Major Niacin 500 mg supplement bottle
Major

Niacin 500 mg

What We Researched
1 active ingredient analyzed · 6 inactive ingredients decoded · 2 retailers compared · Last updated: Mar 2026
93
Product Score Excellent

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Niacin (as Nicotinic Acid) 500 mg 2500%
Bioavailability Excellent

Absorption Rating

  • Niacin (as Nicotinic Acid) Good
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Dicalcium Phosphate
  • Stearic Acid
  • Magnesium Stearate
  • Croscarmellose Sodium
  • Silica
Efficacy Very Good

Dosage Analysis

  • Niacin (as Nicotinic Acid) 500 mg High

Supplement Facts

Ingredient Amount % Daily Value
Niacin (as Nicotinic Acid) 500 mg 2500%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

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

Dicalcium Phosphate Safe

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

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$12$11$10$9$8 $10.13
Target

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Major

· 135 products

Transparency

1 claim
Related Supplements
Frequently Asked Questions
Is Major Niacin 500 mg a good supplement?

Major Niacin 500 mg received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients All 6 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives.

What are the ingredients in Major Niacin 500 mg?

Major Niacin 500 mg contains 1 active ingredients: Niacin (as Nicotinic Acid) (500 mg). Notable high-dose ingredients include Niacin at 2500% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Major Niacin 500 mg safe to take?

Major Niacin 500 mg has been analyzed for ingredient safety across all its components. All 6 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

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.