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richardhenry's avatar

Does antihistamine have any side effects if you take above the recommended dosage for extended periods of time?

Asked by richardhenry (5629 points) | asked June 10th, 2008 | 13 responses

I get hay-fever sometimes, and occasionally take 20mg (works perfectly) instead of the recommended 10mg (doesn’t do much).

Are there any side effects to taking an increased dosage? I tend to do it for a three to four week period once a year.

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