日本理化学薬品 List of Products and Services

We would like to introduce the essential amino acid 'L-Leucine' handled by Nippon Rika Kagaku Yakin Co., Ltd. It is a type of branched-chain amino acid (BCAA) like L-Valine and L-Isoleucine, widely found in foods, and is typically not deficient in a normal diet. 【Functions】 - Protein synthesis - Improved liver function - Muscle strengthening *For more details, please refer to the PDF document or feel free to contact us.

• Other food and beverage ingredients
• Pharmaceutical Intermediates
• Research Antibodies

We would like to introduce "L-Lysine Hydrochloride," an essential amino acid handled by Nippon Rika Kagaku Yakin Co., Ltd. Lysine is abundant in animal proteins but is not found in much quantity in plant proteins such as grains. It is a nutrient that is easily deficient in a carbohydrate-centered diet. 【Functions】 - Strengthening liver function - Enhancing immune power - Promoting calcium absorption - Suppressing the onset of strokes - Producing hormones and enzymes *For more details, please refer to the PDF document or feel free to contact us.

• Other food and beverage ingredients
• Pharmaceutical Intermediates
• Research Antibodies

We would like to introduce "L-Methionine," an essential amino acid handled by Nippon Rika Kagaku Yakuin Co., Ltd. It has the effect of lowering the blood concentration of histamine, which causes allergy symptoms such as itching. A deficiency of methionine can lead to decreased diuretic function, causing swelling, and can be a cause of arteriosclerosis and hair loss. 【Functions】 - Relief of itching due to allergies - Support for liver function - Antidepressant effects *For more details, please refer to the PDF document or feel free to contact us.

• Other food and beverage ingredients
• Pharmaceutical Intermediates
• Research Antibodies

We would like to introduce the essential amino acid "L-Phenylalanine" handled by Nippon Rika Kagaku Yakin Co., Ltd. It acts as a neurotransmitter that transmits signals in the brain and nerves. It is also a raw material for the sweetener aspartame. Excessive intake may lead to an increase in blood pressure. 【Functions】 - Mental stability - Appetite suppression - Analgesic effect *For more details, please refer to the PDF document or feel free to contact us.

• Other food and beverage ingredients
• Pharmaceutical Intermediates
• Research Antibodies

We would like to introduce the essential amino acid 'L-Histidine' handled by Nippon Rika Kagaku Yakuhin Co., Ltd. While adults can synthesize it in their bodies, children cannot, so it is classified as an essential amino acid. 【Functions】 - Support for nerve function - Promotion of growth - Relief of chronic arthritis - Reduction of stress *For more details, please refer to the PDF document or feel free to contact us.

• Other food and beverage ingredients
• Pharmaceutical Intermediates
• Research Antibodies

We would like to introduce "L-Valine," an essential amino acid handled by Nippon Rika Kagaku Yakuhin Co., Ltd. It is a type of branched-chain amino acid (BCAA), like leucine and isoleucine, and is metabolized in muscle tissue. It is generally not deficient in a normal diet, but its function may weaken if other branched-chain amino acids are lacking. 【Functions】 - Protein synthesis - Improvement of liver function - Regulation of nitrogen balance in the blood *For more details, please refer to the PDF document or feel free to contact us.

• Other food and beverage ingredients
• Pharmaceutical Intermediates
• Research Antibodies

We would like to introduce the essential amino acid "L-Tryptophan" handled by Nippon Rika Kagaku Yakuhin Co., Ltd. It serves as a raw material for "niacin," which is a type of energy and vitamin, and produces serotonin along with vitamin B6, niacin, and magnesium. 【Functions】 - Supports serotonin production - Promotes restful sleep - Stabilizes mood *For more details, please refer to the PDF document or feel free to contact us.

• Other food and beverage ingredients
• Pharmaceutical Intermediates
• Research Antibodies

We would like to introduce the essential amino acid 'L-Threonine' handled by Nippon Rika Kagaku Yakin Co., Ltd. It is the last amino acid discovered among essential amino acids and is abundant in animal proteins. It helps prevent the accumulation of fat in the liver and prevents fatty liver. 【Functions】 - Promotes growth - Enhances metabolism - Supports liver function *For more details, please refer to the PDF document or feel free to contact us.

• Other food and beverage ingredients
• Pharmaceutical Intermediates
• Research Antibodies

We would like to introduce the essential amino acid 'L-Isoleucine' handled by Nippon Rika Kagaku Yakin Co., Ltd. Due to its structure, it has a branched chain and is referred to as a branched-chain amino acid (BCAA) along with leucine and valine. If any one of the three is in excess, it can cause adverse effects such as weight loss. 【Functions】 - Promotes growth - Vasodilation - Enhances liver function - Strengthens muscles - Supports nerve function - Aids in recovery from fatigue *For more details, please refer to the PDF document or feel free to contact us.

• Other food and beverage ingredients
• Pharmaceutical Intermediates
• Research Antibodies

Amino acids are the smallest components that form proteins. Amino acids constitute all tissues in the body, including blood, organs, and muscles. Here, we will introduce examples of the use of amino acids in medical settings. 【Effects on Spots, Freckles, and Skin Whitening】 L-Cysteine, along with vitamin C, suppresses the production of melanin pigment and has the ability to reduce the produced melanin pigment from black to colorless. Additionally, L-Cysteine promotes skin metabolism, which can help eliminate existing melanin pigment. These three functions contribute to its effects on spots, freckles, and skin whitening. L-Cysteine can be synthesized in the body, but it is said that its amount decreases with age. Therefore, expectations for supplements may be increasing.

• Cosmetic materials and raw materials
• Pharmaceutical materials and carriers
• Other contract manufacturing

Amino acids are the smallest components that form proteins. They make up all the tissues in the body, including blood, organs, and muscles. Here, we will introduce examples of how these amino acids are utilized in the medical field. 【Detoxification in the Liver】 L-cysteine has detoxification effects on harmful substances in the liver. In particular, it reacts directly with acetaldehyde, a byproduct of alcohol metabolism, to facilitate detoxification, and it also helps the enzymes that break down alcohol in the liver. These properties are utilized in pharmaceuticals that claim to alleviate hangover symptoms. Additionally, because it promotes metabolism, it is expected to help alleviate the fatigue caused by hangovers.

• Cosmetic materials and raw materials
• Pharmaceutical materials and carriers
• Other contract manufacturing

Our company primarily manufactures and sells amino acids, including pharmaceutical raw materials, food additives, cosmetic ingredients, and industrial products. We have a GMP-compliant and ISO 14001 certified factory located in an area suitable for production and distribution, where we produce L-Tyrosine for intravenous use, boasting one of the largest production volumes in the world. Furthermore, by thoroughly implementing quality control measures such as GMP compliance and Drug Master File (DMF) registration, we have earned high trust from our customers. 【Features】 ■ Specializing in cysteine, tyrosine, and their derivatives ■ Manufacturing process management and quality control in accordance with GMP ■ Stable supply as chemical products, cosmetic ingredients, and food ingredients *For more details, please download the PDF or feel free to contact us.

• Other contract manufacturing
• Cosmetic materials and raw materials
• Pharmaceutical materials and carriers