Neonatal Seizure Phenobarbital Loading Dose

Calculate phenobarbital loading dose for neonatal seizures: standard 20 mg/kg IV. Additional doses of 5-10 mg/kg may be given every 15-30 minutes up to maximum 40 mg/kg. Infuse at 1 mg/kg/min or slower.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How to Use

Enter the values for the scenario you are assessing. Calculate phenobarbital loading dose for neonatal seizures: standard 20 mg/kg IV. Additional doses of 5-10 mg/kg may be given every 15-30 minutes up to maximum 40 mg/kg. Infuse at 1 mg/kg/min or slower. Use the neonatal phenobarbital dose result to inform your calculation.

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