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B-100 Complex
21st Century
4.7
★ ★ ★ ★ ★
(4499 ratings)
Thiamin 100 mg
Riboflavin 100 mg
Vitamin B5 100 mg
Vitamin B12 100 mcg
Niacin 100 mg
Biotin 100 mcg
Vitamin B6 100 mg
Score 88.0
This 21st Century B-100 Complex offers a complete spectrum of high-potency B vitamins at a very competitive price, making it an excellent budget-friendly choice for comprehensive B-vitamin support. Its main drawback is the use of less bioavailable forms of certain B vitamins, which might be a consideration for those with specific metabolic needs.
Quantity: 60 Tablet(s)Servings size: 1 Tablet(s) (60 servings)
Selected goals:
Other goals:
Energy
Brain Health
Cognitive Support
Cardiovascular Support
Testosterone Support
leaderboard Score 88.0
This 21st Century B-100 Complex offers a complete spectrum of high-potency B vitamins at a very competitive price, making it an excellent budget-friendly choice for comprehensive B-vitamin support. Its main drawback is the use of less bioavailable forms of certain B vitamins, which might be a consideration for those with specific metabolic needs.
The 21st Century B-100 Complex is a high-potency B-vitamin supplement designed to support a wide array of bodily functions, including energy production, brain health, and metabolism. It delivers 100mg or 100mcg of most B vitamins, which is a substantial dose, often exceeding daily recommended values for maintenance and aiming for therapeutic effects. The product's main strength lies in its comprehensive B-vitamin profile and exceptionally low price point of $0.13 per serving, making it highly accessible. However, it uses common, synthetic forms of Vitamin B12 (Cyanocobalamin) and Vitamin B6 (Pyridoxine Hydrochloride). While effective for most individuals, some people, particularly those with MTHFR gene variations, may benefit more from active forms like methylcobalamin and pyridoxal-5-phosphate (P-5-P). Despite this, its high review count indicates broad user satisfaction and perceived efficacy for its intended goals.
- Offers a comprehensive blend of all eight essential B vitamins.
- Provides high potency, with most B vitamins at 100mg/mcg, ensuring robust support.
- Exceptional value for money, with a very low price per serving ($0.13).
- Convenient tablet form with 60 servings per bottle.
- Uses cyanocobalamin for B12, which is a synthetic form and less bioavailable than methylcobalamin for some individuals.
- Contains pyridoxine hydrochloride for B6, which is not the active P-5-P form and can be less ideal for long-term high dosage.
- High dosages might be excessive for individuals with no deficiency or those sensitive to high nutrient levels.
- High doses of B vitamins can cause harmless bright yellow discoloration of urine.
- Individuals with specific health conditions, or those taking medications, should consult a healthcare professional due to the high dosages.
- Prolonged intake of high doses of pyridoxine hydrochloride (Vitamin B6) may, in rare cases, lead to peripheral neuropathy.
$7.94($0.13 per serving)
 Pure Formulas | $ 7.94 | |
 iHerb | $ 9.49 |
| Ingredient | Amount per serving |
|---|---|
| Vitamin B1 (Thiamine Mononitrate) | 100 mg |
| Vitamin B2 (Riboflavin) | 100 mg |
| Niacin (Niacinamide) | 100 mg |
| Vitamin B6 (Pyridoxine Hydrochloride) | 100 mg |
| Folate | 667 mcg DFE |
| Vitamin B12 (Cyanocobalamin) | 100 mcg |
| Biotin | 100 mcg |
| Pantothenic Acid (D-Calcium Pantothenate) | 100 mg |
| Calcium (Dicalcium Phosphate, Calcium Carbonate) | 160 mg |
Categories
Niacin 90.0
Delivering 100mg of Niacin as Niacinamide is a strong point, as this form typically avoids the 'niacin flush' sensation common with nicotinic acid, making it more comfortable for users while still supporting energy and cellular health.
Thiamin 90.0
The 100mg of Thiamine Mononitrate is an excellent and effective dosage for Vitamin B1, crucial for carbohydrate metabolism and nerve function. This form is well-absorbed and widely used in supplements.
Biotin 90.0
The inclusion of 100mcg of Biotin is a standard and effective dose, supporting metabolic processes and contributing significantly to hair, skin, and nail health, aligning well with common uses of B-complexes.
Goals
Energy 90.0
B vitamins are crucial coenzymes in the metabolic pathways that convert food into energy. This B-100 complex provides ample amounts of all B vitamins, highly supporting energy production and combating fatigue.
Metabolism Boost 90.0
B vitamins are indispensable cofactors for virtually every metabolic process in the body, particularly in the breakdown of carbohydrates, fats, and proteins. This B-100 complex, with its high concentrations, offers strong support for efficient metabolism.
General Health 90.0
As a comprehensive B-complex, this product provides essential vitamins that are cofactors for a vast number of enzymatic reactions across all body systems. This broad support makes it highly beneficial for maintaining overall physiological functions and general well-being.
Recommended Alternatives
88 Value 
B-100
NOW
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This B-100 complex from NOW Foods is a highly reputable and trusted brand known for its quality and value. It offers a comparable full spectrum of B vitamins at 100mg/mcg potencies, including beneficial co-factors like PABA, Inositol, and Choline. It provides excellent overall value, often at a slightly more competitive price per serving than the original product.
85 Value 
B-Complex '100'
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Solgar is a well-established brand with a strong reputation for high-quality and pure supplements. This B-100 complex provides comprehensive B vitamin support at 100mg/mcg potency for most B vitamins, along with Choline and Inositol. It offers a premium brand experience and trusted formulation at a price point that presents better value per serving than the original product.
