 mcg 100%
Thiamin (vitamin B-1) 50 mg 4,166%
Riboflavin (vitamin B-2) 50 mg 3,846%
Niacin (niacinamide) 50 mg 312%
Vitamin B-6 (as pyridoxine HCl & pyridoxal-5-phosphate (Coenzymated™) 50 mg 2,941%
Folate (as folic acid & calcium folinate) (300 mcg folic acid) 680 mcg DFE 170%
Vitamin B-12 (as methylcobalamin) 400 mcg 16,667%
Biotin 400 mcg 1,333%
Pantothenic Acid (as calcium d-pantothenate) 50 mg 1,000%
Iodine (as kelp) 45 mcg 30%
Calcium (as calcium carbonate, dicalcium 117 mg 9%
Calcium malate, calcium citrate & naturally occurring)
Iron (as ferrous fumarate) 100 mcg 6%
Magnesium (as magnesium amino acid complex) 100 mg 24%
Zinc (as zinc methionine sulfate complex [OptiZinc®] & zinc citrate) 15 mg 136%
Selenium (as L-selenomethionine & sodium selenite) 50 mcg 91%
Copper (as copper citrate) 1 mg 111%
Manganese (as manganese citrate) 1 mg 43%
Chromium (as chromium polynicotinate [ChromeMate®] & picolinate) 100 mcg 285%
Molybdenum (as molybdenum amino acid complex) 100 mcg 222%
Bioavailability Very Good

Absorption Rating

  • Vitamin A (as beta-carotene 3,000 mcg & palmitate 750 mcg) Fair
  • Vitamin C (as ascorbic acid & ascorbyl palmitate) Fair
  • Vitamin D-3 (as cholecalciferol) Good
  • Vitamin E (as d-alpha tocopheryl succinate) Good
  • Vitamin K-1 (as phytonadione) Fair
  • Thiamin (vitamin B-1) Good
  • Riboflavin (vitamin B-2) Good
  • Niacin (niacinamide) Good
  • Vitamin B-6 (as pyridoxine HCl & pyridoxal-5-phosphate (Coenzymated™) Good
  • Folate (as folic acid & calcium folinate) (300 mcg folic acid) Good
  • Vitamin B-12 (as methylcobalamin) Good
  • Biotin Good
  • Pantothenic Acid (as calcium d-pantothenate) Good
  • Iodine (as kelp) Good
  • Calcium (as calcium carbonate, dicalcium Fair
  • Calcium malate, calcium citrate & naturally occurring) Good
  • Iron (as ferrous fumarate) Fair
  • Magnesium (as magnesium amino acid complex) Good
  • Zinc (as zinc methionine sulfate complex [OptiZinc®] & zinc citrate) Good
  • Selenium (as L-selenomethionine & sodium selenite) Good
  • Copper (as copper citrate) Good
  • Manganese (as manganese citrate) Good
  • Chromium (as chromium polynicotinate [ChromeMate®] & picolinate) Good
  • Molybdenum (as molybdenum amino acid complex) Good
Other Ingredients Excellent

Fillers & Additives

  • Dibasic Calcium Phosphate
  • Microcrystalline Cellulose
  • Stearic Acid
  • Modified Cellulose Gum
  • Silica
Efficacy Good

