How Long After Dayquil Can I Take Benadryl (2024)

FAQs

Can I take Benadryl after DayQuil? ›

Using dextromethorphan together with diphenhydrAMINE may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some people, especially the elderly, may also experience impairment in thinking, judgment, and motor coordination.

A person should wait 4-6 hours after taking DayQuil to drink alcohol safely. Consult a healthcare professional or the medication label for personalized instructions, as interactions vary based on individual factors. Refrain from taking in two substances that could have adverse effects on the body if combined.

No interactions were found between Vicks DayQuil Severe Cold & Flu and Zyrtec. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.

Combining these drugs can increase the risk of side effects such as drowsiness, dizziness, and impaired coordination. If your allergy symptoms are not well controlled with one antihistamine alone, it's important to seek medical advice rather than self-medicating with both drugs simultaneously.

DayQuil can treat cold and flu symptoms for around 4 hours. On the other hand, DayQuil Cough products treat cough symptoms for up to 8 hours.

Blood pressure medications, other antihistamines, antidepressants, sleeping pills, bowel disease medications, seizure medications, and cannabis products can have interactions when combined with Benadryl. Alcohol can increase the sedating effect of Benadryl, thus worsening drowsiness.

In general, it takes about 4 to 5 half-lives for a drug to be eliminated from your body. The ingredient with the longest half life is NyQuil Cold and Flu Nighttime Relief Liquid is the cough suppressant dextromethorphan with a half-life of 13 hours.

Does Dayquil Cold and Flu make you sleepy or keep you awake? It can potentially do either. Dayquil Cold and Flu contains dextromethorphan, which can rarely cause drowsiness. Dayquil Cold and Flu also contains phenylephrine, which can keep you awake at night.

Take this medication by mouth with or without food, usually every 4 to 6 hours as needed, or as directed by your doctor. Drink plenty of fluids when you use this medication unless otherwise directed by your doctor. The fluid will help loosen the mucus in your lungs.

Doubling up on certain medications can be dangerous. For example, some cold medications and allergy medications both contain pseudoephedrine. And too much pseudoephedrine can lead to tremors and heart palpitations. It can even be life-threatening in some cases.

What medications Cannot be taken with DayQuil? ›

Taking certain MAO inhibitors with this medication may cause a serious (possibly fatal) drug interaction. Avoid taking isocarboxazid, metaxalone, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, safinamide, selegiline, or tranylcypromine during treatment with this medication.

There are no known interactions between Claritin (loratidine) and DayQuil. It is considered safe to take both of these medications together to prevent allergies and for the treatment of your cough/cold symptoms.

dextromethorphan diphenhydrAMINE

Using dextromethorphan together with diphenhydrAMINE may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some people, especially the elderly, may also experience impairment in thinking, judgment, and motor coordination.

Oral Benadryl products are usually taken every 4 to 6 hours. Topical Benadryl products are typically used up to four times daily. Zyrtec is also available in many different forms, including: oral tablets.

Cetirizine is the most potent of the antihistamines having the strongest binding to histamine receptors but can have a mild sedative effect in some individuals, so it'd be best to take at nighttime.

Taking certain MAO inhibitors with this medication may cause a serious (possibly fatal) drug interaction. Avoid taking isocarboxazid, metaxalone, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, safinamide, selegiline, or tranylcypromine during treatment with this medication.

Many over-the-counter medications, including Flonase (fluticasone propionate) and Sudafed (pseudoephedrine), are safe to take with Allegra. But some combination cold products, such as Nyquil (acetaminophen / dextromethorphan / doxylamine), already contain an antihistamine and shouldn't be mixed with Allegra.

Benadryl has an average rating of 7.2 out of 10 from a total of 76 ratings on Drugs.com. 64% of reviewers reported a positive effect, while 19% reported a negative effect. Vicks Nyquil D Cold and Flu Nighttime Relief has an average rating of 7.8 out of 10 from a total of 4 ratings on Drugs.com.

It's best to ask a healthcare professional before combining OTC cold and allergy medications. Doubling up on certain medications can be dangerous. For example, some cold medications and allergy medications both contain pseudoephedrine. And too much pseudoephedrine can lead to tremors and heart palpitations.