78 Value 
B 100 Complex
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4.7
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(396 ratings)
This product is a direct competitor to the original B-100 complex, offering the same 100mg/mcg potencies for most B vitamins. It provides similar comprehensive B vitamin support to the original product but often at a slightly lower price per serving, making it a marginally better value choice for those seeking a standard B-100 supplement.
98 Performance 
B-Complex
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This B-complex excels in bioavailability and comprehensiveness, utilizing active forms of B12 (Methylcobalamin), Folate (L-Methylfolate), B6 (Pyridoxal 5-Phosphate), and B2 (Riboflavin 5-Phosphate), along with Benfotiamine for B1. Nutritionists highly recommend these active forms for optimal absorption. It also includes organic whole food blends, probiotics, and adaptogens for a holistic approach to health.
95 Performance 
Mega B-150 Balanced B-Complex
NaturesPlus
4.7
★★★★★
(325 ratings)
This product offers even higher potencies (150mg/mcg for most B vitamins) and critically includes the active, more bioavailable forms of B12 (Methylcobalamin) and Folate (L-5-Methyltetrahydrofolate), which are often preferred by nutritionists for better absorption and efficacy, especially for individuals with MTHFR gene variations. It's a robust and superior formulation.
90 Performance 
High Potency Vitamin B Complex
Lake Avenue Nutrition
4.5
★★★★★
(5973 ratings)
This alternative provides a high-potency B-complex featuring active forms of B12 (Methylcobalamin) and Folate (6S)-5-Methyltetrahydrofolic Acid, Glucosamine Salt), which offer superior absorption. It also includes both common and active forms of B6 (Pyridoxine Hydrochloride and Pyridoxal 5-Phosphate) and Niacin (Nicotinic Acid and Niacinamide), providing a more complete and bioavailable spectrum compared to the original product.
70 Budget 
B-50 Complex
21st Century
4.7
★★★★★
(8446 ratings)
This product offers a full B-complex, similar to the B-100, but with half the potency (50mg/mcg) for most vitamins. It's significantly more cost-effective per serving, making it a good choice for those who need a comprehensive B-complex but prefer lower doses or are on a tighter budget.
65 Budget 
B-Complex plus Vitamin C
21st Century
4.7
★★★★★
(24336 ratings)
While notably more affordable per serving, the B vitamin potencies are lower than the B-100 complex. However, it includes a substantial amount of Vitamin C (300mg), which is often beneficial for stress support, making it a practical, inexpensive option for general daily B vitamin support.
60 Budget 
B Complex
Sundown
4.7
★★★★★
(18319 ratings)
This is a very cost-effective alternative. It provides a basic B vitamin complex, but at significantly lower potencies compared to the original B-100 product. It's suitable for individuals looking for minimal B vitamin supplementation at the lowest possible cost.
88 Value
B-100
NOW
4.8
★★★★★
(9362 ratings)
This B-100 complex from NOW Foods is a highly reputable and trusted brand known for its quality and value. It offers a comparable full spectrum of B vitamins at 100mg/mcg potencies, including beneficial co-factors like PABA, Inositol, and Choline. It provides excellent overall value, often at a slightly more competitive price per serving than the original product.
85 Value
B-Complex '100'
Solgar
4.7
★★★★★
(15200 ratings)
Solgar is a well-established brand with a strong reputation for high-quality and pure supplements. This B-100 complex provides comprehensive B vitamin support at 100mg/mcg potency for most B vitamins, along with Choline and Inositol. It offers a premium brand experience and trusted formulation at a price point that presents better value per serving than the original product.
78 Value
B 100 Complex
Spring Valley
4.7
★★★★★
(396 ratings)
This product is a direct competitor to the original B-100 complex, offering the same 100mg/mcg potencies for most B vitamins. It provides similar comprehensive B vitamin support to the original product but often at a slightly lower price per serving, making it a marginally better value choice for those seeking a standard B-100 supplement.
98 Performance
B-Complex
Paradise Earth's Blend
4.7
★★★★★
(4459 ratings)
This B-complex excels in bioavailability and comprehensiveness, utilizing active forms of B12 (Methylcobalamin), Folate (L-Methylfolate), B6 (Pyridoxal 5-Phosphate), and B2 (Riboflavin 5-Phosphate), along with Benfotiamine for B1. Nutritionists highly recommend these active forms for optimal absorption. It also includes organic whole food blends, probiotics, and adaptogens for a holistic approach to health.
95 Performance
Mega B-150 Balanced B-Complex
NaturesPlus
4.7
★★★★★
(325 ratings)
This product offers even higher potencies (150mg/mcg for most B vitamins) and critically includes the active, more bioavailable forms of B12 (Methylcobalamin) and Folate (L-5-Methyltetrahydrofolate), which are often preferred by nutritionists for better absorption and efficacy, especially for individuals with MTHFR gene variations. It's a robust and superior formulation.
90 Performance
High Potency Vitamin B Complex
Lake Avenue Nutrition
4.5
★★★★★
(5973 ratings)
This alternative provides a high-potency B-complex featuring active forms of B12 (Methylcobalamin) and Folate (6S)-5-Methyltetrahydrofolic Acid, Glucosamine Salt), which offer superior absorption. It also includes both common and active forms of B6 (Pyridoxine Hydrochloride and Pyridoxal 5-Phosphate) and Niacin (Nicotinic Acid and Niacinamide), providing a more complete and bioavailable spectrum compared to the original product.