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accidentally took two zyrtec

A female asked:
Dr. Carey Check
A Verified Doctor answered
A US doctor answered Learn more
Wait: Medication can lose it's effectiveness past expiration date, but I would not expect it to not be effective at all; especially if only 18 months expire ... Read More

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A 35-year-old female asked:
Dr. Ibrahim Al-Sanouri
27 years experience Allergy and Immunology
No : Just try to avoid taking any other anti histamine for the next 24 h you may also avoid driving to tuning heavy machinery as u naught be sleepy.
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6 thanks
A 27-year-old female asked:
Dr. Al Hegab
Dr. Al Hegab answered
40 years experience Allergy and Immunology
No, but: it may cause drowsiness, so don't drive or operate machinery if this happens. You can go back to schedule tomorrow at 7 am , or change it to midnight( ... Read More
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1 thank
A female asked:
Dr. Robert Kwok
33 years experience Pediatrics
Probably ok: Zyrtec syrup and Claritin syrup are for children, so 5mL of syrup is 5mg (half the dose of an adult pill). Zyrtec pills are 10mg, and one a day is the ... Read More
A 37-year-old member asked:
Dr. Michael Zacharisen
33 years experience Allergy and Immunology
Not likely: Zyrtec (cetirizine) is a new generation with a good safety profile. While the usual dose of zyrtec is 10 mg once a day for allergies, there is scient ... Read More
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15 thanks
A 33-year-old member asked:
Dr. Gregory Mosolf
25 years experience Pediatrics
Call poison control: Usually too much zyrtec (cetirizine) would not cause any harm. If you gave two to three times the recommended dose i wouldn't worry about it. Is the c ... Read More
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1 comment
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9 thanks
A 18-year-old male asked:
Dr. John Chiu
Dr. John Chiu answered
57 years experience Allergy and Immunology
No: The dose of Zyrtec can reach four-folds or more without any ill effects (other than drowsiness for some people). The dose of actifed is limited by the ... Read More
A 49-year-old member asked:
Dr. John Norvell
21 years experience Allergy and Immunology
No: There are people that are prescribed zyrtec (cetirizine) up to four times a day for various conditions. It should be no problem to take zyrtec (cetir ... Read More
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1 comment
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11 thanks
A 37-year-old member asked:
Dr. Thomas Byrnes
29 years experience Family Medicine
Sedation: That dose of zyrtec is going to be very sedating. This defeats the purpose of taking zyrtec instead of benadryl (diphenhydramine). That level of sed ... Read More
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5 thanks
A 28-year-old male asked:
Dr. Brad Goldenberg
36 years experience Pediatrics
Depends: Recommended dosing is 10 mg daily, this can be adjusted up with the guidance of al allergist, make sure you discuss this when you make an appointment ... Read More

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