What Advil (ibuprofen) dose is recommended for a 50‑lb child?
For children, Advil dosing is based on weight. A common pediatric dosing guideline for ibuprofen is 10 mg per kg per dose given every 6 to 8 hours as needed (maximum depends on the product guidance, but often no more than 40 mg/kg/day, with a typical daily cap on the mg amount) [1][2].
A child who weighs 50 lb is about 22.7 kg. Using 10 mg/kg per dose:
- Dose per administration: 22.7 kg × 10 mg/kg ≈ 227 mg ibuprofen per dose
- That typically corresponds to roughly 200 mg (closest common tablet/liquid strength) depending on the concentration of the liquid and the dosing device.
Because Advil comes in different formulations (infant drops, children’s liquid, chewables/caps, etc.), the exact “mL” or “number of tablets” depends on the product strength—so check the specific label for your bottle.
How often can you give it, and what’s the daily maximum?
Ibuprofen is usually given every 6 to 8 hours as needed for pain or fever, not on a fixed schedule. Most pediatric guidance limits use to up to 3 to 4 doses in 24 hours and/or a maximum daily total mg/kg/day (commonly 40 mg/kg/day) [1][2].
If your child needs it for more than 2–3 days for fever or pain, you should contact a clinician for advice.
What units should you measure: mL vs tablets?
To convert the mg dose (~227 mg for a 50‑lb child) into mL:
1. Look at your Advil bottle’s concentration (for example, mg per mL).
2. Divide the target mg dose by the mg per mL on the label to get the mL per dose.
If you tell me which exact product you have (children’s suspension concentration in mg per mL or the strength of tablets/chews), I can help you translate the ~227 mg target into the correct mL or number of tablets.
When not to give Advil (important safety checks)
Avoid or ask a clinician first before using ibuprofen if the child has:
- Known ibuprofen or NSAID allergy
- History of stomach ulcers or GI bleeding
- Kidney disease or significant dehydration (e.g., not drinking/continuous vomiting)
- Certain serious illnesses or medication interactions
- Chickenpox (some guidance advises avoiding NSAIDs in that situation) [1][2]
Seek urgent care if there are signs of severe illness, breathing trouble, persistent vomiting, extreme lethargy, or worsening symptoms.
Can I use Tylenol (acetaminophen) instead or alternate them?
Yes, acetaminophen is often used for fever/pain dosing by weight, and some clinicians advise alternating medications only under specific guidance. Because alternating schedules vary and can lead to dosing errors, it’s safer to follow your product labels or your child’s clinician’s instructions.
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Sources
[1] https://www.drugs.com/ibuprofen-dosage.html
[2] https://www.ncbi.nlm.nih.gov/books/NBK537065/