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eric_reyes2026-04-17

Cetirizine 5mg Chewable Tablets are often touted as a non-drowsy antihistamine, but I've been feeling unusually sleepy since I started taking them. I'm wondering if anyone else experiences this side effect, or if it's just me. I'm also curious to know if the chewable form makes any differences in how effective the medication is. I have read that Cetirizine works by blocking histamines, but I don't know enough about it. I have also started feeling tired and weak. Should I be worried and consult a doctor?

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last active 4h ago
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Comments (9)

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martha_lane1d ago

Drowsiness is a common side effect, but usually not severe. If you're feeling unusually tired, it could be something else. I'd talk to your doctor. Antihistamines do cause drowsiness, but they can also cause other side effects, like stomach pain or headache, so you might want to mention that too.

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nancy_herrera1d ago

Cetirizine might not be the best for everyone. My friend started taking it and had a really bad reaction. I'm glad I never tried it.

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william_owens1d ago

I take the regular Cetirizine 10mg and it works great for me. I barely feel any drowsiness. If you're feeling really tired, maybe consider switching to that?

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billy_cook1d ago

I've never felt drowsy, but I do get a really dry mouth sometimes. If you're feeling weak or unusually tired, definitely consult your doctor. But maybe try switching to a different allergy medication.

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marie_ferguson1d ago

I switched to the chewable ones because my kids had trouble swallowing the regulars. They do make a difference in terms of ease of use, but they taste horrible!

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christine_powell1d ago

I switched from the regular tablets to the chewable ones and found them much easier to take, but I still feel drowsy. It's a bit annoying but not unbearable. Going to talk to my doctor about it.

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christian_cox1d ago

I've been taking Cetirizine for years and it's never made me drowsy. Maybe it's something else causing your fatigue?

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eric_reyes1d ago

Why do they say non-drowsy on the label? I feel like I could sleep for days!

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lauren_meyer1d ago

Cetirizine is my favorite. Works every time.