Zahler B-Complex Bioactive B-Complex Formula, 120 Time Release Tablets supplement bottle
Zahler

B-Complex Bioactive B-Complex Formula, 120 Time Release Tablets

What We Researched
10 active ingredients analyzed · 7 inactive ingredients decoded · 2 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
84
Product Score Good
70
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Riboflavin (as Riboflavin-5-Phosphate) 13 mg 1,000%
Niacin (as Inositol Hexanicotinate) 80 mg 500%
Vitamin B6 (as Pyridoxal-5-Phosphate) 17 mg 1,000
Folate (as L-5-Methyltetrahydrofolate Calcium) (120 mcg Folic Acid) 200 mcg DFE 50%
Vitamin B12 (as Methylcobalamin) 240 mcg 10,000%
Biotin 30 mcg 100%
Choline (as Choline Bitartrate) 110 mg 20%
Pantethine 50 mg *
Inositol (from Inositol Hexanicotinate) 22 mg *
Benfotiamine 12 mg *
Bioavailability Very Good

Absorption Rating

  • Riboflavin (as Riboflavin-5-Phosphate) Good
  • Niacin (as Inositol Hexanicotinate) Poor
  • Vitamin B6 (as Pyridoxal-5-Phosphate) Good
  • Folate (as L-5-Methyltetrahydrofolate Calcium) (120 mcg Folic Acid) Good
  • Vitamin B12 (as Methylcobalamin) Good
  • Biotin Good
  • Choline (as Choline Bitartrate) Poor
  • Pantethine Good
  • Inositol (from Inositol Hexanicotinate) Good
  • Benfotiamine Good
Other Ingredients Excellent

Fillers & Additives

  • Dicalcium Phosphate
  • Hydroxypropyl Methylcellulose
  • Microcrystalline Cellulose
  • Stearic Acid
  • Magnesium Stearate
  • Crospovidone
  • Silicon Dioxide
Efficacy Fair

Dosage Analysis

  • Riboflavin (as Riboflavin-5-Phosphate) 13 mg Effective
  • Niacin (as Inositol Hexanicotinate) 80 mg High
  • Vitamin B6 (as Pyridoxal-5-Phosphate) 17 mg Effective
  • Folate (as L-5-Methyltetrahydrofolate Calcium) (120 mcg Folic Acid) 200 mcg DFE Under-dosed
  • Vitamin B12 (as Methylcobalamin) 240 mcg Effective
  • Biotin 30 mcg Effective
  • Choline (as Choline Bitartrate) 110 mg Under-dosed
  • Pantethine 50 mg Under-dosed
  • Inositol (from Inositol Hexanicotinate) 22 mg Under-dosed
  • Benfotiamine 12 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Riboflavin (as Riboflavin-5-Phosphate) 13 mg 1,000%
Niacin (as Inositol Hexanicotinate) 80 mg 500%
Vitamin B6 (as Pyridoxal-5-Phosphate) 17 mg 1,000
Folate (as L-5-Methyltetrahydrofolate Calcium) (120 mcg Folic Acid) 200 mcg DFE 50%
Vitamin B12 (as Methylcobalamin) 240 mcg 10,000%
Biotin 30 mcg 100%
Choline (as Choline Bitartrate) 110 mg 20%
Pantethine 50 mg *
Inositol (from Inositol Hexanicotinate) 22 mg *
Benfotiamine 12 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Hydroxypropyl Methylcellulose Safe

It is used as a coating for tablets and capsules.

Microcrystalline Cellulose Safe

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

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Crospovidone Generally_safe

It is used as a binder to help tablets or capsules disintegrate.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$35$34$33$32$31 Mar 12 $33.09
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
Zahler

Founded 2005 · Brooklyn, NY, USA · 140 products · zahlers.com/

Certifications

2 certifications
Fda Gmp Inspections Verified Source
Kosher Certified Verified Source

Transparency

3 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source

Violation History

4 incidents
Prop 65 Lead2023-08-28Source
Lawsuit Trademark Infringement2022Source
Prop 65 Lead2021-12-09Source
Fda Warning A retailer was cited for making drug claims about a Zahler product.2017-04-17Source
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Frequently Asked Questions
Is Zahler B-Complex Bioactive B-Complex Formula, 120 Time Release Tablets a good supplement?

Zahler B-Complex Bioactive B-Complex Formula, 120 Time Release Tablets received a product quality score of 84/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 10 active ingredients with 120 servings per container. Of the 7 inactive ingredients, 6 are rated safe and 0 are flagged for review. The manufacturer, Zahler, holds a brand trust score of 70/100 with 2 verified certifications including Fda Gmp Inspections, Kosher Certified.

What are the ingredients in Zahler B-Complex Bioactive B-Complex Formula, 120 Time Release Tablets?

Zahler B-Complex Bioactive B-Complex Formula, 120 Time Release Tablets contains 10 active ingredients: Riboflavin (as Riboflavin-5-Phosphate) (13 mg), Niacin (as Inositol Hexanicotinate) (80 mg), Vitamin B6 (as Pyridoxal-5-Phosphate) (17 mg), Folate (as L-5-Methyltetrahydrofolate Calcium) (120 mcg Folic Acid) (200 mcg DFE), Vitamin B12 (as Methylcobalamin) (240 mcg), Biotin (30 mcg), and 4 more. Notable high-dose ingredients include Riboflavin at 1,000% DV, Niacin at 500% DV, Vitamin B12 at 10,000% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Zahler B-Complex Bioactive B-Complex Formula, 120 Time Release Tablets safe to take?

Zahler B-Complex Bioactive B-Complex Formula, 120 Time Release 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 Zahler a trustworthy supplement brand?

Zahler receives a brand trust score of 70/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2005 and headquartered in Brooklyn, NY, USA, the company offers 140 products in their lineup. They hold 2 verified certifications including Fda Gmp Inspections, Kosher Certified. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Zahler has 4 historical regulatory incidents on record, which are factored into the trust score.

How much vitamin d3 should i take daily?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

What does vitamin d do?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 250,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

How much vitamin d3 per day for a woman?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

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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.