You should not take theraflu and Nyquil together because they both contain the same active ingredients, which are menthol and eucalyptus. Taking both of these together or even drinking them close in time can potentially lead to negative side effects like nausea, vomiting, dizziness, headache, red rashes on the skin and stomach pain.

The combination of medications can lead to serious side effects in some individuals. The risk is higher with drugs that have similar mechanisms of action. These combinations should be avoided whenever possible. Consult your doctor before taking any medications at the same time as another medication.

Theraflu side effects

One of the side effects of taking theraflu cough and cold medicine flu is possible heart palpitations. However, this is rare and usually goes away as your body adjusts to the medicine. If heart palpitations do not stop, notify your doctor. Some other side effects of taking theraflu cough and cold medicine flu include insomnia, nausea, vomiting, dizziness, headache, red rashes on the skin, and stomach pain. If you experience these side effects or other serious reactions after taking theraflu cough and cold medicine flu, call your doctor.

Nyquil side effects

Nyquil side effects can include dizziness, nausea, vomiting, drowsiness, headache, excessive sleepiness, and confusion. Nyquil can also lead to a condition called serotonin syndrome in rare cases. Symptoms of serotonin syndrome include high blood pressure, high body temperature, increased heart rate, shivering, sweating, and agitation.

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Nyquil can also cause a negative interaction when taken with certain medications. These include certain antidepressants, SSRIs, antipsychotics, medications for bipolar disorder, some medications for migraine headaches, MAOIs, and some herbal supplements. Talk with your doctor before taking any medication while you are taking Nyquil.

Warnings

While theraflu cough and cold medicine flu and Nyquil both have menthol in them, they are different strengths and therefore more should not be taken at one time. Also, it is important to note that the side effects are different for each medication, so the risk of negative reactions is greater if they are taken together.

Things to know before taking theraflu and nyquil together


There are a few things to know before taking theraflu cough and cold medicine flu and Nyquil together. First, there is a potential for the side effects to be more severe. If you are taking both medications and experience nausea, vomiting, dizziness, headache, or heart palpitations, you should stop taking one of the medications.

Because theraflu cough and cold medicine flu and Nyquil both have menthol in them, there is also a risk of negative interactions and side effects when taking both together.

Conclusion

Overall, theraflu cough and cold medicine flu and Nyquil should not be taken together. The combination of the ingredients in both medications can lead to negative side effects and cause the medications to be less effective. If you are experiencing symptoms of the common cold, such as a stuffy nose, scratchy throat, and sneezing, you may want to take some over-the-counter medication to make you feel better.

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One of the most common OTC medications you can take is the thera flu cough and cold medicine flu. This medication is often used to treat the symptoms of the common cold and flu. Before taking thera flu cough and cold medicine flu with Nyquil, it is important to understand how these medications work and the possible side effects you may experience. Talking to your doctor about the potential risks and benefits can help you decide if you should take these medications together or if there is a better treatment option for you.


David Warren
Author

David Warren is a pharmaceutical specialist that dispenses prescription medication on a daily basis. He received a Bachelor of Science degree in pharmacy from the University of Tennessee in 1991. With over 50 publications on medication-related and pharmacy topics, David has been able to share his experiences and knowledge with others. David with lots of experience and knowledge in medications that are utilized to treat a wide range of medical conditions. Before David dispenses a medication to a patient, he will go over the side effects, dosage recommendation and contraindications.