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A member asked:

What would happen if i took too much allegry medicine? would i just get sleepy? anything else bad?

A doctor has provided 1 answer

Antihistamine: The newer generations, mostly just sleepy. Some of the older allergy medications such as Diphenhydramine (benadryl) also can have some anticholinergic properities and cause cardiac rhythm problems and bowel bladder problems at very high doses.

Dr Ali and another doctor agreed

Answered 6/25/2014

5.7k views

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Occasionally I take Montelukast/Levocetrizine 10/5 mg med. for allergy, next day drowsiness, groggy feeling occur throughout day makes me unable to function .I can stay partly asleep whole day, the effect is so bad. Is there any alternative medicine?

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