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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Dizziness After Taking Mucinex D?

I was prescribed muscillix-d to treat a sinus infection or cold I had been suffering from for the past week. When I took the mucus-d that evening, (which the pharmacist clerk had given me that was not over the counter, but was actually in back of the counter where the pharmacist was working. Why was it not over-the-counter? 2nd ? ...a couple hours after taking the mucus-d, when I got in bed, I was so dizzy and it seemed that the room was spinning around, ... it frightened me, so I sat up for a little while, but when I laid down again, the dizziness re-occurred and it felt as if the bed was shaking.. was this an allergic reaction to mucus-d, also, this was the first time I have ever taken it.
Tue, 13 Nov 2018
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  Anonymous's Response
's  Response
Hi,

A component of Mucinex D which is causing your dizziness is Pseudoephedrine. This component acts to shrink the inflammation in your sinuses to permit drainage of the mucus. However, as it acts in general in the central nervous system to do its effect, side effects are common like palpitations, drowsiness, dizziness.

I suggest using other nasal decongestants which don't have pseudoephedrine. This may include nasal sprays like saline sprays or even Oxymetazoline nasal sprays (but is limited of use as it may cause rebound nasal congestion).

But with this, I still recommend a follow-up check-up with your doctor for a re-evaluation and shifting of your medications.

For it is not an over the counter drug is that is part of the family of amphetamines, which in turn makes it a regulated drug.

Hope I have answered your query. Let me know if I can assist you further.

Regards,
Dr. Daryl Derick B. Dizon,
General & Family Physician
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What Causes Dizziness After Taking Mucinex D?

Hi, A component of Mucinex D which is causing your dizziness is Pseudoephedrine. This component acts to shrink the inflammation in your sinuses to permit drainage of the mucus. However, as it acts in general in the central nervous system to do its effect, side effects are common like palpitations, drowsiness, dizziness. I suggest using other nasal decongestants which don t have pseudoephedrine. This may include nasal sprays like saline sprays or even Oxymetazoline nasal sprays (but is limited of use as it may cause rebound nasal congestion). But with this, I still recommend a follow-up check-up with your doctor for a re-evaluation and shifting of your medications. For it is not an over the counter drug is that is part of the family of amphetamines, which in turn makes it a regulated drug. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Daryl Derick B. Dizon, General & Family Physician