Quick Links
Contact us

Submit a medical question on an Otsuka product.

To discuss a medical inquiry on an Otsuka product, please call 1-800-441-67631-800-441-6763.

To report an adverse event or a product quality complaint, please call 1-800-438-99271-800-438-9927.
Featured news
Otsuka Announces FDA Plans to Host an Advisory Committee Meeting to Discuss the sNDA for Brexpiprazole in Combination with Sertraline for the Treatment of Adults with Post-Traumatic Stress Disorder (PTSD)
NeuroscienceOtsuka America Pharmaceutical, Inc., (OAPI) and Otsuka Pharmaceutical, Co., Ltd. (Otsuka) announce that the U.S. Food and Drug Administration (FDA) plans to host a Psychopharmacologic Drugs Advisory Committee (PDAC) meeting to seek input on issues related to the Supplemental New Drug Application (sNDA) for brexpiprazole in combination with sertraline for the treatment of adults with post-traumatic stress disorder (PTSD).
JAMA Psychiatry Publishes Results of Otsuka and Lundbeck's Phase 3 Trial of Brexpiprazole in Combination with Sertraline in Treatment of Post-Traumatic Stress Disorder (PTSD) in Adults
NeuroscienceOtsuka Pharmaceutical Development & Commercialization, Inc. and Lundbeck LLC today announced that the full results of a Phase 3 trial of brexpiprazole in combination with sertraline for the treatment of PTSD in adults have been published in JAMA Psychiatry.
Otsuka Provides Update on Sibeprenlimab, an Investigational Monoclonal Antibody for the Treatment of IgA Nephropathy in Adults
NephrologyOtsuka Pharmaceutical Development & Commercialization, Inc. (OPDC) and Otsuka Pharmaceutical, Co. Ltd. (Otsuka) announce the decision to submit a Biologics License Application (BLA) in the U.S. for sibeprenlimab, an investigational drug for the treatment of immunoglobulin A nephropathy (IgA nephropathy) in adults, in the first half of 2025. The update follows a recent meeting with the U.S. Food & Drug Administration to discuss the positive interim analysis results from the Phase 3 VISIONARY study (NCT05248646).