Taking NyQuil With Medrol (Methylprednisolone)
In our latest question and answer, our pharmacist discusses whether or not it is safe to combine NyQuil with Medrol.

Question
Can I take 4mg Methylprednisolone with Nyquil Cold and flu? I have been prescribed the steroid for a virus but ended up with a nasty cough.

Answered by Dr. Brian Staiger, PharmD
Medical Content Reviewed By HelloPharmacist
Staff
Last updated Apr 18, 2025
Key points
- There is no known drug interaction between NyQuil and Medrol (methylprednisolone).
Answer
Thanks for reaching out! Medrol (methylprednisolone) can safely be taken with NyQuil Cold and Flu as there are no known interactions between them.
In fact, the sedative effects of NyQuil may help to offset some of the most commonly reported side effects of Medrol, such as anxiety, insomnia, and restlessness.
It is important to remember that NyQuil is a multi-ingredient product and therefore, you need to take them all into account as it concerns potential drug interactions.
NyQuil Cold and Flu contains:
- Acetaminophen
- Doxylamine
- Dextromethorphan
- Phenylephrine (only in NyQuil Severe)
None of the ingredients in NyQuil, or NyQuil Severe, interact with Medrol.
About NyQuil
NyQuil is a combination ingredient cold/flu medication.
It contains:
- Acetaminophen, a pain reliever and fever reducer. Acetaminophen is the active ingredient in Tylenol.
- Doxylamine, a sedating antihistamine, similar to Benadryl (diphenhydramine).
- Dextromethorphan, a cough suppressant.
- Phenylephrine, a nasal decongestant.
Several other varieties of NyQuil are available as well, all of which can be seen on the manufacturer website.
NyQuil begins working about 15 to 30 minutes after taking a dose, and has a typical duration of action around 4-6 hours.
About Medrol
Medrol (methylprednisolone) is a corticosteroid, commonly used to treat inflammation of the skin, joints and lungs.
It is used for a wide variety of indications, including:
- Asthma exacerbation
- Allergies, including contact dermatitis reaction (e.g. poison ivy)
- Arthritis
Medrol is most commonly prescribed in a Dosepak, which follows a 21-tablet dose titration schedule:
- Day One: 2 tablets (8 mg) before breakfast, 1 tablet (4 mg) after lunch, 1 tablet (4 mg) after supper, and 2 tablets (8 mg) at bedtime.
- Day Two: 1 tablet (4 mg) before breakfast. 1 tablet (4 mg) after lunch, 1 tablet (4 mg) after supper, and 2 tablets (8 mg) at bedtime.
- Day Three: tablet (4 mg) before breakfast, 1 tablet (4 mg) after lunch, 1 tablet (4 mg) after supper, and 1 tablet (4 mg) at bedtime.
- Day Four: 1 tablet (4 mg) before breakfast, 1 tablet (4 mg) after lunch, and 1 tablet (4 mg) at bedtime.
- Day Five: 5th day: 1 tablet (4 mg) before breakfast, and 1 tablet (4 mg) at bedtime.
- Day Six: 6th day: 1 tablet (4 mg) before breakfast.
Medrol should be taken with food or meals to minimize nausea, indigestion and stomach irritation.
Final Words
Thanks again for reaching out to us!
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Dr. Brian Staiger, PharmD
- 12427 views