Sports Research NAC, N-Acetyl-Cysteine, 600 mg, 90 Veggie Capsules supplement bottle
Sports Research

NAC, N-Acetyl-Cysteine, 600 mg, 90 Veggie Capsules

What We Researched
1 active ingredient analyzed · 3 inactive ingredients decoded · 7 brand certifications checked · 4 retailers compared · Last updated: Mar 2026
100
Product Score Excellent
81
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
N-Acetyl-L-Cysteine (NAC) 600 mg
Bioavailability Excellent

Absorption Rating

  • N-Acetyl-L-Cysteine (NAC) Good
Other Ingredients Excellent

Fillers & Additives

  • Veggie Capsule (Hypromellose)
  • Rice Flour
  • Silicon Dioxide
Efficacy Excellent

Dosage Analysis

  • N-Acetyl-L-Cysteine (NAC) 600 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
N-Acetyl-L-Cysteine (NAC) 600 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Veggie Capsule (Hypromellose) Safe

It is used to encapsulate the supplement ingredients.

Rice Flour Safe

Natural bulking agent to fill capsule space. Hypoallergenic.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$23$22$21$20$19 Mar 12 $20.97$20.97
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
Sports Research

Founded 1980 · San Pedro, California, United States · 135 products · sportsresearch.com/

Certifications

7 certifications
Consumerlab Verified Source
Informed Sport Verified Source
Labdoor Verified
Non Gmo Project Verified Source
Nsf Certified For Sport Verified Source
Gluten Free Gfco Verified Source
Usda Organic Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
Coa Availability — Claimed

Violation History

4 incidents
Prop 65 Lead2024-11-15Source
Lawsuit False and misleading claims of "weight management" and "appetite suppression" on Garcinia Cambogia product.2024Source
Prop 65 Lead2021-10-25Source
Lawsuit False and misleading claims on the labeling of Premium MCT Oil and Turmeric Curcumin C3 Complex products.2020Source
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Frequently Asked Questions
Is Sports Research NAC, N-Acetyl-Cysteine a good supplement?

Sports Research NAC, N-Acetyl-Cysteine, 600 mg, 90 Veggie Capsules received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients with 90 servings per container. All 3 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Sports Research, holds a brand trust score of 81/100 with 7 verified certifications including Consumerlab, Informed Sport, Labdoor, Non Gmo Project.

What are the ingredients in Sports Research NAC, N-Acetyl-Cysteine?

Sports Research NAC, N-Acetyl-Cysteine contains 1 active ingredients: N-Acetyl-L-Cysteine (NAC) (600 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Sports Research NAC, N-Acetyl-Cysteine safe to take?

Sports Research NAC, N-Acetyl-Cysteine, 600 mg, 90 Veggie Capsules has been analyzed for ingredient safety across all its components. All 3 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 Sports Research a trustworthy supplement brand?

Sports Research receives a brand trust score of 81/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1980 and headquartered in San Pedro, California, United States, the company offers 135 products in their lineup. They hold 7 verified certifications including Consumerlab, Informed Sport, Labdoor, Non Gmo Project. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Sports Research has 4 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.