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Complete B 100 mg

Natural Factors
4.7
★ ★ ★ ★ ★
(1291 ratings)
PABA 100 mg
Thiamin 100 mg
Niacin 100 mg
Riboflavin 100 mg
Vitamin B5 100 mg
Vitamin B6 100 mg
Biotin 300 mcg
Product Image
Score93

A robust B-100 tablet with a more substantial dose of choline for brain and metabolic health.

How scoring works
Quantity:90 Tablet(s) • (90 servings)
Goals:
Brain Health
Stress Relief
Energy
Metabolism Boost
Cognitive Support

Score 93

A robust B-100 tablet with a more substantial dose of choline for brain and metabolic health.

How scoring works
$17.39($0.19 per serving)
Vitacost
$ 18.87
Amazon
$ 18.87
iHerb
$ 18.87
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Analysis

This supplement provides 100 mg of most B vitamins in a single daily tablet. It is built for people with high nutritional needs who want to support their nervous system and energy production throughout the day.

With 84 mg of choline bitartrate, it offers better brain and liver support than many other B-complexes. It also includes 300 mcg of biotin, which is a supportive level for maintaining healthy hair and skin.

Pros

  • High potency across the board
  • Better-than-average choline dose
  • Includes PABA and inositol
  • 90-day supply in one bottle

Cons

  • Tablet format is slower to digest
  • Uses synthetic cyanocobalamin B12
  • Folic acid instead of methylfolate

Warnings

  • Urine will likely turn bright yellow
  • Monitor for any nerve tingling
  • Do not exceed the recommended dose

Nutrient quality

84 Highest impact

Robust 100 mg doses across the major B vitamins provide potent support for daily energy and metabolic needs. Reliance on standard synthetic forms like folic acid and cyanocobalamin is appropriate for a value-focused product.

Ingredient transparency

98 Highest impact

All active ingredient amounts are clearly disclosed, ensuring full visibility into the formula's potency. No proprietary blends are used, which allows for a direct assessment of the nutrient profile's strengths.

Customer satisfaction

95 Highest impact

A strong average rating and significant review volume reflect consistent product quality and reliable performance. User satisfaction appears well-aligned with the product's role as a foundational energy and brain health supplement.

Value for money

95 Highest impact

The low cost per serving makes this a very competitive option for high-potency B-vitamin support. Each tablet provides significant nutritional value relative to the affordable purchase price.

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Goals

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

Thiamine, pyridoxine, and methylcobalamin are provided in high doses to support foundational brain energy and nerve health. These B-complex vitamins serve as essential cofactors for neurotransmitter synthesis and cognitive metabolism.

Potent 100mg doses of major B-vitamins ensure therapeutic levels for individuals needing foundational support. The addition of choline and inositol supports brain cell membrane integrity and signaling pathways.

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

Vitamin B5, B6, and B12 are provided in this high-potency 100 mg complex to support energy metabolism and the stress response. These B-vitamins are essential cofactors for the production of neurotransmitters like serotonin and dopamine.

The high-dosage formula serves as a metabolic buffer against the depleting effects of daily challenges. This comprehensive B-complex provides robust support for adrenal function and maintaining cognitive health under chronic pressure.

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

Conversion of carbohydrates and fats into energy relies on cofactors that assist mitochondrial respiration. This high-potency tablet targets metabolic fuel pathways to help sustain physical and mental vitality.

Key ingredients include 100 mg each of thiamine, riboflavin, and niacinamide.

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Metabolism Boost
Impact
Highest effect
B+ Goal FitB+ Strength of SupportC- CoverageA+ Formula Quality

Thiamine, riboflavin, and niacinamide are provided at 100mg to support foundational energy metabolism pathways. These B-vitamins act as essential enzymatic cofactors in the processing of carbohydrates, fats, and proteins.

The 100mg doses ensure that cellular energy cycles have ample enzymatic support for converting fuel into energy. This high-potency approach addresses the energy cofactor pathway with significant depth and reliability.

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Cognitive Support
Impact
High effect
C+ Goal FitB- Strength of SupportB- CoverageA Formula Quality

Foundational support for brain energy metabolism is provided through a high-potency B-complex.

Complete B 100 mg delivers high dosages of B-vitamins and Choline to aid daily mental performance.

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Skin Health
Impact
Moderate effect
C- Goal FitC- Strength of SupportD- CoverageC Formula Quality

Niacinamide and Pantothenic Acid provide high-potency support for cellular repair and the maintenance of the skin's lipid barrier. These ingredients are provided at significant dosages that may contribute to improved skin tone and moisture retention.

The 300 mcg dose of Biotin is suitable for general maintenance but falls short of the higher amounts used for structural enhancement. Because the product lacks key mineral cofactors like Zinc or structural building blocks like Collagen, its overall impact on skin elasticity is limited.

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Ingredients

IngredientAmount per serving
Thiamine (Thiamine Hydrochloride)
 100 mg
Riboflavin (Vitamin B2)
 100 mg
Niacin (Niacinamide)
 100 mg
Vitamin B6 (Pyridoxine Hydrochloride)
 100 mg
Folate
680 mcg DFE
Vitamin B12 (Cyanocobalamin)
 100 mcg
Biotin (Vitamin B7)
 300 mcg
Pantothenic Acid (Calcium Pantothenate)
 100 mg
Choline (Choline Bitartrate)
 84 mg
Calcium (Calcium Pantothenate, Dicalcium Phosphate)
 80 mg
Inositol
100 mg
Para-Aminobenzoic Acid
100 mg
Gluten Free Adults 18–50 Vegan Dairy Free Vegetarian
Report overview
PABA · 100 mg OverallScore93
A Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA- Value
Complete B provides a therapeutic 100mg dose of PABA at an outstanding price point. It features high label transparency and a clean formula, making it a top value pick.
View ingredientView products
Thiamin (Thiamine Hydrochloride) · 100 mg OverallScore88
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value
This comprehensive B-complex tablet includes a strong 100mg thiamin dose to aid energy production. It is a value-oriented supplement providing a full range of B-vitamins for metabolic health.
View ingredientView products
Niacin (Niacinamide) · 100 mg OverallScore84
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyC Value
This comprehensive B-complex provides a robust 100mg dose of niacinamide for overall metabolic health. It is a reliable and well-tolerated supplement for daily energy and nervous system support.
View ingredientView products
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