For pretreatment recommendations, see Full Prescribing Information. Recommended dosage is 1 mg/kg every 2 weeks administered as an intravenous infusion. For dosage and administration modifications due to hypersensitivity reactions or infusion-associated reactions (IARs), see Full Prescribing Information. For instructions on preparation (including dilution), storage, and administration (including rates for the initial 4-6 infusions for ERT-experienced and ERT-naïve patients), see Full Prescribing Information. 2. 1 Recommendations Prior to ELFABRIO Treatment Pretreatment In enzyme replacement therapy (ERT)-experienced patients, if pretreatment with antihistamines, antipyretics, and/or corticosteroids was used prior to ERT administration, consider similar pretreatment with these medications before the first several ELFABRIO infusions.