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amber_sherman2026-04-18

I've been using Giltuss TR Tablets for a few days now, and I've got to say, the chest congestion relief is fantastic. For those who don't know, these tablets combine guaifenesin, dextromethorphan, and phenylephrine to tackle various cold symptoms. Unfortunately, I'm experiencing some dizziness, and I'm wondering if that's a normal side effect or if I should be concerned.

I've also had trouble sleeping, which is a bummer because I need all the rest I can get while I'm sick. Has anyone else experienced these side effects? Are there any tips for managing them? And I'm curious if anyone knows if it's safe to take while on antibiotics?

I've been trying to find more information online, but I can't seem to find anything concrete about taking with antibiotics.

1 min read
last active 4/18/2026
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Comments (7)

J
justin_vargas4/18/2026

If you're really struggling with the side effects, maybe talk to a pharmacist or your doctor about alternatives? Sometimes there are different medications that might work better for you.

N
nancy_santos4/18/2026

I’ve been taking these for a cold, and they've been amazing for my chest congestion. But I did notice feeling a bit more nervous than usual. Anyone else experience that?

M
marie_ferguson4/18/2026

I've had the same issue with dizziness. It usually goes away after a few days, but if it persists, definitely talk to your doctor.

D
dennis_jordan4/18/2026

I've taken these before and never had any issues with them. They worked great for me, but I've had friends experience some trouble sleeping. My doctor told me to watch my dosage and don’t take them after the morning.

S
stephen_sanders4/18/2026

I’ve heard that some people get the opposite effect from these drugs, like they get sleepy instead of feeling more awake. Anyone else experience that?

R
richard_wagner4/18/2026

I had a terrible reaction to these tablets once. I woke up with hives all over my body. That's when I learned the hard way about allergic reactions. If you notice anything like that, go to the ER immediately.

L
linda_fernandez4/18/2026

Side note: if you're taking antibiotics, always check with your doctor or pharmacist before taking any new medication. Sometimes antibiotics can interact with other drugs in unexpected ways.