Infant Motrin Dosage by Weight – Complete Guide for Parents 2025
Infant Motrin Dosage by Weight: Infant Motrin (Ibuprofen) is a common medicine which doctors recommend for fever, body pain and teething pain. But the biggest doubt of the parents is – “What is the correct dose of Infant Motrin?” That is why this guide explains in simple language what the correct dosage of Infant Motrin is according to weight and how it should be used safely.
What is Infant Motrin?
Infant Motrin is an ibuprofen-based liquid medicine which is given to babies (6 months of age) for fever and pain relief.
Doctors mostly suggest it in dengue fever, viral fever, teething pain, headache, ear pain and pain/fever after vaccination.
Infant Motrin Dosage Chart (Weight Wise)
| Baby Weight (kg) | Recommended Dose | Frequency |
|---|---|---|
| 5–6 kg | 25 mg | 6–8 hours |
| 6–7 kg | 30 mg | 6–8 hours |
| 7–8 kg | 35 mg | 6–8 hours |
| 8–9 kg | 40 mg | 6–8 hours |
| 9–10 kg | 45 mg | 6–8 hours |
| 10–11 kg | 50 mg | 6–8 hours |
| 11–12 kg | 55 mg | 6–8 hours |
How to give Motrin to baby?
It is easy for parents to follow these simple steps:
- Always use the syringe/dropper that comes with the bottle.
- Shake the bottle well
- It is better to give after feeding the baby.
- Keep a gap of at least 6 hours between each dose.
- Overdose should be absolutely avoided.
Also Read: Infant Tylenol Dosage by Weight
Infant Motrin Dosage by Weight (mg Chart)
Infant Motrin dosage by weight is always calculated according to the baby’s weight, not according to age. Doctors recommend:
- 10 mg per kg
- Dose every 6–8 hours
- Maximum 4 doses in 24 hours
Infant Motrin vs Tylenol (Acetaminophen)
Many parents are confused as to which medicine should be given. In short:
- Motrin (Ibuprofen): Long-lasting pain and inflammation relief.
- Tylenol (Acetaminophen): Safe for small babies, stomach-friendly
In case of very high fever or teething pain, doctors sometimes alternate the two, but a doctor’s advice is necessary.
Also Read: Semaglutide Weight Loss Dosage Chart
When should Motrin be given?
If your baby has these symptoms, then avoid Motrin:
- Baby has is crying since 6 months
- Baby is vomiting/diarrhoea.
- Baby has kidney problems
- Baby seems dehydrated
- Baby is allergy-prone from ibuprofen
In such cases infant Motrin dosage should be absolutely avoided.
FAQs – Infant Motrin Dosage by Weight
At what age can Infant Motrin be given to a child?
6 months of its treatment to babies.
For how long does Motrin control fever?
Normally relief is given for 6–8 hours.
Is it okay to give on an empty stomach?
No, it is best to give it after some feed.
Can Tylenol and Motrin be given together?
Both are given alternately, but a doctor’s advice is necessary.
References
American Academy of Pediatrics (AAP)
Ibuprofen Dosage Guidelines for Infants & Children
https://www.healthychildren.org/English/safety-prevention/at-home/medication-safety/Pages/Ibuprofen-for-Fever-and-Pain.aspx
Mayo Clinic – Ibuprofen (Oral Route) Dosage Guide
https://www.mayoclinic.org/drugs-supplements/ibuprofen-oral-route/proper-use/drg-20070602
U.S. Food & Drug Administration (FDA)
Ibuprofen Use and Safety Information for Parents
https://www.fda.gov
Dr. Aanika Sharma is a highly experienced senior oncologist in cancer care, who has been successfully treating lung cancer for 12 years. She has done an advanced fellowship in Thoracic Oncology from Harvard University and the National Cancer Institute, United States. She has published more than 50 research articles in popular oncology journals and is well-known for her contributions in the field of cancer care. Dr. Sharma has successfully treated more than 1,000 lung cancer patients and has also received the Best Oncologist Award from the Medical Association in 2022.
