What is the maximum daily dosage for pseudoephedrine?

The maximum daily dosage for pseudoephedrine is 240 milligrams (mg.). Your actual dosage may vary based on the brand you use and the severity of your symptoms. For example, immediate-release tablets contain 30 to 60 mg. of pseudoephedrine, and should be taken every four to six hours as needed. An extended-release tablet contains 120 mg. of pseudoephedrine. You should not take more than one of these tablets in a 12-hour period or two in 24 hours. The maximum daily dose for a child six to 12 years of age is 120 mg. The maximum daily dose for a child four to five years of age is 60 mg. Talk to your doctor if you have questions about what is a safe and effective dosage for you.