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To report an adverse event experience for any Alexion product please contact us at or 1-844-259-6783. To report an issue or complaint with an Alexion product please contact us at 

For SOLIRIS, STRENSIQ, KANUMA or ULTOMIRIS order inquires, customer operations, case management, medical information, product complaints, or to inquire about the SOLIRIS REMS program or ULTOMIRIS REMS program, please call 1-888-765-4747.