Health Library Explorer
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A-Z Listings Contact Us

911 warning

Dextromethorphan Dosage Table

Return to Index

Dextromethorphan Dosage Table

Child's weight (pounds)

16-31

32-47

48-63

64-79

80-95

96-129

130+

lbs

Liquid 5 mg/ 1 teaspoon (tsp)

½

1

2

3

--

tsp

Liquid 5 mg/ 5 milliliters (ml)

2.5

5

7.5

10

12.5

15

--

ml

Liquid 7.5 mg/1 teaspoon (tsp)

--

--

1

1

2

3

tsp

Liquid 7.5 mg/ 5 milliliters (ml)

--

--

5

5

7.5

10

15

ml

Liquid 10 mg/1 teaspoon (tsp)

--

--

--

1

1

2

tsp

Liquid 10 mg/ 5 milliliters (ml)

--

--

--

5

5

7.5

10

ml

Indication: Cough suppressant. Dextromethorphan (DM) is present in most cough syrups.

Table Notes:

  • AGE LIMIT: Don’t use under 4 years of age.

  • Over 4 years of age: NOT recommended as primary treatment of cough. Use HONEY instead.

  • Avoid multi-ingredient products in children under 6 years of age. (Reason: FDA recommendations 10/2008).

  • DOSAGE: Determine by finding child's weight in the top row of the dosage table.

  • MEASURING the DOSAGE: Syringes and droppers are more accurate than teaspoons. If possible, use the syringe or dropper that comes with the medication. If not, medicine syringes are available at pharmacies. If you use a teaspoon, it should be a measuring spoon. Regular spoons are not reliable. Also, remember that 1 level teaspoon equals 5 ml and that ½ teaspoon equals 2.5 ml.

  • FREQUENCY: Repeat every 6-8 hours as needed

  • ADULT DOSE: 20 mg

Author and Senior Reviewer: Barton D. Schmitt, M.D.

Content Set: Pediatric HouseCalls Symptom Checker

Pediatric HouseCalls Symptom Checker

© 2000-2019 The StayWell Company, LLC. 800 Township Line Road, Yardley, PA 19067. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
Contact Our Health Professionals
Follow Us