NMN (Nicotinamide Mononucleotide) is a naturally occurring compound that serves as a precursor to NAD+ (nicotinamide adenine dinucleotide), a coenzyme found in every cell of your body. NAD+ plays a key role in cellular energy metabolism and various biological processes.

Research indicates that NAD+ levels naturally decline with age. Studies have shown that NAD+ levels can decrease by approximately 50% between ages 40 and 60.* NMN supplementation is intended to support the body's natural NAD+ production.

What this means: NMN supplements are designed to support healthy aging processes by providing the precursor your body uses to produce NAD+.*

NAD+ and NMN are different molecules with distinct properties:

NAD+ (when taken orally): Due to its larger molecular size and structure, NAD+ has limited bioavailability when consumed as an oral supplement. Research suggests it is poorly absorbed through the digestive system in its intact form.

NMN: As a smaller precursor molecule, NMN research suggests better absorption characteristics. Published studies indicate that orally administered NMN can be absorbed and utilized by cells to support NAD+ biosynthesis.

Scientific basis: Multiple peer-reviewed studies in both animal and human subjects have examined NMN absorption and metabolism pathways. While research is ongoing, current evidence suggests NMN may offer advantages as an oral supplement compared to NAD+ itself.

Important note: Individual results may vary. The supplement industry uses NMN based on emerging research, though long-term human studies are still limited.

Recommended Use:
Mix 250mg to 500mg of powder into water, juice, or your preferred beverage once daily. May be taken with or without food.

Common preferences:

• Morning consumption (to support daily energy patterns)
• Consistent timing each day for routine compliance

What users have reported:*
Individual experiences vary widely, but some users report:

• Within 1-2 weeks: Changes in perceived energy levels or mental clarity
• After 4-8 weeks: Observations related to physical recovery or general well-being

Important: Supplement effects are highly individual and influenced by many factors including diet, exercise, sleep, stress levels, and overall health status. Results are not guaranteed and vary significantly between individuals.

Best practice: Consistency is key with any supplement regimen. Effects, if experienced, typically require sustained use over several weeks.

*Based on customer testimonials and surveys. Individual results may vary.

We understand supplement skepticism—it's justified given the wide variance in product quality across the industry.

Eterna NMN Quality Standards:

✅ Third-party lab testing — Each batch is independently tested for purity and potency

✅ GMP-certified manufacturing — Produced in facilities that meet Good Manufacturing Practice standards

✅ Purity testing — Tested for heavy metals, microbes, and contaminants

✅ Certificate of Analysis available — Test results available upon request

✅ No proprietary blends — Clear labeling of actual NMN content

Industry context: Supplement purity can vary significantly between manufacturers. Independent testing has found variance in actual NMN content and purity levels in products sold through various channels. We commit to transparent testing and quality control.

However: Even high-quality supplements work differently for different people based on individual biochemistry, health status, and lifestyle factors. We cannot guarantee specific results for any individual.

NMN is generally well-tolerated in human clinical studies conducted to date. However, as with any supplement, individual responses may vary.

Current safety data:

• Human clinical trials have examined NMN at doses ranging from 250mg to 1,250mg daily
• Published studies report NMN as generally safe with no serious adverse events at recommended doses
• Most common experiences: minimal to no side effects

Reported mild effects (uncommon):

• Mild flushing or warmth (likely related to increased NAD+ activity)
• Temporary digestive adjustment
• These typically resolve within a few days if they occur

Manufacturing safety:

• Produced in FDA-registered, GMP-certified facilities
• Batch tested for contaminants, heavy metals, and microbial content

IMPORTANT WARNINGS:

Do NOT use if you are:

• Pregnant or nursing (insufficient safety data)
• Under 18 years of age
• Have been diagnosed with cancer or precancerous conditions (consult your oncologist)

Consult your healthcare provider BEFORE use if you:

• Take prescription medications
• Have any medical conditions
• Are scheduled for surgery
• Take blood thinners or diabetes medications

This product has not undergone the same rigorous testing as pharmaceutical drugs. Long-term safety data in humans is still limited.

Supplements generally considered compatible with NMN:

• Basic vitamins and minerals (Vitamin D, B-complex, Magnesium)
• Omega-3 fatty acids
• Probiotics
• Antioxidants (Resveratrol, Quercetin, CoQ10)

IMPORTANT: We cannot provide medical advice about drug interactions or contraindications.

You MUST consult your healthcare provider before combining NMN with:

• Any prescription medications
• Blood thinners (Warfarin, Apixaban, etc.)
• Diabetes medications (Metformin, Insulin, etc.)
• Immunosuppressants
• Chemotherapy or cancer treatments
• Any medications metabolized by the liver

Why this matters: NAD+ plays roles in numerous metabolic pathways. While specific drug interactions have not been extensively documented, theoretical interactions are possible, particularly with medications affecting:

• Blood sugar regulation
• Blood clotting
• Immune function

When in doubt, ask your doctor. They have access to your complete medical history and can provide personalized guidance.

Eterna NMN is offered as a powder for several practical reasons:

Advantages of powder format:

• Flexible dosing: Easily adjust serving size (250mg-500mg) based on individual needs
• No added ingredients: Capsules require binders, fillers, and coating agents
• Cost efficiency: More servings per dollar compared to encapsulated products
• Faster mixing: Dissolves directly in beverages without capsule breakdown time

Considerations:

• Requires measuring (included scoop provided)
• Must be mixed into liquid
• Some users prefer convenience of pre-measured capsules

Note on bioavailability: Both powder and capsules, when containing pure NMN, should provide similar absorption once dissolved or released in the digestive system. The powder format eliminates the capsule breakdown step, though this difference is likely minimal for practical purposes.

We offer a 30-Day Money-Back Guarantee on unopened products purchased directly from our website.

Here's how it works:

• Try Eterna NMN for up to 60 days from your purchase date
• If you're not satisfied, contact our customer service team
• Return any unopened bags within 60 days for a refund of your purchase price
• Shipping costs are non-refundable
• One opened bag per customer may be eligible for refund at our discretion (to allow adequate trial period)

Why 30 days? Research and user reports suggest that consistent use over 4-8 weeks provides a meaningful trial period, as the effects of NAD+ support are cumulative rather than immediate.

Important limitations:

• Guarantee applies to first-time customers only
• Products must be purchased directly from EternaNMN.com
• Cannot be combined with other offers
• We reserve the right to refuse returns from customers with patterns of excessive returns

Reasonable expectations: While many customers report positive experiences, supplements affect everyone differently. We cannot and do not guarantee specific health outcomes or results.