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marie_ferguson2026-04-17

I've been taking Promethazine 12.5mg tablets for my allergies, and they definitely help with the sneezing and runny nose. However, I've noticed that I feel really sleepy afterwards. Has anyone else experienced this? Is it normal? I've also heard it can help with nausea and motion sickness, has anyone used it for that? I'm just wondering if the drowsiness is worth it, or if there are better alternatives out there. Is it bad that I've been taking it for a few weeks now? And what about the side effects, are they even real? I'm just trying to get the full picture on this medication.

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Comments (8)

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edward_gardner2d ago

I actually find it great for insomnia. Take a pill and I'm out like a light. But it's not worth it if you need to be awake for stuff.

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james_bradley2d ago

I heard the drowsiness can wear off after a while. Maybe just give it a few weeks and see if it gets better?

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scott_robinson2d ago

I've taken Promethazine for motion sickness during my last cruise. Worked great for me, but yeah, I was knocked out most of the day. Worth it for a smooth ride.

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kenneth_jordan2d ago

I had some really scary side effects, including weird neurological stuff. Ended up in the ER—definitely not worth it for me. Stick to antihistamines if you can.

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christine_powell2d ago

Sometimes, the old-fashioned stuff like nasal sprays and eye drops can work just as well without the drowsy side effects.

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katherine_green2d ago

I use it for nausea sometimes. Definitely makes me sleepy, but it helps. Just be careful if you have to drive or do anything important afterward.

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beverly_spencer2d ago

I took Promethazine for allergies and it was a lifesaver. But I am used to feeling tired when I take allergy medications. I’d say it’s worth it for the relief.

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david_okonkwo2d ago

Just be careful with the adverse effects. I had a friend who ended up with some weird heart issues. Not fun.