NMN vs NAD+: Precursor or the Real Thing?
NMN vs NAD+ explained: precursor supplement or the coenzyme itself, how each is sold in the US, regulatory status and why neither is better proven.
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NAD Nasal Spray Blog
Buying guides and comparisons from NAD Nasal Spray, reviewed by our medical panel.
📝 Latest articles
Buying guides and side-by-side comparisons, medically reviewed.
NAD Spray Benefits: What Is Actually Known
NAD spray benefits checked against the evidence: what cell and animal research shows, what lacks human trials, and why nasal delivery data are limited.
Read articleNAD Spray vs Injection: Format, Price and Evidence
NAD spray vs injection compared on price, access, evidence and regulatory exposure: Arc-1 spray $149.99, injections $299.99, plus research options.
Read articleNAD Nasal Spray Side Effects: What Users Report
NAD nasal spray side effects: what is documented, what clinics report with IV NAD+, and product quality issues like leaks that can look like reactions.
Read articleDo You Need a Prescription for NAD Nasal Spray?
Do you need an NAD nasal spray prescription? Arc-1's compounded spray needs one via telehealth; research sprays need none but are not for human use.
Read articleHow NAD Nasal Spray Is Supposed to Work
How does NAD nasal spray work? The theory behind nasal delivery, why NAD+ is hard to deliver, and what controlled human trials have not yet shown.
Read articleNAD Nasal Spray Dosage: Why Your Prescriber Sets It
NAD nasal spray dosage explained: no approved human dose exists, animal data cannot set one, forum protocols are anecdotes, and prescribers set Rx amounts.
Read article👩⚕️ Who reviews our articles
Every article is checked by at least one member of this panel before publication.
SM
Content Editor & Fact-Checker
Science journalist who fact-checks every claim against primary literature and ensures our guides stay accurate after each update.
JL
Supply Chain & Vendor Auditor
Tracks peptide vendor sourcing, cold-chain logistics and batch-matching practices to verify supply-chain integrity.
RT
Biomedical Science Reviewer
PhD in molecular pharmacology. Evaluates the published animal and clinical data behind every peptide we cover.
EK
Lab Data & COA Reviewer
Analytical chemist who audits third-party certificates of analysis for potency, residual solvents and heavy-metal contamination.