DHC
Quality Assurance

DHC creates products with an emphasis on safety. The core goal of DHC’s research and development is to bring
happiness to as many people as possible.

TOPIC O1

Commitment to quality and responsible production

TOPIC O2

Focal points in cosmetics production

TOPIC 03

Focal points in supplement production

TOPIC O4

The secrets of
DHC Olive Virgin Oil

Commitment to quality and
responsible production

Consumers rely on our supplements every day.
That’s why DHC emphasizes quality control as a key responsibility of a manufacturer.
Our Quality Management Office is the heart and soul of DHC product safety, working daily to deliver reliable supplements to our customers.

Safety
initiatives

DHC conducts testing on raw materials before they are delivered to the plant and on finished products before they are shipped out.

We ensure safety through checks conducted by the Quality Management Office and inside product plants at three stages: raw materials, products before packaging in pouches or containers, and final products.
Only products that have fully passed all tests are brought to market.

Checking raw materials before production

Raw materials inspection

DHC’s Quality Management Office rigorously tests fragrance, color, and other properties of raw materials before they are delivered to the plant.
We also conduct microbial testing for general bacteria, colon bacilli, mold, and yeast, along with analysis and testing of key ingredients to make sure products contain their full complement of beneficial ingredients.

Checking products after production

Pre-packaging checks

We check the appearances, hardness, water content, and other properties of capsules and tablets and verify their solubility within specified timeframes. We also repeat the microbial testing and ingredient analysis conducted before production.

Checking final products

Checks on final products

We check final products for several key factors: Are the best-by dates printed correctly? Do they conform to the specified weights and quantities? Are they packaged with the appropriate desiccants?

Our vision for quality

Safety is fundamental to manufacturing.
Thorough quality control delivers peace of mind.

DHC is committed to manufacturing premised on safety. Our raw materials selection process is especially rigorous. We use only raw materials that have passed inspections both by the suppliers and the DHC Quality Management Office, following guidelines that meet both national standards and our own even stricter checking procedures. Our products are produced only in plants that have earned Good Manufacturing Practices (GMP) certification for health foods and health supplements. Quality Control personnel also visit production lines to check control systems on site.

DHC Supplement Development / Quality ManagemetHideaki Iwasaki

The Quality Management Office performs thorough testing as its final checkpoint for quality.

The crucial function of the Quality Management Office is to ensure product safety and that our standards are met for sale of products to consumers. These responsibilities are first and foremost in our minds, always. After all, this office is the last line of defense for quality. All testing is scrupulous and conducted with meticulous precision to assure consumers the peace of mind they expect from DHC products.

DHC Quality Management / Quality Assurance and ManagementNobuaki Yamaura

My motivation to deliver safe products is foremost

We work daily to prevent and reject substandard products, which must never reach the market. My goal is to manage safety while also honing my skills.

DHC Quality Management / Microbial TestingKanako Sasaki

Keeping raw materials safe through precise analysis

The quality of raw materials is essential to creating quality products. In my work, I strive to ensure that raw materials satisfy all safety standards, always remaining aware of the importance of precision testing.

DHC Quality Management / Ingredients AnalysisShinro Ito

After-sales service is another important aspect of quality.

The Health Foods Hotline responds to consumer questions and concerns.

Our responsibilities do not end when a product is sold.
After-sales service is an important component of DHC’s vision of quality.
Through our Health Foods Hotline, qualified professionals, including doctors, pharmacists, and senior nutritionists, answer consumer questions directly.
Feel free to contact us with questions about the effects of various supplements and how to take them, as well as their safety.