Dosage Analysis

  • Vitamin A (as beta-carotene 3,000 mcg & palmitate 750 mcg) 3,750 mcg High
  • Vitamin C (as ascorbic acid & ascorbyl palmitate) 480 mg Effective
  • Vitamin D-3 (as cholecalciferol) 10 mcg Under-dosed
  • Vitamin E (as d-alpha tocopheryl succinate) 120 mg Effective
  • Vitamin K-1 (as phytonadione) 120 mcg Effective
  • Thiamin (vitamin B-1) 50 mg Effective
  • Riboflavin (vitamin B-2) 50 mg Effective
  • Niacin (niacinamide) 50 mg High
  • Vitamin B-6 (as pyridoxine HCl & pyridoxal-5-phosphate (Coenzymated™) 50 mg Effective
  • Folate (as folic acid & calcium folinate) (300 mcg folic acid) 680 mcg DFE Effective
  • Vitamin B-12 (as methylcobalamin) 400 mcg Effective
  • Biotin 400 mcg Effective
  • Pantothenic Acid (as calcium d-pantothenate) 50 mg Effective
  • Iodine (as kelp) 45 mcg Under-dosed
  • Calcium (as calcium carbonate, dicalcium 117 mg Under-dosed
  • Iron (as ferrous fumarate) 100 mcg Under-dosed
  • Magnesium (as magnesium amino acid complex) 100 mg Under-dosed
  • Zinc (as zinc methionine sulfate complex [OptiZinc®] & zinc citrate) 15 mg Effective
  • Selenium (as L-selenomethionine & sodium selenite) 50 mcg Effective
  • Copper (as copper citrate) 1 mg Effective
  • Manganese (as manganese citrate) 1 mg Under-dosed
  • Chromium (as chromium polynicotinate [ChromeMate®] & picolinate) 100 mcg Effective
  • Molybdenum (as molybdenum amino acid complex) 100 mcg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin A (as beta-carotene 3,000 mcg & palmitate 750 mcg) 3,750 mcg 417%
Vitamin C (as ascorbic acid & ascorbyl palmitate) 480 mg 534%
Vitamin D-3 (as cholecalciferol) 10 mcg 50%
Vitamin E (as d-alpha tocopheryl succinate) 120 mg 800%
Vitamin K-1 (as phytonadione) 120 mcg 100%
Thiamin (vitamin B-1) 50 mg 4,166%
Riboflavin (vitamin B-2) 50 mg 3,846%
Niacin (niacinamide) 50 mg 312%
Vitamin B-6 (as pyridoxine HCl & pyridoxal-5-phosphate (Coenzymated™) 50 mg 2,941%
Folate (as folic acid & calcium folinate) (300 mcg folic acid) 680 mcg DFE 170%
Vitamin B-12 (as methylcobalamin) 400 mcg 16,667%
Biotin 400 mcg 1,333%
Pantothenic Acid (as calcium d-pantothenate) 50 mg 1,000%
Iodine (as kelp) 45 mcg 30%
Calcium (as calcium carbonate, dicalcium 117 mg 9%
Calcium malate, calcium citrate & naturally occurring)
Iron (as ferrous fumarate) 100 mcg 6%
Magnesium (as magnesium amino acid complex) 100 mg 24%
Zinc (as zinc methionine sulfate complex [OptiZinc®] & zinc citrate) 15 mg 136%
Selenium (as L-selenomethionine & sodium selenite) 50 mcg 91%
Copper (as copper citrate) 1 mg 111%
Manganese (as manganese citrate) 1 mg 43%
Chromium (as chromium polynicotinate [ChromeMate®] & picolinate) 100 mcg 285%
Molybdenum (as molybdenum amino acid complex) 100 mcg 222%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Dibasic Calcium Phosphate Generally_safe

It is used as a filler and to improve tablet hardness.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

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.

Price Comparison

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 Men's Life Force Daily Multivitamin a good supplement?

Source Naturals Men's Life Force Daily Multivitamin received a product quality score of 88/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 24 active ingredients with 15 servings per container. Of the 5 inactive ingredients, 3 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 Men's Life Force Daily Multivitamin?

Source Naturals Men's Life Force Daily Multivitamin contains 24 active ingredients: Vitamin A (as beta-carotene 3,000 mcg & palmitate 750 mcg) (3,750 mcg), Vitamin C (as ascorbic acid & ascorbyl palmitate) (480 mg), Vitamin D-3 (as cholecalciferol) (10 mcg), Vitamin E (as d-alpha tocopheryl succinate) (120 mg), Vitamin K-1 (as phytonadione) (120 mcg), Thiamin (vitamin B-1) (50 mg), and 18 more. Notable high-dose ingredients include Vitamin A at 417% DV, Vitamin C at 534% DV, Vitamin E at 800% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Source Naturals Men's Life Force Daily Multivitamin safe to take?

Source Naturals Men's Life Force Daily Multivitamin 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.

How much vitamin d3 should i take daily?

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 does vitamin d do?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 250,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

How much vitamin d3 per day for a woman?

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.

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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.