d’fine® is a supplement series from Japan offering quality-controlled supplements manufactured under strict standards and independently tested for purity and consistency.

The d’fine supplement line focuses on ingredient integrity, manufacturing transparency, and responsible quality assurance – without claiming formulation ownership or medical endorsement.

1) Commitment to health:

Supporting a healthy daily lifestyle through responsible supplementation.

2) Commitment to ingredient:

Using carefully selected, high-quality ingredients in clearly defined amounts.

3) Commitment to quality:

Manufactured in GMP-certified facilities with independent third-party testing.

Not All NMN Supplements Are the Same

Not all NMN (Nicotinamide Mononucleotide) supplements sold in the market meet the same quality, purity, or manufacturing standards. Factors such as raw material sourcing, production controls, and independent testing can significantly affect product consistency and safety.

A recent study in Singapore highlighted concerns around NMN product quality and purity available in the market.

Avoid imitations. Choose NMN supplements that are independently tested and manufactured under GMP-certified standards.

D'fine nmn supplements providing assured Quality & Safety of NMN Supplements

GMP Certified Manufacturing Standards

This NMN supplement is manufactured at GMP-certified facilities that follow strict production and quality control processes.

GMP certification helps ensure:

  • Consistent product quality and batch reliability
  • Defined manufacturing and hygiene standards
  • Compliance with highly regulated supplement production practices

Commitment to Quality


Our NMN delivers 6,150mg per bottle – 23% more than our labeled 5,000mg. Each capsule contains 205mg of pure NMN (verified by independent testing).


Why the difference?
We formulate conservatively to ensure you always get what you pay for, even accounting for natural variation.

  • 23% MORE NMN than labeled – 6,150mg per bottle
  • 99%+ NMN Purity verified
  • Zero Heavy Metals detected
  • Microbiologically safe

Every batch is tested by Société Générale de Surveillance in Singapore

Société Générale de Surveillance is the world’s leading testing, inspection, and certification company.

They are recognized as the global benchmark for sustainability, quality, and integrity. Their 99,600 employees operate a network of 2,600 offices and laboratories around the world.


FAQs – NMN Quality & Safety

High-quality NMN is typically manufactured under GMP-certified conditions and independently tested to verify purity and consistency. Manufacturing origin and third-party testing are key indicators of quality

Purity can be verified through independent third-party testing and certificates of analysis that confirm ingredient composition and contaminant screening.

NMN is widely studied as part of NAD⁺ research. When choosing NMN supplements, manufacturing standards and independent testing are important considerations. Individuals with medical conditions should consult a healthcare professional.

NMN continues to be studied for its role in NAD⁺ metabolism and cellular health. Ongoing research helps clarify appropriate usage, safety considerations, and regulatory perspectives.

GMP certification indicates that supplements are manufactured under defined quality control systems that help ensure consistency, hygiene, and production reliability.

This NMN supplement is manufactured in Japan at GMP-certified facilities and independently tested in Singapore for quality verification.