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Sustained Release B-100

NOW
4.7
★ ★ ★ ★ ★
(5750 ratings)
Thiamin 100 mg
Niacin 100 mg
Riboflavin 100 mg
PABA 10 mg
Vitamin B5 100 mg
Vitamin B6 100 mg
Choline 35 mg
Product Image
Score90

A high-potency, sustained-release B-complex that provides a steady supply of energy-supporting nutrients.

How scoring works
Quantity:100 Tablet(s) • (100 servings)
Goals:
Energy
Metabolism Boost
Stress Relief
Skin Health
Cognitive Support
Brain Health

Score 90

A high-potency, sustained-release B-complex that provides a steady supply of energy-supporting nutrients.

How scoring works
$18.44($0.18 per serving)
Vitacost
$ 20.95
iHerb
$ 19.59
Amazon
$ 19.33
Daily Vita
$ 18.50
Pure Formulas
$ 19.04
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Analysis

This high-potency B-100 complex is designed to release its nutrients slowly over several hours. This can help the body absorb the vitamins more effectively and maintain more consistent energy levels throughout the day.

It provides 100 mg of most B vitamins, making it suitable for people under significant stress or those with very active lifestyles. The inclusion of choline and inositol rounds out the metabolic support offered by this formula.

Pros

  • Slow-release helps maintain vitamin levels
  • Potent 100 mg doses
  • Economical for a 100-day supply
  • Includes choline and PABA

Cons

  • Tablets are larger and may be hard to swallow
  • B6 dose is at the upper daily limit
  • Standard synthetic vitamin forms

Warnings

  • Monitor for nerve sensations like tingling
  • Expect bright yellow urine
  • Check with a professional for long-term use

Nutrient quality

79 High impact

The sustained-release format is ideal for maintaining steady levels of water-soluble B-vitamins in the bloodstream. However, the use of cyanocobalamin and high-dose pyridoxine are less advanced than bioactive alternatives.

Ingredient transparency

97 Highest impact

All B-vitamins are listed with their exact amounts, allowing for clear consumer assessment of the formula's potency. Labeling is specific, though the source of 'folate' is less clear than premium methylated versions.

Customer satisfaction

93 Highest impact

The product has a strong following with thousands of positive reviews confirming its efficacy for energy support. High user ratings and consistent performance reflect the brand's established reputation in the category.

Value for money

93 Highest impact

At 18 cents per serving, this sustained-release formula offers robust value for a high-potency B-complex. The price point is competitive considering the specialized delivery method and high nutrient concentrations.

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Goals

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

This B-complex includes a broad spectrum of vitamins like B1, B2, B3, B5, B6, and B12, all at 100 mg or mcg levels. These nutrients are essential for the Krebs cycle and the efficient conversion of carbohydrates and fats into energy.

The sustained-release tablet format may contribute to more stable nutrient levels throughout the day. This high-potency approach is well-suited for individuals with increased metabolic demands or those under significant stress.

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

Niacinamide and thiamine are provided in high doses within a sustained-release tablet to support consistent energy metabolism. These B-vitamins act as critical cofactors in the cellular pathways that produce energy from food.

The sustained-release format ensures a steady supply of nutrients throughout the metabolic cycles of the day. This B-complex offers high-potency cofactor support for maintaining a healthy and efficient metabolic rate.

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Stress Relief
Impact
High effect
B+ Goal FitC Strength of SupportB- CoverageB+ Formula Quality

This sustained-release B-complex provides high doses of metabolic cofactors to ensure consistent support for the nervous system throughout the day. Adrenal function and neurotransmitter synthesis are maintained through potent concentrations of B5 and B6.

The 100mg B6 dose is at the safety limit and carries a potential risk of neuropathy with long-term use. Synthetic forms are utilized, making this an affordable but less biologically active option for clinical stress relief.

