6 doctors weighed in:

What happens if you take more then one cetirizine in a 24 hour period? Does it work better?

6 doctors weighed in
Dr. Brian Bezack
Pediatrics - Pulmonology
3 doctors agree

In brief: Possible side effect

Cetirizine is only recommended to be take once every 24 hours.
Taking more than the recommended dose can be harmful in terms of increasing the chances of side effects. If your allergy symptoms are not relieved by taking over the counter anti-histamines then talk with your physician to determine additional or alternative therapies. The symptoms may be something other than allegies.

In brief: Possible side effect

Cetirizine is only recommended to be take once every 24 hours.
Taking more than the recommended dose can be harmful in terms of increasing the chances of side effects. If your allergy symptoms are not relieved by taking over the counter anti-histamines then talk with your physician to determine additional or alternative therapies. The symptoms may be something other than allegies.
Dr. Brian Bezack
Dr. Brian Bezack
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Dr. Dan Fisher
Internal Medicine
1 doctor agrees

In brief: More side effect

Taking more than one Cetirizine per 24 hours is not recommended as it is probably no more effective and you will only increase the likelihood of an adverse effect or drug interaction.
If this were an accidental ingestion, a single extra dose is unlikely to cause any significant side effect. Maybe some drowsiness.

In brief: More side effect

Taking more than one Cetirizine per 24 hours is not recommended as it is probably no more effective and you will only increase the likelihood of an adverse effect or drug interaction.
If this were an accidental ingestion, a single extra dose is unlikely to cause any significant side effect. Maybe some drowsiness.
Dr. Dan Fisher
Dr. Dan Fisher
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