Motrin (Ibuprofen) Dosage by Weight Calculator
Recommended Dosage:
Frequency: Every 6 to 8 hours as needed.
Maximum: Do not exceed 4 doses in a 24-hour period.
Understanding Motrin (Ibuprofen) Dosage
Motrin, also known by its generic name Ibuprofen, is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain and reduce fever. For children, the safest way to determine the correct dose is by their current weight, rather than their age. This ensures the medication is both effective and safe for their specific size.
How This Calculator Works
The standard pediatric dose for Ibuprofen is approximately 10 milligrams (mg) per kilogram (kg) of body weight. Our calculator uses this clinical standard to provide an accurate measurement based on the specific concentration of the Motrin product you have at home.
Standard Motrin Concentrations
- Infant Drops: Highly concentrated (50 mg per 1.25 mL). Always use the syringe provided with the product.
- Children's Liquid: Standard concentration (100 mg per 5 mL / 1 teaspoon).
- Chewable Tablets: Usually 100 mg per tablet.
- Junior Strength: Usually 200 mg per tablet or capsule.
Motrin Dosage Chart by Weight (Approximate)
| Weight (lbs) | Infant Drops (50mg/1.25mL) | Children's Liquid (100mg/5mL) |
|---|---|---|
| 12-17 lbs | 1.25 mL | 2.5 mL (1/2 tsp) |
| 18-23 lbs | 1.875 mL | 3.75 mL (3/4 tsp) |
| 24-35 lbs | 2.5 mL | 5 mL (1 tsp) |
| 36-47 lbs | 3.75 mL | 7.5 mL (1.5 tsp) |
Important Safety Guidelines
- Consult a Doctor: Always talk to a pediatrician before giving Motrin to an infant under 6 months of age.
- Use Correct Tool: Always use the dosing syringe or cup that came with the specific bottle of medicine. Kitchen spoons are not accurate.
- Verify Ingredients: Ensure other cold or flu medications you are giving do not also contain ibuprofen to avoid overdose.
- Wait Time: Motrin should not be given more frequently than every 6 hours.
Disclaimer: This calculator is for informational purposes only and does not replace professional medical advice. If your child is sick, always consult with a licensed healthcare provider for an exact diagnosis and treatment plan.