Onden dose 25 kg child
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Onden ondansetron syrup dose child mg/kg brand India
Onden is a brand name for ondansetron, a 5-HT3 receptor antagonist antiemetic. Dosing for a 25 kg child depends on the indication:
For acute gastroenteritis-related vomiting (most common use, ED/outpatient)
A 25 kg child falls in the 15-30 kg weight band, so the standard simplified oral dose is:
4 mg, single oral dose (syrup, tablet, or orally-disintegrating tablet)
This matches the weight-based calculation: 0.15 mg/kg x 25 kg = 3.75 mg, rounded up to the nearest available strength (4 mg). This is consistent across the Roberts and Hedges' Clinical Procedures in Emergency Medicine, the Canadian Paediatric Society position statement, and the Children's Mercy gastroenteritis care pathway:
| Weight band | Oral dose |
|---|---|
| 8-15 kg | 2 mg |
| 15-30 kg | 4 mg |
| >30 kg | 6-8 mg |
- Roberts and Hedges' Clinical Procedures in Emergency Medicine, oral rehydration section
- Give as a single dose; repeat/multi-dosing has not shown added benefit for this indication
- Start oral rehydration 15-30 minutes after the dose
- Max single dose generally capped at 8 mg PO for this indication
For chemotherapy-induced nausea/vomiting
- 0.15 mg/kg per dose IV (for 25 kg = ~3.75 mg, typically rounded to 4 mg)
- Given 30 min before chemo, then repeated at 4 and 8 hours after the first dose
- Max 16 mg/dose per US labeling, though many guidelines cap pediatric single doses lower (8 mg oral once daily in some regimens)
For postoperative nausea/vomiting (PONV) prevention
- 0.1 mg/kg IV, up to a maximum of 4 mg, given as a single slow IV injection
Important cautions
- Ondansetron can cause QT prolongation - avoid in children with congenital long QT syndrome, and use caution with other QT-prolonging drugs or electrolyte abnormalities (Tintinalli's Emergency Medicine).
- Diarrhea is a recognized side effect, more common than with placebo.
If you can tell me which indication applies (gastroenteritis vomiting, chemo-related, or post-op), I can narrow this down to a single precise dose and route.
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