NyQuil With Gabapentin - Interaction Details
In our latest question and answer, our pharmacist discusses the combined use of gabapentin and NyQuil.
I take gabapentin for nerve pain. I have occasional trouble sleeping and want to know if it is safe to take NyQuil once in a while with it.
Apr 11, 2023- There is no direct interaction between gabapentin and NyQuil, but both medications can cause drowsiness and dizziness, and taking them together may increase these effects.
- You should avoid driving or operating machinery until you know how the combination affects you.
- If you take both medications at night, be aware of the potential for increased drowsiness and impaired coordination.
Answer
There is no known interaction between gabapentin and NyQuil. However, it's important to note that NyQuil contains several active ingredients, including doxylamine, which is a sedating antihistamine. Gabapentin is well known to have sedative side effects, especially at higher doses. Therefore, taking NyQuil with gabapentin can increase the risk of certain side effects, such as dizziness, drowsiness, and impaired coordination.
NyQuil Contains Doxylamine, A Sedating Antihistamine
There are several different 'NyQuil' products on the market. The two most popular ones are:
- NyQuil
- NyQuil Severe
These products contain:
- Acetaminophen (analgesic)
- Doxylamine (sedating antihistamine)
- Dextromethorphan (cough suppressant)
NyQuil Severe adds phenylephrine, a nasal decongestant.
Now, none of the ingredients in NyQuil products directly interact with gabapentin, but, as mentioned in the section above, the sedative effects of doxylamine could potentiate the sedative side effects of gabapentin.
Gabapentin Can Cause Sedation
Gabapentin is a medication that is primarily used to treat nerve pain, such as pain caused by shingles or diabetic neuropathy. It is also used to treat seizures in some cases.
Two of the more well-known side effects of gabapentin are sedation and dizziness.
The incidence rate of the side effects varies depending on the dose and duration of treatment, as well as other individual factors (such as age). If gabapentin is combined with other medications that can cause sedation and dizziness, the risk and severity of these side effects can be increased.
Combining NyQuil And Gabapentin
So, to reiterate, the concern with combining NyQuil and gabapentin is the risk of additive sedation and dizziness.
If you are taking both of these medications at night, the additive sedative effects may not be that much of a concern, but it is still important to be cautious and aware of the potential for increased drowsiness, dizziness, and impaired cognitive function.
It is important to follow the recommended dosages for both medications and to avoid activities that require mental alertness or physical coordination, such as driving or operating heavy machinery until you know how the combination affects you.
Final Words
Thanks for reaching out to us and I hope this answer provided what you were looking for!
Glossary — Terms in This Answer
- Gabapentin
- A medication primarily used to treat nerve pain and seizures that can cause sedation as a side effect.
- Doxylamine
- A sedating antihistamine found in NyQuil that causes drowsiness.
- Antihistamine
- A type of medication that reduces allergic reactions and can cause drowsiness.
- Dextromethorphan
- An active ingredient in NyQuil that suppresses cough.
- Phenylephrine
- A nasal decongestant ingredient found in NyQuil Severe that helps clear nasal passages.
- Analgesic
- A medication that relieves pain.
- Diabetic neuropathy
- Nerve pain and damage caused by diabetes.
- Potentiate
- To increase or enhance the effect of another medication or substance.
Dr. Brian Staiger, PharmD
Doctor of Pharmacy, board certified clinical pharmacist (BCPS), American Herbalist Guild, Medication Therapy Management certified
Brian Staiger, PharmD, BCPS, is a licensed pharmacist with more than 13 years of experience across retail pharmacy, clinical pharmacy, medication safety, pharmacy program development, and healthcare administration. He is the founder of HelloPharmacist.com, where he helps patients...
More answers from Brian →