Some hospitals push 8mg still but I say why risk it.... Clinical Pharmacology states: "Intermittent IV Infusion: For doses more than 4 mg and for chemotherapy-induced nausea and vomiting (CINV), dilute to a maximum concentration of 1 mg/mL in 5% Dextrose Injection or 0.9% NaCl Injection. Infuse IV over 15 minutes. Storage: Dilution is stable for 48 hours at room temperature."