B-50 Complex, Prolonged Release, 60 Tablets
Product Analysis
Transparency Excellent
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Thiamin (as Thiamin Mononitrate, Vitamin B-1) | 50 mg | 4,167% |
| Riboflavin (Vitamin B-2) | 50 mg | 3,846% |
| Niacin (as Niacinamide) | 50 mg | 313% |
| Vitamin B-6 (as Pyridoxine HCl) | 50 mg | 2,941% |
| Folate (400 mcg Folic Acid) | 667 mcg DFE | 167% |
| Vitamin B-12 (as Cyanocobalamin) | 50 mcg | 2,083% |
| Biotin | 50 mcg | 167% |
| Pantothenic Acid (as d-Calcium Pantothenate) | 10 mg | 200% |
| Calcium (as Calcium Carbonate) | 124 mg | 10% |
Bioavailability Good
Absorption Rating
- Thiamin (as Thiamin Mononitrate, Vitamin B-1) Fair
- Riboflavin (Vitamin B-2) Good
- Niacin (as Niacinamide) Good
- Vitamin B-6 (as Pyridoxine HCl) Fair
- Folate (400 mcg Folic Acid) Fair
- Vitamin B-12 (as Cyanocobalamin) Fair
- Biotin Good
- Pantothenic Acid (as d-Calcium Pantothenate) Good
- Calcium (as Calcium Carbonate) Fair
Other Ingredients Very Good
Fillers & Additives
- Cellulose
- Stearic Acid
- Hydroxypropyl Methylcellulose
- Silicon Dioxide
- Gum Acacia
- Dicalcium Phosphate
- Ethylcellulose
- Magnesium Silicate
- Magnesium Stearate
- Polyethylene Glycol Low
- Polysorbate Medium
- Polyvinyl Alcohol
Efficacy Very Good
Dosage Analysis
- Thiamin (as Thiamin Mononitrate, Vitamin B-1) 50 mg Effective
- Riboflavin (Vitamin B-2) 50 mg Effective
- Niacin (as Niacinamide) 50 mg High
- Vitamin B-6 (as Pyridoxine HCl) 50 mg Effective
- Folate (400 mcg Folic Acid) 667 mcg DFE Effective
- Vitamin B-12 (as Cyanocobalamin) 50 mcg Effective
- Biotin 50 mcg Effective
- Pantothenic Acid (as d-Calcium Pantothenate) 10 mg Effective
- Calcium (as Calcium Carbonate) 124 mg Under-dosed
Supplement Facts
| Ingredient | Amount | % Daily Value |
|---|---|---|
| Thiamin (as Thiamin Mononitrate, Vitamin B-1) | 50 mg | 4,167% |
| Riboflavin (Vitamin B-2) | 50 mg | 3,846% |
| Niacin (as Niacinamide) | 50 mg | 313% |
| Vitamin B-6 (as Pyridoxine HCl) | 50 mg | 2,941% |
| Folate (400 mcg Folic Acid) | 667 mcg DFE | 167% |
| Vitamin B-12 (as Cyanocobalamin) | 50 mcg | 2,083% |
| Biotin | 50 mcg | 167% |
| Pantothenic Acid (as d-Calcium Pantothenate) | 10 mg | 200% |
| Calcium (as Calcium Carbonate) | 124 mg | 10% |
Other Ingredients
Cellulose Safe
Stearic Acid Safe
Silicon Dioxide Safe
Gum Acacia Safe
Dicalcium Phosphate Safe
Ethylcellulose Generally_safe
Magnesium Silicate Generally_safe
Magnesium Stearate Safe
Polyethylene Glycol Caution
Polysorbate Generally_safe
Polyvinyl Alcohol Generally_safe
Price Comparison
Price History
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Is 21st Century B-50 Complex, Prolonged Release a good supplement?
21st Century B-50 Complex, Prolonged Release, 60 Tablets received a product quality score of 84/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 9 active ingredients Of the 12 inactive ingredients, 7 are rated safe and 1 are flagged for review. The manufacturer, 21st Century, holds a brand trust score of 76/100 with 2 verified certifications including Consumerlab, Nsf Gmp.
What are the ingredients in 21st Century B-50 Complex, Prolonged Release?
21st Century B-50 Complex, Prolonged Release contains 9 active ingredients: Thiamin (as Thiamin Mononitrate, Vitamin B-1) (50 mg), Riboflavin (Vitamin B-2) (50 mg), Niacin (as Niacinamide) (50 mg), Vitamin B-6 (as Pyridoxine HCl) (50 mg), Folate (400 mcg Folic Acid) (667 mcg DFE), Vitamin B-12 (as Cyanocobalamin) (50 mcg), and 3 more. Notable high-dose ingredients include Thiamin at 4,167% DV, Riboflavin at 3,846% DV, Niacin at 313% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.
Is 21st Century B-50 Complex, Prolonged Release safe to take?
21st Century B-50 Complex, Prolonged Release, 60 Tablets has been analyzed for ingredient safety across all its components. Of 12 inactive ingredients, 7 are rated safe. 1 ingredient is flagged for review: Polyethylene Glycol. 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.
Is 21st Century a trustworthy supplement brand?
21st Century receives a brand trust score of 76/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1991 and headquartered in Tempe, Arizona, United States, the company offers 231 products in their lineup. They hold 2 verified certifications including Consumerlab, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: 21st Century has 4 historical regulatory incidents on record, which are factored into the trust score.
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