That's an overdose: 32-48 mg is definitely an overdose of chlorpheniramine. The maximum over-the-counter recommended dose is 4 mg every 4-6 hours (24 mg max/day). There are extended-release forms that have higher doses, but they are also meant to last 12 hours or longer. 32-48 mg will likely cause dry mouth, eyes, etc., as well as excessive drowsiness. I don't recommend at all that high a dose.
Answered 9/7/2016
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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