About LEM
LEM is a cultured extract derived from the mycelium (roots) of medicinal mushrooms and is one of the most researched specialty immune supplements in the world. It is expected to support immune function and is backed by numerous studies. This product is highly recommended for those looking to maintain their health.
Stability Safty Trust
**About Health Food GMP**
Health Food GMP (Good Manufacturing Practice) is a standard for the manufacturing and development of safe and reliable supplements and health foods. This includes a process of auditing and certifying the factories of health food manufacturing companies based on the "Health Food GMP Guidelines" established by the Ministry of Health, Labor and Welfare.
Certified factories have been confirmed to implement proper manufacturing and quality control practices. Our factory has obtained certification for voluntary health food safety inspections and has received a GMP certificate of conformity from the Japan Health Food and Nutrition Food Association. We manufacture under strict controls, ensuring that seed bacteria are meticulously managed. Additionally, genetic testing confirms that there are no mutations at the DNA level, and we thoroughly check for contaminants at each step of the manufacturing process.
If you prioritize the safety and quality of health foods, we invite you to consider products from our GMP-certified factory.
Development
Product Line - up
OEM & raw material supply & joint development
Product name | Form | Ingredients | Minimun Order Quantity | Shelf life |
LEM bulk raw material | powder | LEM:100% | 1 kg | 1 year |
Product name | Form | Ingredients | Minimun Order Quantity | Shelf life |
MAK bulk raw material | powder | MAK:100% | 1 kg | 1 year |
Product name | Form | Ingredients | Minimun Order Quantity | Shelf life |
LEF bulk raw material | powder | LEF:100% | 1 kg | 1 year |
Private brand
Product Line - up / Products for export
Product name | Form | Net weght | Ingredients | Minimun Order Quantity | Shelf life |
C-Kin fine mix | powder | 3,000mg | LEM:24% Lactose:76% |
600 sachets | 3 year |
Product name | Form | Net weght | Ingredients | Minimun Order Quantity | Shelf life |
C-Kin bulk powder 1.5 | powder | 1,500mg | LEM:100% |
300 sachets | 3 year |
Development
OEM & raw material supply & joint development
Private brand
Product Line - up / Products for export

Product name | Form | Net weght | Ingredients | Minimun Order Quantity | Shelf life |
C-Kin fine mix | powder | 3,000mg | LEM:24% Lactose:76% |
600 sachets | 3 year |

Product name | Form | Net weght | Ingredients | Minimun Order Quantity | Shelf life |
C-Kin bulk powder 1.5 | powder | 1,500mg | LEM:100% |
300 sachets | 3 year |
Stability Safty Trust
From products to OEM and raw material supply.
Based on our philosophy of “Integrity and Trust,” we are committed to meeting “needs and trust” from the customer's perspective above all else. We aim to be the “Only One” needed by society, looking to tomorrow with flexible ideas.
55 years of trust and achievement with a motto of “Safety and Reliability.
Health Food GMP is a standard for manufacturing and developing supplements and health foods that maintain a certain level of quality and are safe and reliable. Based on the basic requirements of the Ministry of Health, Labor and Welfare's “Health Food GMP Guidelines,” we audit and certify the factories of health food manufacturing companies. A certified factory is recognized as having implemented proper manufacturing and quality control. Our factory is registered for certification of voluntary health food safety inspections and has obtained a GMP certificate of conformity from the Japan Health Food and Nutrition Food Association, and we manufacture under strict control. The seed bacteria are under strict control, and genetic testing confirms that there are no mutations at the DNA level. In the manufacturing stage, we also confirm at each step of the process that there are no contaminants.
We are also involved in OEM supply, raw material supply, and joint development using our long-established culture technology.
Translated with DeepL.com (free version)
〖GMP certified scope〗 dated 2018.07.05
Raw materials and products [Formulation process: granules, powder, liquid] [Packaging process: granules, powder, liquid].

〖GMP certified scope〗 dated 2018.07.05
Raw materials and products [Formulation process: granules, powder, liquid] [Packaging process: granules, powder, liquid].

MARKET
Potential of LEM in the US Market
The US market presents a significant opportunity for NSK's Terminalia mycelium cultivation extract (LEM).

MARKET
The US market presents a significant opportunity for NSK's Shiitake Mushroom Mycelia-growing Medium (LEM):

About NSK Co.,ltd.
All manufacturing functions, from long-term cultivation to finished products, are concentrated in our own factory. We are making the most of the advantages of our integrated system, striving for thorough quality control and improved cost performance, and manufacturing products in a wide variety of fields, from health foods to plant virus inhibitors and fertilizers for home and garden use.
Unique Proposal Capability Our goal is not to stop at a wide research and development network or mere manufacturing and sales, but to provide a backup system from product development support by our own laboratory staff, to various sales promotion support activities by our sales staff, to the pursuit of evidence through our network with medical institutions and public organizations.
About NSK Co.,ltd.
All manufacturing functions, from long-term cultivation to finished products, are concentrated in our own factory. We are making the most of the advantages of our integrated system, striving for thorough quality control and improved cost performance, and manufacturing products in a wide variety of fields, from health foods to plant virus inhibitors and fertilizers for home and garden use.
Unique Proposal Capability Our goal is not to stop at a wide research and development network or mere manufacturing and sales, but to provide a backup system from product development support by our own laboratory staff, to various sales promotion support activities by our sales staff, to the pursuit of evidence through our network with medical institutions and public organizations.
Agricultural Business
Research and Development
Our evaluations have been published in numerous academic conferences and papers.
Research and Development
Our evaluations have been published in numerous academic conferences and papers.
Pet Industry Business
Corporate Philosophy “Respect for Life” Praying to contribute to the health of humans and other animals and plants. Pets, such as dogs and cats, are also being affected by changes in their living environment, which are affecting their health and mental health. We support the mental care and social support of humans, as well as the health maintenance of animals.
Pet Industry Business
Corporate Philosophy “Respect for Life” Praying to contribute to the health of humans and other animals and plants. Pets, such as dogs and cats, are also being affected by changes in their living environment, which are affecting their health and mental health. We support the mental care and social support of humans, as well as the health maintenance of animals.
We can also provide you with samples of each raw material.
We can also provide you with samples of each raw material.