Frequently Asked Questions

NMN (Nicotinamide Mononucleotide) is a naturally occurring molecule and a direct precursor to NAD+, a coenzyme essential for cellular energy production, DNA repair, and healthy aging. By supplementing with NMN, you can support your body's declining NAD+ levels.

NMN boosts NAD+ levels while Resveratrol activates sirtuins — proteins that depend on NAD+ to regulate aging. Together, they create a synergistic effect: more fuel (NAD+) and activated machinery (sirtuins) working together.

Our Omega-3 DHA comes directly from algae — the original source. This means zero heavy metals, PCBs, or ocean pollutants. It's also completely vegan and environmentally sustainable.

Yes. Every batch is independently tested by accredited laboratories for purity, potency, and contaminants. We're happy to share certificates of analysis upon request.

Absolutely. NMN + Resveratrol and Omega-3 DHA complement each other well. NMN supports cellular energy and repair, while DHA supports brain and heart health. Many of our customers take both daily.

Standard shipping takes 3-5 business days within the US. Expedited shipping (1-2 business days) is available at checkout for an additional fee.

We currently ship to the US, UK, Canada, and the EU. International orders typically arrive within 7-14 business days. Customs duties may apply.

Standard shipping is free on orders over $75. For orders under $75, standard shipping is $5.99. Expedited shipping is $12.99 regardless of order value.

Select 'Subscribe & Save' on any product page to save 10% on every order. Your supplements will be delivered automatically every 30 days. You can pause, skip, or cancel anytime from your account.

Yes. There are no contracts or commitments. You can cancel your subscription at any time by contacting us at support@humannutrients.com. Your cancellation takes effect after your current billing cycle.

Yes. Contact us at support@humannutrients.com to adjust your delivery schedule. We offer 30, 60, and 90-day delivery intervals.

We offer a 30-day money-back guarantee. If you're not satisfied with your purchase, contact us within 30 days of delivery for a full refund. Products must be returned in their original packaging.

Email us at support@humannutrients.com with your order number and reason for return. We'll send you a prepaid return label and process your refund within 5-7 business days of receiving the product.