When friend feel like you"re drowned in snot native the common cold or seasonal allergies, you most likely turn to medicines like Mucinex to dried it up. But taking meds choose antihistamines can lead come a brand-new problem: friend feel favor your mouth could twin as the Sahara Desert. 

Before you go pointing fingers at your pill cabinet, however, please take note: that isn"t Mucinex that dehydrates you. Nor is the Mucinex-D, Mucinex-DM or any kind of other decongestant containing the active ingredient guaifenesin. 



Guaifenesin and dehydration: The truth

Guaifenesin, which help loosen mucus and also ease chest congestion, go not cause dehydration, according to Matthew Jennings, Pharm.D. <1>

As it turns out, no medications for the typical cold actually dehydrate you—but some might make you feel thirsty, in require of eye drops, or otherwise dried out. 

"Typically when people have the overly dry effect," Jennings says, "it"s usually due to the fact that they"re acquisition too lot of a details medication."

So what among your usual cold treatments is the culprit? "If you"re feeling parched even after drinking water and downing a key of chicken noodle soup, begin by feather in the direction of anything containing antihistamines."

An antihistamine helps relax symptoms often associated with allergies, such together a runny nose or watery eyes. <2> The common cold causes comparable symptoms, therefore antihistamines have the right to be an reliable treatment. 

A usual side impact of antihistamines is dry mouth, for this reason you might feel thirsty without actually being dehydrated. 

But here"s where the plot thickens. There are drugs that save dehydrating ingredients, and you might be surprised to learn what lock are. 



What medications cause dehydration?


The medications that can cause true dehydration—that is, the lack of sufficient water in the body—are diuretics, Jennings says. 

Your doctor might prescribe diuretics come treat medical conditions like high blood pressure, love failure, and also edema. <3> part prescription diuretics include:


Bumetanide (Bumex)Chlorthalidone (Hygroton)Chlorothiazide (Diuril)Ethacrynate (Edecrin)Furosemide (Lasix)Hydrochlorothiazide HCTZ (Esidrix, Hydrodiuril, Microzide)Indapamide (Lozol)Methyclothiazide (Enduron)Metolazone (Mykroz, Zaroxolyn)Torsemide (Demadex) <4>

Talk come your medical professional or pharmacist if you"re not certain whether her prescription medicines can cause dehydration.

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Caffeine is likewise a diuretic the may contribute to dehydration. <5> Over-the-counter drugs that might contain caffeine include:





These drugs make you feel "dry," but don"t in reality dehydrate you

Then, over there are medications that have much more of a "drying" effect—namely, antihistamines. You might take these drugs for seasonal allergies, allergic reactions, the usual cold, or activity sickness. Typical side effects of antihistamines can encompass dry eye (causing blurred vision), dried mouth, urinary retention, and also constipation. Many over-the-counter cold medications are or incorporate antihistamines, together as:





Why execute some drugs dehydrate you?

There is a difference in between actual dehydrating medications and those that offer you a dried-out sensation, says Jennings. The goal of a diuretic is to eliminate excess liquid from the body, which can lower blood pressure and also reduce swelling in the extremities. Dehydration would certainly only happen if such a medication gotten rid of too much fluid from the body. Speak to your doctor if you"re concerned.

Medications the dry you out—antihistamines—cause that side effect due to the fact that they block a certain neurotransmitter in the brain, Jennings says. 

Many patients endure drying next effects since they are taking too plenty of antihistamines. "For example, if someone is acquisition a everyday antihistamine for allergy symptoms and currently suffering from cold/flu symptoms, they might (not always knowingly) take a multi-symptoms product that outcomes in a duplication the antihistamine," Jennings says.

Jennings offers the example of someone acquisition a day-to-day antihistamine to fight seasonal allergies that then comes down with the common cold. 

If they proceed to take their everyday allergy medication and also introduce a product like NyQuil for overnight cold relief, they space doubling increase on antihistamines and are an ext likely to experience too much dryness. <6> plenty of consumers aren"t aware of what"s in their medications or just how their medications may interact, Jennings adds.



Spray vs. Pills or Tablets: What dries you the end more? 


Pills or tablets have actually the volume to dry you the end all over, while nasal sprays will—you guessed it—dry out the i in your nose. 

"A sleep spray is walking to have a much more localized effect, while an oral medication has more systemic absorption together it start the bloodstream," Jennings says.

Common over-the-counter nasal sprays incorporate the decongestant Afrin (oxymetazoline) and also corticosteroids such as Flonase and also Nasonex. Every can cause nasal irritation due to dryness.



What to execute when medicine dehydrates girlfriend or dries you out

If you"re dehydrated, enduring from dried mouth, or simply plain thirsty, having actually a drink is this apparent answer. 

"Depending on the degree of dehydration, it might have an effect on electrolyte levels," Jennings says.

That means, if you"re simply feeling dry and thirsty, you have the right to drink water. However if you"re spend a medication the actually removes fluid native the body and dehydrates you (i.e., a diuretic), you have to look at replacing her electrolyte levels too. 

A product choose Hydrant, added to cold water, can lug your levels earlier to normal.

If you"re consistently feeling parched and you think medication might be to blame, speak to your physician or a pharmacist. They can speak to common side effects and any potential drug interactions that might occur. 

“It"s necessary for every patience to know precisely what they"re taking and also why, and what typical side impacts may occur as a result,” Jennings says. If girlfriend don"t, seek clinical advice native your medical professional or a pharmacist. Seek medical advice prior to stopping or beginning medications.

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