Merck announces that ONTRUZANT® (trastuzumab-dttb) for injection, for intravenous use 21 mg/mL, a biosimilar* to Herceptin® (trastuzumab), is available through specialty distributors and wholesalers.

Merck Sharp & Dohme Corp. (“Merck”), a subsidiary of Merck & Co., Inc., is pleased to announce that ONTRUZANT® (trastuzumab-dttb) for injection, for intravenous use 21 mg/mL, a biosimilar* to Herceptin® (trastuzumab), is available through specialty distributors and wholesalers. Please contact your specialty distributor or wholesaler to confirm product availability.

Before prescribing ONTRUZANT, please read the Prescribing Information, including the Boxed Warning about cardiomyopathy, infusion reactions (pulmonary toxicity), and embryo-fetal toxicity.



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