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Doctor insights on: Decongestant Without Antihistamine

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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.

Dr. Maxime Cannesson
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Is it possible for me to take a decongestant and an antihistamine together?

Is it possible for me to take a decongestant and an antihistamine together?

Yes you can: You can take both medications at the same time providing that you follow the recommended otc doses.

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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.

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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

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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.

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

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.

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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.

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Would like to know if both antihistamine and decongestant thicken mucus. Have read some newer antihistamine (zyrtec) do not, and decongestants do not.

Dehydration: Thicker mucous is an expected response of an inflamed mucous membrane. The best way to thin the mucous is to drink lots of water.

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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.

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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.

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After a head cold for a week I'm left with a dry, unproductive cough. I've tried decongestants, antihistamines, expectorant, and nothing helps. Help!

After a head cold for a week I'm left with a dry, unproductive cough. I've tried decongestants, antihistamines, expectorant, and nothing helps. Help!

? bronchitis,: Reactive airways disease, or sinusitis due to the cold that you had, causing the dry cough, you need to see your doctor for assessment, possibly Rx medications are needed as bronchodilators and may be antibiotics, best wishes

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Why can not use antihistamines and decongestants in patient with thyroid disease? What is the machanism of action? What medicine can use to relief?

Decongestants may: Decongestants may complicate and exacerbate hyperthyroid states. In general I do not recommend oral decongestants to any age group as there is a higher risk of cardiovascular disease with decongestant use. Antihistamines alone may be used in thyroid disease in general.

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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.

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Will taking an antihistamine w/decongestant before sinus CT give false results?

Will taking an antihistamine w/decongestant before sinus CT give false results?

No: Decongestants reduce the swelling in the nose, but do not clear out the sinuses to the point of changing ct results. Other pathologies will be completely unaffected.

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I have fluid in my ear which is causing dizziness. Which is better a decongestant or an antihistamine?

Decongestant: A pseudoephedrine may help with fluid in the middle ear. Antihistamines like Meclizine have been used for vertigo but are thought to exert their effect through sedation rather than specifically treating the dizziness.

Dr. Paul Carter
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