Prochlorperazine is not used for migraine ... infusion into a vein. The recommended dosage, measured in milligrams (mg), varies by the drug formulation, the condition being treated, and the ...

<2yrs or <20lbs: not recommended. Oral: 20–29lbs: 2½mg once or twice daily; max 7.5mg/day. 30–39lbs: 2½mg 2–3 times daily; max 10mg/day. 40–85lbs: 2½mg 3 times daily or 5mg twice daily ...

Change from intramuscular to oral as soon as possible. When administering prochlorperazine rectally, the dosage interval varies from 8 to 24 hours, depending on the child's body weight.