The Myth of Non-Drowsy Allergy Medication

There may not be such thing as non-drowsy antihistamines, one study shows. Even newer non-drowsy allergy medication examples like Clarinex, Zyrtec, and Xyzal cause significant daytime sleepiness, and worse.

non-drowsy allergy medication

Antihistamines got you dragging through the day? We have options outlined here, all backed by scientific studies.

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Do allergies hit you every fall and spring? If so, you perhaps have faced a no-win situation with traditional antihistamines, often described as “non-drowsy” allergy medications: Either you sneeze and itch your way through seasonal allergies, or you take antihistamines and live in a fog for a few days.

Antihistamines stop allergy symptoms by reducing or blocking histamines—chemicals the body releases in response to an allergic trigger. Histamines cause the stuffy nose; itchy, watery eyes; and rashy skin that are the hallmarks of an allergic reaction. While antihistamines can reduce these symptoms, they also can cause unpleasant side effects.

Allergy medication such as Benadryl and Chlor-Trimeton cause drowsiness, dry mouth, dizziness, blurred vision, nausea, and restlessness. Newer-generation antihistamines such as Clarinex and Zyrtec have been presented as having fewer antihistamine side effects. However, does Zyrtec make you sleepy? Or Clarinex? One study has indicated that non-drowsy allergy medicine doesn’t hold true. The best non-drowsy allergy medicine may be a natural approach.

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Comparing New and Old Antihistamines for Drowsiness and Mood

Results of the study, “Assessment of the Effects of Antihistamine Drugs on Mood, Sleep Quality, Sleepiness, and Dream Anxiety,” were published in the International Journal of Psychiatry in Clinical Practice[1] in 2014.

Ninety-two patients with chronic allergies were administered standard therapeutic doses of newer generation antihistamines, including cetirizine (Zyrtec), levocetirizine (Xyzal), and desloratadine (Clarinex), or older drugs, including hydroxyzine (Atarax) and pheniramine (Avil). The effects of these drugs on mood, daytime sleepiness, and some measures of sleep quality were assessed before and after one month of treatment. The researchers noted that few studies up to that point made comparisons between these medications.

The results showed that all of the drugs studied—not just the first–generation antihistamines—were associated with increased daytime sleepiness. Furthermore, patients receiving Zyrtec reported higher depression, anxiety, and fatigue scores than those who received the other newer-generation drugs.

How to Avoid Antihistamine Drowsy Symptoms and Treat Your Allergies Naturally

If allergies have taken hold, try bypassing the effects of antihistamine drowsy symptoms and opt instead for these natural treatments:

  • Reduce exposure to allergens by showering off pollens and irritants every night.
  • Use a neti pot with saline solution twice a day to rinse allergens from your sinuses.
  • Equip your home with HEPA (high-efficiency particulate air) filters.
  • Take other steps to allergy-proof your home, such as using dust-mite-proof pillow and mattress covers, keeping windows closed and using air conditioning during high-pollen days, keeping pets out of the bedroom, and vacuuming twice a week.
  • Take fish oil (1000 mg EPA/DHA per day), quercetin (500 mg twice a day), and n-acetyl-cysteine (400 mg twice a day) to boost your body’s ability to fight allergens.
  • Eat foods from the sulforaphane-rich Brassica family (e.g., broccoli, cauliflower, kale, Brussels sprouts, and cabbage) daily.[2]
  • Try taking an extract of the herb butterbur (50 mg three times a day). Comparisons of butterbur to prescription drugs such as fexofenadine (Allegra) and cetirizine (Zyrtec) have reported similar efficacy.[3]
  • Read more about natural allergy treatment using herbs and supplements here.

There’s no need to suffer antihistamine-induced drowsiness, depression, or anxiety day in and day out. The best antihistamine may be one of the many natural allergy treatments available. Give these options a try and you may not need those allergy medicines after all.

WHAT YOU SHOULD KNOW: ANTIHISTAMINE SIDE EFFECTS

Q: What are the most common side effects of antihistamines?

A: Although effective, antihistamines can cause side effects, depending on the type of medication you use. First-generation antihistamines—such as chlorpheniramine (Chlor-Trimeton) and diphenhydramine (Benadryl)—can cause drowsiness, dry mouth, dry eyes, headache, and abdominal pain. Second-generation antihistamines—such as cetirizine (Zyrtec), fexofenadine (Allegra) and loratadine (Claritin)—typically are less likely to cause these side effects.

Antihistamines tend to cause side effects more often in older adults, especially when used with other sedating medications or alcohol. Men with benign prostate enlargement (BPH) should avoid first-generation antihistamines, as the drugs can worsen urinary symptoms and potentially cause urinary retention.

Be aware that many cough and cold remedies contain antihistamines, and using them in combination with standalone antihistamines may increase their effects. Also, antihistamines are often combined with decongestants, which can increase blood pressure and cause other side effects. Ask your healthcare provider whether antihistamines are safe for you, based on your medical condition.


[1] Int J Psychiatry Clin Pract. 2014 Mar 27. [Epub ahead of print]
[2] Altern Med Rev 2012;17:6-18.
[3] BMJ. 2002 Jan 19;324(7330):144-6.


Originally published in 2016, this post is regularly updated.

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Comments
  • And what if your so-highly-touted “natural” remedies DON’T WORK? I wasted weeks of misery in allergy season trying them, and it was a big waste of money, too. CLARITIN costs less than your herbs, supplements, fish oil and snake oil. It works better, too. Not perfect, but definitely better.

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