Postnasal drip caused by allergies can be managed with OTC antihistamines and decongestants. Note that older antihistamines like Benadryl and Chlor-Trimeton can actually thicken mucus; instead, try Claritin, Alavert, Allegra, Zyrtec, Xyzal or Clarinex.
Thin postnasal drip secretions caused by allergies may be treated with antihistamines. Second-generation antihistamines such as Zyrtec and Claritin may offer better relief than older-type antihistamines such as promethazine (older antihistamines tend to thicken post-nasal secretions).
Antihistamines tend to dry out the lining of the nose and thicken mucus. If sinus sufferers also have allergies, physicians will prescribe antihistamines such as Claritin, Allergra, Zyrtec or Benadryl and/or allergy shots to control the inflammation that results from allergies.
Antihistamines reduce or block the chemicals that cause allergy symptoms. They can reduce swelling and congestion in the nasal passages and improve postnasal drip.
The most common causes of post-nasal drip are: viral infections in your nose and throat (such as a cold) hay fever — inflammation of the inside lining of your nose, also called 'allergic rhinitis' sinusitis —inflammation of the hollow spaces in the bones of your face (sinuses)
The older antihistamines like brompheniramine and chlorpheniramine have another effect: They inhibit the activity of the neurotransmitter acetylcholine, decreasing the secretion of mucus and widening airways.
As an antihistamine, Zyrtec can help with many allergy symptoms, while Sudafed primarily helps with nasal congestion. These medications can usually be taken together, as long as it's safe for you to take either medication alone.
Sandoz issued a voluntary recall of 1,023,430 units of Zyrtec (10 mg) capsules as a result of failed impurities and a specification being reported for impurity at the 21-month stability time point, according to an FDA Enforcement Report.
Antihistamines– which reduce or block chemicals called histamines and thus reduce allergy symptoms – can help with post-nasal drip that's caused by sinusitis and viral infections. Decongestants – which relieve swelling in your nasal passages – may also be helpful.
Some medications for treating allergies, like Zyrtec (cetirizine) and Allegra (fexofenadine) last 24 hours and don't need to be taken at night. But if you're combating allergy symptoms with a different antihistamine first thing in the morning, keep in mind that its effects will only last six to eight hours.
Try to leave 10 to 12 hours between doses. So, one first thing in the morning, and one before bedtime. For children between 2 to 5 years of age, the dose is 2.5mg, twice a day.
There are several good options among antihistamines to dry up a runny nose, including diphenhydramine (Benadryl, Nytol), brompheniramine (Dimetapp Cold, Robitussin Cold & Allergy, Allergy Elixir), and doxylamine (Alka-Seltzer Plus Night-Time Cold Medicine, NyQuil).
Possible causes of excess mucus can be food allergies, an acid reflux from the stomach, or an infection. The consistency of mucus in the throat also varies depending on what is going on in your body. Common causes of too much mucus in the throat include a cold or flu, acute bronchitis, sinusitis or pneumonia.
Mucolytics, such as guaifenesin, are chemical compounds that can help loosen and clear mucus from the nasal passages, sinuses, and lungs. They dissolve chemical bonds in mucus, making it thinner and helping it to drain more easily. Mucolytics are taken by mouth.
Many people with post-nasal drip swear that giving up or at least cutting back on dairy products like milk, yogurt, and cheese reduces mucus production and eases their symptoms.
Postnasal drip is generally more noticeable at night, especially when you are lying down to sleep. Possible complications include the blocking of the Eustachian tube, which joins the throat to the middle ear, leading to a painful ear infection.
If your post-nasal drip is a byproduct of a common cold and resolves on its own, it's not likely to be concerning. But if it persists for more than two weeks, consider being evaluated by a doctor who can help you feel more comfortable.
Decongestants like pseudoephedrine (Sudafed®) are useful for reducing congestion and postnasal drip, and saline nasal sprays can help keep your nasal passages moist. If allergies are responsible for your postnasal drip, non-drowsy antihistamines such as loratadine-pseudoephedrine (Claritin®) could help.
You should not use Zyrtec-D if you have narrow-angle glaucoma, severe high blood pressure (hypertension), severe coronary artery disease, if you are unable to urinate, or if you are allergic to hydroxyzine (Atarax, Vistaril). Do not use this medicine if you have taken an MAO inhibitor in the past 14 days.
Do not use with any other antihistamines applied to the skin (such as diphenhydramine cream, ointment, spray) because increased side effects may occur. Cetirizine is very similar to hydroxyzine and levocetirizine. Do not use these medications while using cetirizine.
Is it safe to take Zyrtec every day? Yep. "When taken in the recommended doses, antihistamines can be taken daily. This is especially true with Zyrtec, since it doesn't show decreasing effectiveness if used daily," says Sima Patel, MD, an allergist at New York Allergy & Sinus Centers.
All ZYRTEC® medicines start working at hour 1 on the first day you take it.