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No, you don't want to take two of the same medications. If the Zyrtec is not taking care of your Allergies, don't take a second antihistamine on top of it. You need to switch from Zyrtec to some other antihistamine. It might be time to see your doctor and try a stronger antihistamine. Taking too much antihistamine can cause breathing difficulty.

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12y ago
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12y ago

Haven't tried robitussin but zyrtec puts me to sleep.

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10y ago

Yes, dextromethorphan is just a cough supressant.

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13y ago

yes..

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Q: Can you take Zyrtec and diphenhydramine?
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