Cetrizine dose for 13yrs old 40kg
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cetirizine dose children 12 years 40kg pediatric
Cetirizine Dose - 13 Years Old, 40 kg
Dose: 10 mg once daily (oral tablet or 10 mL of 5 mg/5 mL syrup)
Dosing Summary
| Age | Dose | Max Daily |
|---|---|---|
| 6-11 years | 5-10 mg once daily | 10 mg |
| ≥12 years | 10 mg once daily | 10 mg |
At 13 years old, adult dosing applies. Weight (40 kg) does not change the dose at this age - cetirizine switches to a flat 10 mg/day from age 12 onward, regardless of weight.
Formulations
| Formulation | Dose |
|---|---|
| 10 mg tablet | 1 tablet once daily |
| Syrup 5 mg/5 mL | 10 mL (2 tsp) once daily |
| 5 mg chewable tablet | 2 tablets once daily |
Key Points
- Give once daily, preferably in the morning or evening (consistent timing)
- Max daily dose: 10 mg - do not exceed
- Cetirizine is a second-generation antihistamine; it causes less sedation than diphenhydramine but can still cause mild drowsiness in some patients
- Not recommended for colds - primarily for allergic rhinitis, urticaria, and allergic skin conditions
- Renal caution: if the patient has kidney impairment, dose may need reduction (consult prescriber)
paracetamol injection dosage im for 13yrs old 40kg
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paracetamol injection IM intramuscular route available
Paracetamol Injection - 13 Years Old, 40 kg
Important Note on IM Route
Paracetamol IM injection exists in some countries (e.g., parts of Africa, South/Southeast Asia) as a 150 mg/mL formulation, but it is NOT approved or available in the US, UK, EU, or Australia. In those regions, only the IV infusion form (10 mg/mL, e.g., Perfalgan) is licensed.
- If you are in a country where the 150 mg/mL IM formulation is available (e.g., JB Pharma Ifimol, Philopara), the following applies.
Dose for 13 Years / 40 kg
Dose-based calculation: 10-15 mg/kg/dose
| Weight | Dose (10 mg/kg) | Dose (15 mg/kg) |
|---|---|---|
| 40 kg | 400 mg | 600 mg |
- Standard recommended dose: 10-15 mg/kg every 4-6 hours
- For 40 kg: give 400-600 mg per dose
Using 150 mg/mL Formulation (IM)
| Dose | Volume to draw |
|---|---|
| 400 mg | 2.67 mL |
| 500 mg (practical round-up) | 3.3 mL |
- Administer as deep IM injection
- Maximum per dose: do not exceed 600 mg (15 mg/kg)
- Maximum daily dose: 60 mg/kg/day, not exceeding 2 g/day in children
- Frequency: every 4-6 hours
- Max 5 doses in 24 hours, for no more than 5 days
IV Infusion (Standard in most countries)
If only IV paracetamol is available (10 mg/mL, e.g., Perfalgan):
| Weight | Dose | Volume of 10 mg/mL |
|---|---|---|
| 40 kg | 15 mg/kg = 600 mg | 60 mL infused over 15 minutes |
Warnings
- Hepatotoxicity risk - do NOT exceed maximum daily dose
- Avoid in patients with liver disease or malnutrition
- Benzyl alcohol is present in some IM formulations - avoid in neonates (not relevant here at 13 yrs)
- IM route is less preferred than IV due to variable absorption; use IV when available
- The IM form is not available in most Western countries - always confirm local formulary
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