What Causes Sleeplessness And Fast Heart Beat After Having Advil And NyQuil?
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Detailed Answer:
Hello,
There are various NyQuil products. Some of them contain pseudoephedrine which could be the cause of your symptoms. You can check the package to find out if it contains pseudoephedrine or tell me the full name of the product. NyQuil D contains pseudoephedrine and NyQuil sinus contains phenylephrine which is a similarly acting substance (with similar side effects).
If your product contains any of them then you should avoid taking too much.
You should check the Gatorade composition too. If it contains caffeine it may also cause a fast heart rate, particularly when used concurrently with pseudoephedrine or phenylephrine.
Please note that you're not supposed to feel like that, if you only took a single pill.
If this is your case then you can do nothing more than wait for the effect to disappear.
Also take into account that the flu may (very rarely though) cause heart problems like myocarditis which can present with a fast heart rate and perhaps chest discomfort. If the symptoms are intense or your pulse is irregular (not beating regularly like a clock) then I suggest you visit a cardiologist to do an electrocardiogram.
I hope I've helped!
If you'd like to ask more, please use your follow-up questions.
Kind Regards!