The usual dose of Tylenol for a 6 month old infant is:

  •  2.5 mL of Infants' Tylenol Oral Suspension (160 mg/5mL). This translates to a dose of 80 mg of Tylenol (acetaminophen).

It is extremely important to verify the concentration of your product to ensure accurate dosing. While Infants' Tylenol has a concentration of 160mg/5mL, other generic products may use a different concentration.

For example, Infants' Tylenol was previously available in a concentration of 80mg/0.8 mL, although it is no longer marketed. Other generic manufactures however, may be using different concentrations. Different products with different concentrations have been known to cause confusion and dosing errors.

The FDA has posted a FAQ regarding this matter.

In addition, it is important to note that you should speak to your doctor before dosing Tylenol for anyone under 2 Years old.

Tylenol Dosing 6 Month Old

As mentioned above, the usual dose for a 6 month old is 2.5 mL of Infants' Tylenol Oral Suspension (160 mg/5mL). 

However, for infants and children, Tylenol should ideally be based on weight, not age. If dosing by weight not possible, dosing based on age is considered safe for most individuals.

Below, we discuss more specific dosing guidelines for infants.

Tylenol Dosing For Infants

For infants, the dosage range of Tylenol is:

  • 10 to 15 milligrams per kilogram per dose.
  • In pounds, this translates to around 4.5 milligrams to 6.8 milligrams per pound per dose.

As an example, consider a 17 pound (7.7 kilogram) pound infant, about the average weight of a 6 month old. The safe dosage range would be between 76 mg and 115mg. 

Below is a dosage chart for Infants' Tylenol.

Infants’ TYLENOL (160mg/5mL) Oral Suspension Dosage Chart

6 to 11 Pounds0 to 3 Months1.25 mL
12 to 17 Pounds4 to 11 Months2.5 mL
18 to 23 Pounds12 to 23 Months3.75 mL
24 to 35 Pounds2 to 3 Years5 mL

Each dose may be given every 4 hours as needed but you should not give more than 5 doses in 24 hours. As stated above, weight based dosing is the best way to determine the appropriate Tylenol Dose. If weight is unknown, use age. 

Below, is a graphic provided from, that offers a different visual representation of appropriate Tylenol doses for infants and young children.

Infants and 6 month old Tylenol Dosage Chart

Source: (Note: For Children Under 2 Years Old - Speak With Your Doctor Before Dosing)


  • The dose of Tylenol for a 6 month old is typically 2.5 mL of Infants' Tylenol Oral Suspension (160mg/5mL). This translates to a dose of 80mg.
  • Doses of Tylenol for infants and children should ideally be based on weight. If weight is unavailable, use age.
  • Pay special attention to the concentration of the product you are using.
    • 160mg/5mL is the most common, but concentrations can vary.