CONTACT US
Have questions? We’re here to help
We’re eager to hear from you. After all, listening is an incredibly important part of our human health care mission. Here are several ways to get in touch:
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CLINICAL TRIALSLearn more about Eisai clinical trials to evaluate potential new therapies for neurological disorders and for various types of cancer.
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EISAI USA FOUNDATION
To submit an official request or if you have any further questions regarding the submissions process, please email EisaiUSAFoundation@eisai.com
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Neurology
For Neurology information or to report an adverse event, please:
Call: 888-274-2378888-274-2378 (8:30 a.m. - 5:00 p.m. Eastern Time, Monday – Friday)
Email: esi_medinfo@eisai.com
Or write to: Medical Information, Eisai Inc., 200 Metro Blvd., Nutley, NJ 07110, United States
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Oncology
For Oncology information or to report an adverse event, please:
Call: 888-274-2378888-274-2378 (8:30 a.m. - 5:00 p.m. Eastern Time, Monday – Friday)
Email: esi_oncmedinfo@eisai.com
Or write to: Medical Information, Eisai Inc., 200 Metro Blvd., Nutley, NJ 07110 United States
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Reimbursement
Curious about our product reimbursement and patient assistance programs (where applicable)?
Please visit our Reimbursement Resources page. Or call us at your product’s phone number, below:
ACIPHEX® (rabeprazole sodium) delayed release tablets: 1-800-769-38801-800-769-3880
ARICEPT® (donepezil hydrochloride) tablets: 1-800-769-38801-800-769-3880
BANZEL® (rufinamide): 1-855-347-24481-855-347-2448
HALAVEN® (eribulin mesylate) Injection: 1-866-61-EISAI (1-866-613-47241-866-613-4724 )
LENVIMA® (lenvatinib) capsules: 1-866-61-EISAI (1-866-613-47241-866-613-4724)
EISAI INC. (HEADQUARTERS)
200 Metro Blvd, Nutley, NJ 07110 United States
Phone: 201-692-1100
Fax: 201.746.2600
40.834314 -74.156608Eisai Center for Genetics Guided Dementia Discovery (G2D2)
35 Cambridgepark Drive Cambridge, MA 02140 United States
Phone: 857-829-6100
42.3948758 -71.1456942EXTON
210 Welsh Pool Road Exton, PA 19341 United States
Phone: 610-423-6100
Fax: 610-423-6199
40.061700 -75.647460Eisai Inc. (Manufacturing)
11675 Crossroads Circle Baltimore, MD 21220
Phone: 410-631-6300
39.35368 -76.40143Eisai Inc. (Global Logistics)
4130 Parklake Avenue, Suite 500 Raleigh, NC 27612 United States
Phone: 919-941-6920
Fax: 919-941-6931
35.8352738 -78.6905248Eisai Global Headquarters
Eisai Co., Ltd. 4-6-10 Koishikawa, Bunkyo-ku Tokyo 112-8088 Japan
Phone: +81-3-3817-3700
35.7151269 139.7397721EISAI INC. (HEADQUARTERS)
200 Metro Blvd
Nutley, NJ 07110
United States
Phone: 201-692-1100 | Fax: 201-692-1804
Open in Google MapsEisai Center for Genetics Guided Dementia Discovery (G2D2)
35 Cambridgepark Drive
Cambridge, MA 02140
United States
Phone: 857-829-6100
Open in Google MapsExton
210 Welsh Pool Road
Exton, PA 19341
United States
Phone: 610-423-6100 | Fax: 610-423-6199
Open in Google MapsEisai Inc. (Manufacturing)
11675 Crossroads Circle Baltimore, MD 21220
Phone: 410-631-6300
Open in Google MapsEisai Inc. (Global Logistics)
4130 Parklake Avenue, Suite 500
Raleigh, NC 27612
United States
Phone: 919-941-6920 | Fax: 919-941-6931
Open in Google MapsEisai Global Headquarters
Eisai Co., Ltd.
4-6-10 Koishikawa, Bunkyo-ku
Tokyo 112-8088 Japan
Phone: +81-3-3817-3700
Open in Google Maps