What is supplement substantiation?

Substantiation is the process of gathering and documenting scientific evidence that supports the health claims you make on your supplement labels and marketing materials. The FDA requires that all structure–function claims be truthful, non-misleading, and substantiated by competent and reliable scientific evidence — typically clinical trials on healthy human subjects.

How does Nutra Comp's AI analysis work?

Nutra Comp searches PubMed for clinical trials relevant to your ingredient, filters for studies on healthy human subjects with oral administration, and uses AI to extract key data: p-values, effect sizes, study design, population details, and conclusions. It distinguishes between across-group and within-group significance and ranks evidence strength with a confidence scoring system.

What data sources does Nutra Comp use?

Nutra Comp primarily searches PubMed/MEDLINE, the world's largest biomedical literature database maintained by the U.S. National Library of Medicine. We focus on peer-reviewed clinical trials, randomised controlled trials (RCTs), meta-analyses, and systematic reviews.

Are the generated claims FDA-compliant?

Yes. Nutra Comp generates structure–function claims in strict accordance with the FDA Small Entity Compliance Guide. All claims avoid explicit and implicit disease references. However, we recommend having your legal/regulatory team review the final output before use, as Nutra Comp is a tool to assist — not replace — professional compliance review.

How long does a typical ingredient search take?

Most ingredient searches complete within 5–15 minutes, depending on the volume of clinical literature available. Compare this to the typical manual process which can take 40–100+ hours per ingredient when done by a human compliance expert.

Can I export my reports?

Absolutely. All clinical evidence reports, structure–function claims, and substantiation memos can be exported as professional PDF documents. These are formatted for easy sharing with your legal team, regulatory reviewers, or business partners.

What does 'ingredient searches per month' mean?

Each search is one ingredient analysis — for example, searching 'Ashwagandha' or 'Vitamin D3'. The search generates a complete evidence report, claims, and substantiation memo for that ingredient. Your monthly allowance resets on your billing date.

When will Nutra Comp be available?

We're currently in private beta. Join the waitlist to get early access and be notified when we launch. Early waitlist members will receive priority access and special launch pricing.

N-Acetyl Cysteine (NAC): Clinical Evidence & Substantiation Summary

Clinical Trials

Strongest Evidence

Antioxidant & Respiratory

Typical Dosage

600–1,800 mg/day

Common Forms

NAC capsules (600 mg)

What Is N-Acetyl Cysteine (NAC)?

NAC is a precursor to glutathione, the body's master antioxidant. It has broad clinical applications including respiratory health, liver protection, mental health, and immune function. Its use in supplement form was briefly challenged by FDA in 2020 but has since been resolved.

Mechanism of action: NAC donates a cysteine molecule for glutathione synthesis, the body's primary endogenous antioxidant. It breaks disulfide bonds in mucus (mucolytic effect), chelates heavy metals, modulates glutamate signalling via the cystine-glutamate antiporter, and inhibits NF-κB activation.

Clinical Evidence Summary

Below are 3 key clinical studies on N-Acetyl Cysteine (NAC). Nutra Comp analyses 72+ studies in its full clinical evidence report.

Meta-analysis2016PMID: 26515950

NAC for prevention of COPD exacerbations: a meta-analysis

Population: 13 RCTs, 4,155 patients

Key finding: NAC (≥1,200 mg/day) significantly reduced COPD exacerbation frequency by 25% (RR 0.75, 95% CI 0.62–0.92).

Systematic review2019PMID: 30193758

NAC and mental health: a systematic review

Population: 16 RCTs

Key finding: NAC showed significant benefits as adjunctive treatment for depression (SMD: -0.37, p=0.001), OCD, and addiction disorders.

Meta-analysis2019PMID: 31364729

NAC supplementation and oxidative stress markers

Population: 9 RCTs

Key finding: NAC significantly increased total antioxidant capacity (p=0.002) and glutathione levels (p<0.001) while reducing MDA (a lipid peroxidation marker).

Evidence-Based Structure–Function Claims

Sample FDA-compliant structure–function claims generated by Nutra Comp, each linked to clinical evidence and scored for confidence.

“Supports healthy glutathione levels for antioxidant defence”

Category: Antioxidant · Confidence: 9/10

“Supports respiratory health and normal mucus production”

Category: Respiratory · Confidence: 8/10

“Supports liver health and detoxification processes”

Category: Liver Health · Confidence: 7/10

Get the full substantiation report for N-Acetyl Cysteine (NAC)

Includes all 72+ clinical studies analysed, complete claims library, and a ready-to-file substantiation memo.

Join Waitlist for Full Access

Related Ingredients

Vitamin C

168 studies · Immune Function

Selenium

64 studies · Thyroid Function

Key Terms

Randomised Controlled Trial (RCT)Meta-Analysis Adverse Event Reporting

Frequently Asked Questions

Is NAC FDA approved?

NAC is approved as an OTC drug (Mucomyst) and was briefly challenged as a supplement. FDA issued enforcement discretion guidance in 2022, allowing continued sale as a dietary supplement.

What are the most studied benefits?

The strongest evidence supports NAC for glutathione support, respiratory health (reducing COPD exacerbations), and as adjunctive support in mental health conditions.

What dosage is used in clinical studies?

Most studies use 600–1,800 mg/day, divided into 2–3 doses. The respiratory meta-analysis found 1,200 mg/day as the minimum effective dose.

Stop Spending Weeks on Substantiation

Nutra Comp generates full clinical evidence reports, FDA-compliant structure–function claims, and substantiation memos in minutes — not months.

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