Clonidine Pediatric Dose — Hypertension Management
Clonidine is a centrally acting alpha-2 adrenergic agonist that reduces sympathetic outflow, resulting in decreased systemic vascular resistance and heart rate. It is used in pediatric patients for the management of hypertension when oral therapy is appropriate. In addition to its antihypertensive role, clonidine has applications in attention and pain management, though the dosing described here pertains specifically to hypertension.
Pediatric Dosing
The recommended oral dose for hypertension is 5–25 mcg/kg/day PO, divided every 8 hours (three times daily). Therapy is typically initiated at the lower end of the dosing range and titrated based on blood pressure response and tolerability.
- Starting dose: 5 mcg/kg/day PO divided every 8 hours
- Maintenance range: 5–25 mcg/kg/day PO divided every 8 hours
Worked example — 20 kg child:
At 5 mcg/kg/day: 20 × 5 = 100 mcg/day → approximately 33 mcg per dose every 8 hours
At 25 mcg/kg/day: 20 × 25 = 500 mcg/day → approximately 167 mcg per dose every 8 hours
Maximum daily dose and absolute dose caps are not specified in the source description; consult institutional protocol for upper dose limits in your patient population.
Indications and Clinical Context
Clonidine is indicated in this context for the treatment of pediatric hypertension, classified as a centrally acting antihypertensive agent. It is considered a second-line or adjunctive oral antihypertensive option in children when first-line agents (e.g., ACE inhibitors, calcium channel blockers) are insufficient or not tolerated. Per the American Academy of Pediatrics clinical practice guidelines on pediatric hypertension, pharmacologic therapy is initiated when lifestyle modifications fail or when stage 2 hypertension or symptomatic hypertension is present.
The divided dosing schedule (every 8 hours) reflects clonidine’s intermediate duration of action and the need for consistent sympatholytic coverage throughout the day to achieve stable blood pressure control.
Administration and Monitoring
Clonidine is administered orally for this indication. Doses should be given at consistent intervals to minimize blood pressure fluctuations. Abrupt discontinuation must be avoided, as rebound hypertension can occur; doses should be tapered gradually when discontinuing therapy.
- Route: Oral (PO) only per source description
- Frequency: Every 8 hours (three times daily)
- Monitor: Blood pressure, heart rate, and signs of excessive sedation or bradycardia
- Adverse effects: Sedation, dry mouth, bradycardia, and hypotension are the most clinically relevant concerns in pediatric patients
- Contraindications/cautions: Use with caution in patients with pre-existing bradycardia or conduction abnormalities; consult institutional protocol for renal dosing adjustments
Disclaimer: This article is an educational reference summarizing standard pediatric dosing values. It is not a substitute for clinical judgment. Always verify doses against institutional protocols, the current edition of authoritative references (e.g., Lexicomp, Harriet Lane Handbook, PALS guidelines), the patient’s accurate weight, and any patient-specific factors (renal/hepatic function, allergies, comedications) before administration.