The most rigorous human clinical trial (Nutrients, 2017) used 500mg of oral NAD+ and found a 90% increase in whole-blood NAD+ within 60 days. Brands using 50–150mg aren't meeting the threshold the science identifies as meaningful. They're optimizing for margin, not outcomes.

NAD+ is the active coenzyme — the molecule your cells actually use. NMN is a precursor: your body converts it to NAD+ through multiple enzymatic steps. That conversion efficiency declines with age — making direct NAD+ more reliable for adults 45+, while NMN is favoured by adults 30–45 and biohackers. Many customers stack both.

Quercetin is a potent antioxidant that reduces oxidative stress — creating the cellular environment where NAD+ can drive effective DNA repair. Think of NAD+ as the fuel and Quercetin as the clean engine. At 250mg from Sophora japonica, this is the clinically studied form and source.

Over 70% of Americans are Vitamin D3 deficient — and that deficiency directly impairs mitochondrial function and cellular repair. If NMN is raising your NAD+ but your D3 is depleted, you're working against a real bottleneck. We include 1,000 IU because it removes that bottleneck, not to pad an ingredient list.

Yes — and we can prove it. Most Resveratrol on the market is 5–10% purity from standardized extracts. Ours is 98% trans-resveratrol, the bioavailable isomer. Every batch is HPLC tested by a third-party lab. Email hello@veyahaus.com and we'll send the COA for your batch.

No. The capsule is HPMC (100% plant-based). Non-active ingredients are microcrystalline cellulose and brown rice flour — both clean and inert. No artificial colors, flavors, or preservatives. No magnesium stearate. Gluten-free, lactose-free, corn-free, Non-GMO, allergen-free.

Morning is optimal for both NAD+ and NMN. Both compounds interact with circadian rhythm regulation and support daytime energy. Taking them late in the day can interfere with sleep for some people. With food or without — both are well-supported. Consistency matters more than timing.

Yes — and many customers do. NMN in the morning (biosynthesis pathway) and NAD+ in the afternoon (direct uptake) is a popular dual-pathway protocol. They work through complementary mechanisms with no known interactions. Email us and we'll build you a specific protocol based on your age and goals.

Most customers notice improved morning energy and sleep quality within 7–14 days. Mental clarity sharpens around week 3–4. The deeper cumulative benefits — recovery, metabolic health, sustained cognitive function — build over 60+ days of consistent use. This is why our guarantee covers the full 60 days.

500mg aligns with most clinical studies and is right for adults 30–55 starting NMN. 1,000mg matches Dr. David Sinclair's personal protocol and is preferred for adults 55+, those with significant energy decline, or those who've used NMN before without the results they wanted. Start at 500mg, step up after 30 days if needed.

Orders placed before 3pm EST ship the same day, Monday through Friday. Orders after 3pm EST or on weekends ship the next business day. You'll receive a tracking number the moment your order leaves our facility. We currently ship within the US only.

Free shipping on all US orders $79 or more. All active subscription orders ship free regardless of order value. Expedited options available at checkout.

Subscribe and receive 22–25% off every order plus free shipping on every delivery. Choose your frequency: every 30, 45, or 60 days. Skip a delivery, change frequency, pause, or cancel anytime through your account — no fees, no minimum commitment, no notice required.

Everything. If within 60 days you don't notice a meaningful improvement — in energy, clarity, sleep, or recovery — email hello@veyahaus.com with your order number. Full refund. No return shipping. Even empty bottles. No questions asked.

The guarantee still applies. We want you to take the product consistently for the full 60 days before deciding — that's the whole point of the 60-day window. Contacting us on day 59 with empty bottles is exactly what the guarantee is designed for.

Email hello@veyahaus.com with your order number and a brief note about your experience. We respond within 2 business hours. If you're within 60 days, we process your refund immediately. No forms, no phone calls, no friction.