Full List of API Manufacturers in Japan (2025)

Leading API manufacturers in Japan include Shionogi Pharma, Koa Shoji Co., Ltd., Katsura Chemical, Kyowa Pharma Chemical, Astellas Pharma, Daito Pharmaceutical, API Co., Ltd., Sumitomo Chemical, Spera Nexus, and Kyowa Kirin.

Japan has a robust biotech and pharmaceutical sector with significant Active Pharmaceutical Ingredients (APIs) manufacturing capabilities. The range of products include generics, biological APIs, specialty APIs, and low molecular weight APIs.

The manufacturing facilities have advanced technologies, and the production is carried out under strict Good Manufacturing Practice (GMP) controls.

API Manufacturers in Japan

ACE JAPAN Co., Ltd.

Higashineko 5850-1 Oaza Higashine Yamagata Prefecture
Higashine, Yamagata Prefecture, Japan

Tel: 0237-43-6181
Fax: 0237-43-6183
https://www.acejp.jp

Active Pharma Co., Ltd.

Sumitomo Fudosan Chiyoda First Wing,
2-36-1, Kanda-Jimbocho, Chiyoda-ku,
Tokyo, 101-0051 Japan

Tel: 03-3514-6050
Fax: 03-3514-6059
E-mail: info@activepharma.co.jp
https://www.activepharma.co.jp/

Alps Pharmaceutical Ind. Co.,Ltd.

10-50 Furukawa-cho Mukai-machi
Nichome, Hida-shi

Phone: +81-577-73-2021
https://www.alps-pharm.co.jp

APELOA Japan

7F, 6-20-2, Shinbashi,
Minato-ku, Tokyo

Web: https://www.apeloa.com

API Co., Ltd.

Honjo Plant:
8-37 Honjo Nakanomachi, Gifu-shi, Gifu
500-8364 Japan

Tel: +81-58-268-6560
Fax: +81-58-268-6561
https://www.api3838.co.jp

ASAHI GELATINE INDUSTRIAL Co., Ltd.

Main Factory:
45 Fukui, Aboshi-ku, Himeji,
Hyogo, Japan 671-1225
Tel: (079)274-0111
Fax: (079)274-1735

Second Factory:
118 Shimoyobe, Yobe-ku, Himeji,
Hyogo, Japan 671-1261
Tel: (079)273-7751
Fax: (079)273-7752
https://www.asahi-gelatine.co.jp/

ASAHI GLASS Co. Ltd.

1-5-1, Marunouchi, Chiyoda-ku,
Tokyo 100-8405 Japan

Tel. +81-3-3218-5741
https://www.agc.com

Asahi Kasei Finechem Co., Ltd.

Head office:
Nakanoshima-Dai building, 3-3-23,
Nakanoshima, Kita-ku, Osaka 530-6130
Tel: +81-6-7636-3171
Fax: +81-6-7636-3172

Nobeoka Pharmaceuticals Plant:
6-2633-7, Asahi-machi, Nobeoka-shi,
Miyazaki 882-0847
Tel: +81-982-22-5722
Fax: +81-982-22-5890

Osaka Development & Production Center:
1-8-7 Fukumachi, Nishiyodogawa-ku,
Osaka 555-0034
Tel: +81-6-6472-3156
Fax: +81-6-6472-3704

Web: https://www.asahikasei-fc.jp

Astellas

Headquarters:
2-5-1, Nihonbashi-Honcho, Chuo-ku,
Tokyo 103-8411, Japan
Tel.: +81-3-3244-3000

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Toyama Technology Center:
2-178, Kojinmachi, Toyama-shi,
Toyama 930-0809, Japan

Takaoka Plant:
30, Toidesakaemachi, Takaoka-shi,
Toyama 939-1118, Japan

Web: https://www.astellas.com

Bachem Japan K.K.

Nihonbashi Life Science Building 7, 8F
1-9-10 Nihonbashi-Horidome cho, Chuo-ku
Tokyo 103-0012
Japan

Tel +81 3 6661 0774
https://www.bachem.com

Chemical Dojin Co., Ltd.

Tokyo Office:
1-9-22, Mukogaoka, Bunkyo-ku,
Tokyo, 113-0023, Japan

Kumamoto Office:
1-44-2, Ryutsu-Danchi, Minami-ku,
Kumamoto, 862-0967, Japan

Web: http://www.chemical-dojin.com

Chemicrea Inc.

VPO Higashinihonbashi, 9F
3-4-13 Higashinihonbashi Chuo-ku,
Tokyo 103-0004, Japan

Web: https://www.chemicrea.com

Chiyoda Corporation

Global HQ: Minatomirai Grand Central Tower:
4-6-2, Minatomirai, Nishi-ku,
Yokohama 220-8765, Japan

Koyasu Office & Research Park:
13, Moriya-cho 3-chome, Kanagawa-ku
Yokohama 221-0022, Japan

Web: https://www.chiyodacorp.com

Chugai Pharmaceutical Co.

1-1 Nihonbashi-Muromachi 2-chome,
Nihonbashi Mitsui Tower (Reception12F)
Chuo-ku, Tokyo

Telephone: 81-(0)3-3281-6611
https://www.chugai-pharm.co.jp

CMIC CMO CO

35, Hanakawa-kita 7-3,
Ishikari Hokkaido, 061-3217,
Japan

Shizuoka Plant:
1 Chome-588 Kanayaazuma, Shimada,
Shizuoka 428-0013, Japan

Web: https://en.cmicgroup.com