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Chlorpheniramine Dosage Table

Child's weight (pounds) 22-32 33-43 44-54 55-65 66-76 77-87 88+ lbs
Liquid 2 mg/1 teaspoon (tsp) ½ ¾ 1 1 2 tsp
Liquid 2 mg/5 milliliters (ml) 2.5 4 5 5 7.5 7.5 10 ml
Tablets 4 mg. -- -- ½ ½ ½ 1 1 tablets

Indications: For allergic reactions, nasal allergies, hives and itching.

Table Notes:

  • AGE LIMIT: For allergies, don't use under 1 year of age (Reason: it's a sedative). For colds, not recommended at any age (Reason: no proven benefits) and should be avoided if under 4 years old. 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 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.
  • ADULT DOSAGE:  4 mg. Repeat every 6-8 hours as needed
  • 6-12 years LONG-ACTING (L.A.) DOSAGE: 8 mg long-acting (LA) tablet every 12 hours as needed
  • 12 years and older LONG-ACTING (L.A.) DOSAGE: 12 mg long-acting (LA) tablet every 12 hours as needed
  • Brompheniramine dosage is the same as chlorpheniramine dosage

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Disclaimer: This information is not intended to be a substitute for professional medical advice. It is provided for educational purposes only. You assume full responsibility for how you choose to use this information. For more information, click here.

Copyright: Copyright 1994-2012 Barton D. Schmitt, M.D.
Author and Senior Reviewer: Barton D. Schmitt, M.D.
Last Revised: 8/16/2011
Content Set: Pediatric HouseCalls Symptom Checker
Version Year: 2012

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