Can Benadryl and Zyrtec cause dizziness?

Yes, both Benadryl (diphenhydramine) and Zyrtec (cetirizine) can cause dizziness as a potential side effect. Benadryl, an older antihistamine, is more likely to cause sedation and dizziness due to its sedative properties. Zyrtec, a newer antihistamine, is less sedating but can still lead to dizziness in some individuals. If experiencing significant dizziness, it's best to consult a healthcare professional.