What are the most common side effects of Zyrtec?
According to the Zyrtec medication guide, one of the most common side effects of Zyrtec (cetirizine) is drowsiness. Drowsiness is reported in about 1 in 5 people taking the medication. This side effect is more common when taking Zyrtec in higher doses or when combining it with other medications that cause drowsiness.
How does Zyrtec interact with other medications?
Zyrtec can interact with certain medications that cause drowsiness, increasing the risk of drowsiness. These medications include [1] antidepressants like Elavil, Pamelor, and Tofranil, and [2] sedatives like Xanax and Valium. Additionally, individuals taking Zyrtec with other antihistamines, such as Benadryl, are also more likely to experience drowsiness.
Can Zyrtec cause drowsiness in children?
Yes, Zyrtec can cause drowsiness in children. In fact, the Zyrtec pediatric medication guide warns parents that the medication may cause drowsiness or irritability in some children. Parents should monitor their child's behavior and report any concerns to their doctor.
What happens if I take Zyrtec with other medications that cause drowsiness?
Combining Zyrtec with other medications that cause drowsiness can increase the risk of excessive drowsiness. If you are taking multiple medications that cause drowsiness, you should discuss your medication regimen with your doctor to minimize the risk of drowsiness.
How long does it take for Zyrtec to cause drowsiness?
The exact time it takes for Zyrtec to cause drowsiness varies from person to person. According to the National Institutes of Health, drowsiness typically occurs within 1-2 hours of taking Zyrtec, but it can last for several hours.
Sources:
[1] https://www.drugs.com/drug-interactions/zyrtec
[2] https://www.mayoclinic.org/symptoms/drowsiness/basics definition/md000104
[3] https://www.zyrtecd.com/medication-guide
[4] https://www.zyrtecd.com/medication-guide-kids
[5] https://medlineplus.gov/druginfo/meds/a695009.html