Seeking Health NAC, 500 mg, 90 Capsules supplement bottle
Seeking Health

NAC, 500 mg, 90 Capsules

What We Researched
1 active ingredient analyzed · 5 inactive ingredients decoded · 2 brand certifications checked · 4 retailers compared · Last updated: Mar 2026
75
Product Score Fair
75
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
N-Acetyl-L-Cysteine 500 mg *
Bioavailability Excellent

Absorption Rating

  • N-Acetyl-L-Cysteine Good
Other Ingredients Excellent

Fillers & Additives

  • Vegetarian Capsule (Hypromellose and Water)
  • Microcrystalline Cellulose
  • Ascorbyl Palmitate
  • L-Leucine
  • Silica
Efficacy Very Poor

Dosage Analysis

  • N-Acetyl-L-Cysteine 500 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
N-Acetyl-L-Cysteine 500 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Vegetarian Capsule (Hypromellose and Water) Safe

It provides a vegetarian encapsulation option.

Microcrystalline Cellulose Safe

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

Ascorbyl Palmitate Safe

Prevents oxidation and extends shelf life of oil-based supplements.

L-Leucine Safe

It is included for its potential muscle-building and recovery benefits.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Price Comparison

iHerb $24.00 $0.27 / serving
Best Price
Vitacost $24.00 $0.27 / serving
Target $24.00 $0.27 / serving

Price History

Tracked across major retailers. Updated periodically.

$26$25$24$23$22 Mar 12 $24.00$24.00
iHerb
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
Seeking Health

Founded 2011 · Bellingham, Washington, USA · 88 products · seekinghealth.com

Certifications

2 certifications
Fda Gmp Inspections Verified Source
Nsf Gmp Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Claimed Source

Violation History

2 incidents
Prop 65 Lead2025-07-11Source
Recall Optimal Multivitamin Chewable Dietary Supplements2022-09-16Source
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Frequently Asked Questions
Is Seeking Health NAC, 500 mg a good supplement?

Seeking Health NAC, 500 mg, 90 Capsules received a product quality score of 75/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 1 active ingredients with 90 servings per container. All 5 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Seeking Health, holds a brand trust score of 75/100 with 2 verified certifications including Fda Gmp Inspections, Nsf Gmp.

What are the ingredients in Seeking Health NAC, 500 mg?

Seeking Health NAC, 500 mg contains 1 active ingredients: N-Acetyl-L-Cysteine (500 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Seeking Health NAC, 500 mg safe to take?

Seeking Health NAC, 500 mg, 90 Capsules has been analyzed for ingredient safety across all its components. All 5 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.

Is Seeking Health a trustworthy supplement brand?

Seeking Health receives a brand trust score of 75/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2011 and headquartered in Bellingham, Washington, USA, the company offers 88 products in their lineup. They hold 2 verified certifications including Fda Gmp Inspections, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Seeking Health has 2 historical regulatory incidents on record, which are factored into the trust score.

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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.