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Doctor insights on: Can I Take An Antihistamine And A Decongestant Together

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Dr. Maxime Cannesson
545 Doctors shared insights

Phenylephrine (Definition)

Phenylephrine hydrochloride is a decongestant which is a kind of antihistamine type drug (common ...Read more


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Can I take an antihistamine and a decongestant at the same time?

Can I take an antihistamine and a decongestant at the same time?

Yes: Many allergy medications already combine an antihistamine with a decongestant. These include Claritin (loratadine) d, Allegra d, zyrtec d, etc. The d stands for decongestant. ...Read more

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Is it safe to take an antihistamine and a decongestant everyday to help combat chronic sinus infections?

Is it safe to take an antihistamine and a decongestant everyday to help combat chronic sinus infections?

In general, yes: Improving nasal function will decrease the incidence and severity of sinusitis. If you are allergic and congested then a combination of an antihistamine decongestant can be of help. So can intranasal steroids and other measures. If you have recurrent infections an allergy evaluation and a good ENT evaluation can be of great benefit. ...Read more

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Please tell me, could a antihistamine and a decongestant be taken together?

Please tell me, could a antihistamine and a decongestant be taken together?

Yes: This combination is commercially available as an otc medicine -ask pharmacist. ...Read more

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Are there any antihistamines or decongestants you can take that will not raise your heart rate?

Are there any antihistamines or decongestants you can take that will not raise your heart rate?

Yes: All decongestants can potentially raise your heart rate as would be the first-generation antihistamines such as Benadryl (diphenhydramine) or hydroxyzine. The new-generation antihistamine such as fexofenadine or Loratadine is not expected to affect the heart rate. ...Read more

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What can I take for congested nose and ears with blocked eustachian tubes. Its been 6 weeks and I can't take decongestants n I've tried antihistamine?

See your doctor: In the interim, use saline nasal wash liberally, understand that you can't take decongestants for a reason or another, you might be prescribed something locally like intranasal steroid spray, also you might need an antibiotic, check with your doctor, goodluck ...Read more

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Dry eyes. Can't take decongestant or antihistamine for sinus infection. Will Sinoclear serve the purpose of unclogging sinus n post nasal drip?

Dry eyes. Can't take decongestant or antihistamine for sinus infection. Will Sinoclear serve the purpose of unclogging sinus n post nasal drip?

Decongestant?: Although antihistamine dries up the nose, decongestant does not. If the decongestant action is needed for just a few days, you may try Afrin nasal spray 2x daily for up to 5 days. A nasal steroid will likely work better if you have allergies. ...Read more

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My doctor told me not to take antihistamines before allergy test but I've been taking nasonex (mometasone) and Otrivin decongestant is that ok?

My doctor told me not to take antihistamines before allergy test but I've been taking nasonex (mometasone) and Otrivin decongestant is that ok?

Okay: A number of medications should be discontinued prior to allergy skin testing. Steroid nasal sprays like nasonex (mometasone) may be continued. Otrivine is a nasal decongestant which should only be used for temporary relief of symptoms may be continued. Escitalopram and inhalers and nebulizers may be continued. ...Read more

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Can like to know if both antihistamine and decongestant thicken mucus?

Can like to know if both antihistamine and decongestant thicken mucus?

Antihistamines: Do dry up secretions, decongestants constrict blood vessels so less blood flows into the area and congestion is relieved, drink plenty of water/fluids while on those drugs, avoid decongestants if having high blood pressure ...Read more

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I was prescribed some antihistamines and over-the-counter decongestants. Is it serious?

Need More Info: It is probably not serious, but you cannot determine the seriousness of a disease just by knowing the recommended medications. I do not usually give my patients decongestants for long term use due to side effects like insomnia, agitation, elevated blood pressure, and heart rate. They are ok for short term use or when you are sick for a few days. ...Read more

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Is it possible for too much decongestant/antihistamine to make my sinuses worse?

Yes but not likely: Some antihistamines may thicken the mucous. Oral decongestants don't cause much in the way of tolerance. It is more likely that your condition itself has gotten worse or become complicated by infection perhaps. ...Read more

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Is it okey to give an 8 years old fluctisone and antihistamine, decongestant at the same time?

For part of the year: In people (of all ages) with significant allergy, nasal steroid medications, such as fluticasone, are the most potent. They are quite safe for children. Non-sedating antihistamines are safe too. Oral decongestants are ok for short periods of time; nasal, no more than 5 days. The nose should be rinsed with saline before fluticasone. If your son needs meds more than 3 months/year, see an allergist. ...Read more

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What is the difference between nasal decongestant and antihistamine? When do you use each med? Which one is better?

What is the difference between nasal decongestant and antihistamine? When do you use each med? Which one is better?

Allergies: A nasal decongestant can be a nasal steroid, a nasal vasoconstrictor such as afrin and an oral decongestant such as pseudoephedrine. The nasal steroid is the safest long term option. The other 2 carry significant side effects. An antihistamine helps with the sneezing, runny nose and itching symptoms. ...Read more

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Is it okay to combine expectorants, antihistamines, & decongestants in one dose? Any drug interactions?

Yes: There is no problem with interactions but one should be concerned about the decongestant which may raise your blood pressure and cause insomnia. ...Read more

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Can decongestants and antihistamines be taken with antibiotics for your sinus infection?

Can decongestants and antihistamines be taken with antibiotics for your sinus infection?

Yes: Decongestants can be of some benefit but antihistamines in the face of infection can make sinus infections harder to treat by making your mucous thicker. ...Read more

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Do histamines (not antihistamine medications) make you drowsy? Antihistamines (no decongestants added) seem to make me more alert when allergies flare

Yes: Histamine is a substance released during an allergic attack and can cause drowsiness. Some of the older generation anti-histamine agents (like benedryl) can cause drowsiness because they can pass the "blood brain" barrier and cause a direct effect on thinking. In rare cases in adults, antihistamines can cause agitation. ...Read more

Dr. Paul Carter
642 Doctors shared insights

Antihistamine (Definition)

Sedating and non-sedating antihistamines prevent and treat allergic reactions, and are ...Read more


Dr. Thomas Josa
293 Doctors shared insights

Decongestant (Definition)

Decongestants are a kind of common ...Read more