Tylenol (Acetaminophen) & Motrin (Ibuprofen) Dosing Guide: W
Key Differences Between Tylenol & Motrin
Tylenol (Acetaminophen):
Used for fever and pain relief (e.g., headaches, general discomfort).
Can be used over the counter in age 3 months and older
Check with your medical provider for use in under 3 months
Does not reduce inflammation.
Motrin (Ibuprofen):
Used for fever, pain, and inflammation (e.g., ear infections, sore throat).
Only for infants 6 months and older.
Consider avoiding if the child has stomach upset, a bleeding risk or kidney disease
Understanding Medication Names
What's the difference between brand-name and generic medicines?
Brand-name medicines (like Tylenol® or Motrin®):
Created by pharmaceutical companies that developed the medicine
Have trademarked names protected by law
Are typically more expensive because of research and marketing costs
Contain the same active ingredients as their generic versions
Generic medicines (Acetaminophen, Ibuprofen):
Contain the exact same active medicine
Are sold under the medicine's official name (not a brand name)
Are required by law to work exactly the same way
Cost 30-80% less than brand names
Examples you might see at the store:
Instead of Tylenol® → "Acetaminophen" (with store name like "CVS Health" or "Equate")
Instead of Motrin® → "Ibuprofen" (with pharmacy branding)
How to Measure a Temperature
Key Points for Accurate Temperature Measurement:
For infants < 3 months: Prefer rectal temperature (most accurate for this age).
For older children & adults: Oral temperature is preferred if possible.
Temporal (forehead) thermometers: Should measure core temperature but can be inconsistent. Verify readings by taking multiple measurements or checking on another person.
Tympanic (ear): use in age 2 years or older, excessive ear wax can cause temperature discrepancies
Axillary (underarm) temperature: Least accurate—use only if no other method is available.
Types of Temperature Measurements
Core Temperature (Most Accurate for Fever Detection):
Includes rectal, oral, and temporal (forehead) readings.
Tympanic (ear) Temperature:
Can be used in children 2 years and older
Axillary (Underarm) Temperature:
Least accurate method.
Not considered a core temperature—use only if no other option is available.
What Counts as a True Fever?
A true fever is a core temperature (rectal, oral, or temporal) of 100.4°F (38°C) or higher.
For detailed temperature-taking guidelines by age for fevers, refer to the chart below.
Dosing by Weight/Age
⚠️ Always use the syringe or dosing cup provided—never household spoons. Use weight before age information to dose.
Acetaminophen (Tylenol) Dosing
Charts of Tylenol (Acetaminophen) Dosing by Weight and Age, for Liquid and Tablet Medication Types
Motrin (Ibuprofen) Dosing
Chart of Motrin (Ibuprofin) Dosing by Weight and Age
Critical Safety Information
⚠️ Before giving medication:
Check that no other medicines contain acetaminophen or ibuprofen (e.g., some cold medicines)—this may lead to overdosing.
Confirm the concentration (mg/mL) on the bottle—some infant drops differ from children’s liquid.
When to Contact Poppins
To help you figure out the exact weight based and safe dosing of Tylenol or Motrin for your child
If you have questions about your child’s sick symptoms.
When to Contact Your Pediatrician
Fever ≥104°F that does not improve with medication.
Fever that lasts >3 days
Fever ≥100.4°F in an infant 2-3 months old
Pain that lasts >5 days or is worsening
When to go to the ER
Fever ≥100.4°F in a baby 2 months or younger
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