Natural Factors Complete B, 100 mg, 90 Tablets supplement bottle
Natural Factors

Complete B, 100 mg, 90 Tablets

What We Researched
12 active ingredients analyzed · 4 inactive ingredients decoded · 5 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
83
Product Score Good
88
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Thiamine (as thiamine mononitrate) 100 mg 8,333%
Riboflavin (vitamin B2) 100 mg 7,692%
Niacin (as niacinamide) 100 mg 625%
Vitamin B6 (as pyridoxine hydrochloride) 100 mg 5,882%
Folic Acid 400 mcg 170%
Vitamin B12 (as cyanocobalamin) 100 mcg 4,167%
Biotin (vitamin B7) 300 mcg 1000%
Pantothenic Acid (as calcium pantothenate) 100 mg 2,000%
Choline (bitartrate) 84 mg 15%
Calcium (di-calcium phosphate,calcium pantothenate) 80 mg 6%
Inositol 100 mg *
Para Aminobenzoic Acid 100 mg *
Bioavailability Good

Absorption Rating

  • Thiamine (as thiamine mononitrate) Fair
  • Riboflavin (vitamin B2) Good
  • Niacin (as niacinamide) Good
  • Vitamin B6 (as pyridoxine hydrochloride) Fair
  • Folic Acid Fair
  • Vitamin B12 (as cyanocobalamin) Fair
  • Biotin (vitamin B7) Good
  • Pantothenic Acid (as calcium pantothenate) Good
  • Choline (bitartrate) Poor
  • Calcium (di-calcium phosphate,calcium pantothenate) Fair
  • Inositol Good
  • Para Aminobenzoic Acid Good
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Coating(cellulose gum,carbohydrate gum[cellulose],glycerin)
  • Stearic Acid
  • Magnesium stearate(vegetable grade)
Efficacy Good

Dosage Analysis

  • Thiamine (as thiamine mononitrate) 100 mg Effective
  • Riboflavin (vitamin B2) 100 mg Effective
  • Niacin (as niacinamide) 100 mg High
  • Vitamin B6 (as pyridoxine hydrochloride) 100 mg Effective
  • Folic Acid 400 mcg Effective
  • Vitamin B12 (as cyanocobalamin) 100 mcg Effective
  • Biotin (vitamin B7) 300 mcg Effective
  • Pantothenic Acid (as calcium pantothenate) 100 mg Effective
  • Choline (bitartrate) 84 mg Under-dosed
  • Calcium (di-calcium phosphate,calcium pantothenate) 80 mg Under-dosed
  • Inositol 100 mg Under-dosed
  • Para Aminobenzoic Acid 100 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Thiamine (as thiamine mononitrate) 100 mg 8,333%
Riboflavin (vitamin B2) 100 mg 7,692%
Niacin (as niacinamide) 100 mg 625%
Vitamin B6 (as pyridoxine hydrochloride) 100 mg 5,882%
Folic Acid 400 mcg 170%
Vitamin B12 (as cyanocobalamin) 100 mcg 4,167%
Biotin (vitamin B7) 300 mcg 1000%
Pantothenic Acid (as calcium pantothenate) 100 mg 2,000%
Choline (bitartrate) 84 mg 15%
Calcium (di-calcium phosphate,calcium pantothenate) 80 mg 6%
Inositol 100 mg *
Para Aminobenzoic Acid 100 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

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

Coating(cellulose gum,carbohydrate gum[cellulose],glycerin) Unknown
Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Magnesium stearate(vegetable grade) Unknown

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$21$20$19$18$17 Mar 12 $18.87
Vitacost

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Natural Factors

Founded 1950 · Coquitlam, British Columbia, Canada · 390 products · naturalfactors.com

Certifications

5 certifications
B Corp Certified Verified Source
Usp Verified Verified Source
Fda Gmp Inspections Verified Source
Non Gmo Project Verified Source
Usda Organic Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Verified Source

Violation History

5 incidents
Prop 65 Lead2025-10-31Source
Recall Hi Potency B Complex, RevitalX, Super Multi® IRON FREE2024-07-19Source
Lawsuit Products labeled as containing glucosamine sulfate did not contain the ingredient.2021Source
Prop 65 Lead2016-01-13Source
Recall Natural Factors L-Arginine 500mg2006-04-05Source
Related Supplements
Frequently Asked Questions
Is Natural Factors Complete B, 100 mg a good supplement?

Natural Factors Complete B, 100 mg, 90 Tablets received a product quality score of 83/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 12 active ingredients with 90 servings per container. Of the 4 inactive ingredients, 2 are rated safe and 0 are flagged for review. The manufacturer, Natural Factors, holds a brand trust score of 88/100 with 5 verified certifications including B Corp Certified, Usp Verified, Fda Gmp Inspections, Non Gmo Project.

What are the ingredients in Natural Factors Complete B, 100 mg?

Natural Factors Complete B, 100 mg contains 12 active ingredients: Thiamine (as thiamine mononitrate) (100 mg), Riboflavin (vitamin B2) (100 mg), Niacin (as niacinamide) (100 mg), Vitamin B6 (as pyridoxine hydrochloride) (100 mg), Folic Acid (400 mcg), Vitamin B12 (as cyanocobalamin) (100 mcg), and 6 more. Notable high-dose ingredients include Thiamine at 8,333% DV, Riboflavin at 7,692% DV, Niacin at 625% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Natural Factors Complete B, 100 mg safe to take?

Natural Factors Complete B, 100 mg, 90 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 Natural Factors a trustworthy supplement brand?

Natural Factors receives a brand trust score of 88/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1950 and headquartered in Coquitlam, British Columbia, Canada, the company offers 390 products in their lineup. They hold 5 verified certifications including B Corp Certified, Usp Verified, Fda Gmp Inspections, Non Gmo Project. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Natural Factors has 5 historical regulatory incidents on record, which are factored into the trust score.

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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.