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Skin Health
Impact
High effect
B Goal FitB Strength of SupportD+ CoverageB Formula Quality

Pantothenic Acid (Vitamin B5) and Niacinamide (Vitamin B3) are included at high levels to support sebum regulation and barrier health. These B-vitamins appear well-aligned with the goal of managing skin clarity and hydration.

The sustained-release format allows for a consistent supply of these nutrients throughout the day. These ingredients may contribute to skin resilience by supporting lipid synthesis and reducing transepidermal water loss.

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Cognitive Support
Impact
High effect
C+ Goal FitC- Strength of SupportD CoverageA Formula Quality

This sustained-release B-complex provides a steady supply of essential nutrients throughout the day to support brain energy metabolism. B-vitamins like thiamine and B6 are critical for maintaining neurological function and mental clarity during prolonged tasks.

The inclusion of choline bitartrate and inositol provides foundational support for neurotransmitter synthesis. This selection is effective for maintaining metabolic consistency, although the choline dose is relatively low compared to dedicated nootropic supplements.

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Brain Health
Impact
High effect
C+ Goal FitC Strength of SupportC CoverageB- Formula Quality

Potent metabolic support provides a steady supply of B-vitamins to maintain cerebral energy and neurotransmitter health throughout the day. This sustained-release approach aims to support consistent mental performance.

Ingredients consist of a high-strength B-100 complex including thiamine, riboflavin, and B6. This formula provides 100mg of most B-vitamins in a format designed for gradual absorption.

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Ingredients

IngredientAmount per serving
Thiamine (Thiamine Hydrochloride, Vitamin B1)
 100 mg
Riboflavin (Vitamin B2)
 100 mg
Niacin (Niacinamide, Vitamin B3)
 100 mg
Vitamin B6 (Pyridoxine Hydrochloride)
 100 mg
Folate
667 mcg DFE
Vitamin B12 (Cyanocobalamin)
 100 mcg
Biotin
100 mcg
Pantothenic Acid (Calcium Pantothenate)
 100 mg
Choline (Choline Bitartrate)
 35 mg
Inositol
100 mg
PABA
10 mg
Gluten Free Adults 18–50 Vegan Dairy Free Vegetarian
Report overview
Thiamin (Thiamine Hydrochloride, Vitamin B1) · 100 mg OverallScore88
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value
This sustained-release B-complex provides a steady supply of thiamin hydrochloride throughout the day. It is an excellent high-potency option for consistent metabolic support at a very low cost.
View ingredientView products
Niacin (Niacinamide, Vitamin B3) · 100 mg OverallScore87
A- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyC Value
This sustained-release B-complex is designed to provide a steady supply of nutrients throughout the day. It uses a non-flushing form of niacin, making it a comfortable choice for those with sensitive skin.
View ingredientView products
Riboflavin (Vitamin B2) · 100 mg OverallScore74
F Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value
This sustained-release tablet provides a continuous supply of 100mg of riboflavin throughout the day. While tablets are slower to absorb, the high dose and steady release profile are beneficial for metabolism.
View ingredientView products
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(588 ratings)
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Vitamin B-Complex 100

Solaray
4.7
★★★★★
(2484 ratings)
The large quantity of servings in this bulk package provides outstanding value for a high-potency B-100 complex. It offers comprehensive support for brain health and metabolism in a clean vegetable capsule format.
Other sellers (1)
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B-Complex '100'

Solgar
4.7
★★★★★
(496 ratings)
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Other sellers (1)
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Complete B 100 mg

Natural Factors
4.7
★★★★★
(1291 ratings)
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Other sellers (2)
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Coenzyme B-Complex Caps

Country Life
4.9
★★★★★
(35517 ratings)
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B-100 Complex with B2 Coenzyme

Nature's Way
4.7
★★★★★
(1068 ratings)
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Other sellers (3)
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Mega B-150 Balanced B-Complex

NaturesPlus
4.7
★★★★★
(704 ratings)
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Other sellers (1)
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