FAQ
Do you ship to my state? How long does shipping take?
Yes — we ship to all 50 US states. Timeline depends on which product type you're ordering:
- Digital protocol guides (Vault + $27 protocols): instant email delivery — no shipping.
- Sun Home saunas + cold plunges: 1-4 weeks by freight, coordinated by Sun Home.
- Levels + the Stelo Glucose Biosensor: 3-7 business days after signup.
- Amazon-sourced picks: 1-3 business days via Amazon Prime.
Full details on the shipping page.
Frequently Asked Questions
What makes Purelongevity different from other supplement brands?
Every product in our protocol is formulated at a dose that matches or exceeds the dose used in published human clinical trials. We do not use proprietary blends — all ingredient amounts are fully disclosed. Every batch is third-party tested by an ISO-accredited laboratory, and we publish the certificate of analysis inside every box. We manufacture exclusively in a GMP-certified, FDA-registered facility in the United States. We do not add fillers, artificial flow agents, or undisclosed excipients.
What is NMN and why is 500 mg the right dose?
Nicotinamide Mononucleotide (NMN) is a direct precursor to NAD+, a coenzyme that fuels over 500 enzymatic reactions and declines approximately 50% between age 40 and 60. Our 500 mg dose is derived from the Yoshino et al. (2021) trial published in Cell Metabolism, which demonstrated significant improvements in insulin sensitivity and skeletal muscle NAD+ levels at this dose in postmenopausal women. For NMN + Resveratrol, the resveratrol acts as a sirtuin activator that works synergistically with elevated NAD+ — a combination studied extensively by the Sinclair Lab at Harvard.
How should I use the Full-Body Red Light Therapy Panel?
For general photobiomodulation, we recommend 10–20 minutes per session at a distance of 6–12 inches from the panel, once daily. The 660 nm wavelength addresses surface tissue, collagen synthesis, and skin health. The 850 nm near-infrared wavelength penetrates deeper — 2–5 cm — to reach muscle, joint, and mitochondrial targets. Morning sessions are ideal, as red light exposure has been shown to support circadian rhythm calibration by influencing melanopsin receptors in the retina. Avoid staring directly at the panel. Consult your physician if you have photosensitive conditions or are taking photosensitizing medications.
Are your products safe to stack together?
Yes. Our products are designed to work synergistically. The Longevity Starter Stack (NMN + Marine Collagen) and Recovery Stack (Marine Collagen + Red Light) are curated combinations we use ourselves. There are no known adverse interactions between NMN, resveratrol, marine collagen, and photobiomodulation therapy. As with any supplement protocol, we recommend consulting your physician — particularly if you are on prescription medications or being treated for a chronic condition.
How long does it take to see results?
Results vary by individual baseline, consistency, and the specific compound. In clinical literature, NMN shows measurable changes in NAD+ levels within 2–4 weeks of daily use. Marine Collagen Peptides show measurable dermal density improvements at 8 weeks in RCT data. Red Light Therapy shows acute ATP and blood flow effects within a single session, with cumulative anti-inflammatory effects documented after 4–6 weeks of consistent use. We recommend a minimum 90-day commitment to any protocol for a meaningful personal data set.
Is The Family Longevity Stack appropriate for all ages?
The Family Longevity Stack is formulated for adults 18 and older. NMN and resveratrol have not been studied in clinical trials in children or adolescents, and we do not recommend them for anyone under 18. Marine Collagen and red light therapy have broader safety profiles, but all supplementation decisions for minors should be made in consultation with a pediatrician.
Where are your products manufactured?
All Purelongevity supplements are manufactured in the United States in an FDA-registered, GMP-certified (Current Good Manufacturing Practice) facility. Our red light therapy panels are assembled and quality-controlled under our direct specification by a CE and FCC-certified hardware partner. Every finished product lot is submitted to a third-party ISO-accredited laboratory before release. Certificates of analysis are available upon request and are included inside every product box.
What is your return and refund policy?
We offer a 30-day no-questions-asked return policy. If you are unsatisfied for any reason, email returns@purelongevity.com within 30 days of delivery with your order number. We will issue a prepaid return label and process your refund within 5 business days of receiving the returned item. Opened products are accepted. Please see our full Return Policy for complete details.
Do you recommend any equipment beyond supplements?
Yes — for hardware-tier longevity (cardiovascular conditioning + heat shock proteins), infrared sauna is the foundational equipment investment. Our 2026 recommendation is the Sun Home Equinox — the only consumer infrared sauna hitting the Patrick lab research threshold of 165°F (Fortune/Forbes/SI Best Infrared Sauna 2026). For cold plunge and other recovery equipment, see our recovery equipment guide. Affiliate disclosure: we earn a commission on equipment links at no additional cost to you.