The two most effective over-the-counter options for seasonal allergies are nasal steroid sprays and oral antihistamines, and clinical guidelines recommend them as first-line treatments. Which one you reach for first depends on your specific symptoms. Here’s how to choose and combine them for the best relief.
Nasal Steroid Sprays for Congestion
If stuffiness and a runny nose are your main complaints, a nasal steroid spray is the single most effective thing you can buy without a prescription. These sprays (fluticasone, budesonide, mometasone) reduce inflammation inside your nasal passages and address the full range of nasal symptoms: congestion, sneezing, itching, and dripping. The American Academy of Otolaryngology’s clinical guidelines give nasal steroids their strongest recommendation for anyone whose allergy symptoms affect quality of life.
The catch is that nasal steroids don’t work instantly. They build up over several days, and you’ll get the most out of them if you start two weeks before your allergy season typically begins. If you already have symptoms, expect partial relief within a day or two and full effect after about a week of daily use. Consistency matters more than timing of day. One spray in each nostril daily is standard for children ages 4 to 11, while adults and teens 12 and older typically use two sprays per nostril daily.
A common mistake is aiming the spray toward the center of your nose. Point the nozzle slightly outward, toward the same-side ear, and breathe in gently. This keeps the medication on the nasal lining where it works rather than dripping down your throat.
Oral Antihistamines for Sneezing and Itching
When sneezing and itching are your primary problems, or when allergies hit your eyes and throat along with your nose, an oral antihistamine is your best starting point. The three main options available over the counter are cetirizine (Zyrtec), loratadine (Claritin), and fexofenadine (Allegra). All three are second-generation antihistamines, meaning they cause far less drowsiness than older options like diphenhydramine (Benadryl).
Cetirizine and fexofenadine reach near-full effect within about two and a half hours. Loratadine works on a similar timeline. One pill covers a full 24 hours for all three. The practical differences come down to side effects: cetirizine is slightly more likely to cause mild drowsiness than the other two, while fexofenadine is considered the least sedating. If one antihistamine doesn’t seem to work well for you after a week or so, switching to a different one is reasonable since people respond differently.
For children, cetirizine is approved from as young as 6 months (in liquid form), making it one of the go-to choices for young kids with allergies. Fluticasone nasal spray is approved starting at age 4.
Combining Treatments for Tougher Symptoms
You don’t have to pick just one. A nasal steroid spray and an oral antihistamine work through different mechanisms, and using both together often controls symptoms that neither handles alone. This combination is especially useful during peak pollen weeks when a single medication falls short. The nasal spray handles congestion and nasal inflammation while the antihistamine tackles sneezing, itching, and eye symptoms throughout your body.
Adding a nasal antihistamine spray (azelastine) to a nasal steroid is another step up that some people find helpful for stubborn congestion. Azelastine is available by prescription, though some combination products exist over the counter.
Eye Drops for Itchy, Watery Eyes
Oral antihistamines help with eye symptoms to some degree, but if itchy, red, or watery eyes are a major part of your allergy picture, antihistamine eye drops work faster and more directly. Ketotifen (Zaditor, Alaway) is the most widely available OTC option, used as one drop in each affected eye twice daily, spaced eight to twelve hours apart.
Olopatadine (Pataday) is another strong choice and comes in formulations that only need to be used once a day, which is more convenient. Once-daily dosing is also available with alcaftadine (Lastacaft). There’s little difference in effectiveness among these options, so convenience and price are reasonable ways to choose.
What to Avoid or Use Carefully
Nasal decongestant sprays like oxymetazoline (Afrin) are powerful at opening clogged nasal passages, but they carry a real risk. After about three consecutive days of use, they can cause rebound congestion, a condition where your nose becomes more blocked than it was before you started using the spray. This can create a cycle of dependence that’s difficult to break. Use these only for a day or two during the worst flare-ups, if at all.
Oral decongestants like pseudoephedrine (Sudafed) can help with stuffiness but raise blood pressure and heart rate. They’re not a good daily option for seasonal allergies and are best reserved for short-term relief.
First-generation antihistamines like diphenhydramine (Benadryl) and chlorpheniramine work, but they cause significant drowsiness, impair driving ability, and wear off in four to six hours. The newer antihistamines are a better choice for daily allergy management.
Montelukast: A Last Resort for Allergies
Montelukast (Singulair) is a prescription medication that blocks a different part of the allergic response. It’s approved for seasonal allergies in patients as young as 2. However, the FDA added its most serious warning label to this drug because of reports of mood changes, agitation, sleep disturbances, and other neuropsychiatric effects. The FDA now recommends that montelukast be reserved for allergy patients who haven’t responded to or can’t tolerate other allergy medications. If you’re already taking it and doing well, talk with your prescriber, but it shouldn’t be a first or second choice for typical seasonal symptoms.
Allergy Options During Pregnancy
Loratadine and cetirizine are the oral antihistamines generally considered safest during pregnancy. For moderate to severe symptoms, nasal steroid sprays like budesonide, fluticasone, and mometasone can be added at the lowest effective dose. The key is sticking with well-studied medications and using the minimum needed for relief.
Immunotherapy for Long-Term Relief
If you’ve tried the full range of over-the-counter options across multiple seasons and still struggle, immunotherapy is the only treatment that can change how your immune system responds to allergens rather than just masking symptoms. It comes in two forms: allergy shots given at a doctor’s office, and sublingual tablets or drops dissolved under the tongue at home.
Allergy shots are somewhat more effective than sublingual options, particularly for nasal symptoms and asthma, with lab tests more likely to show favorable immune changes. But sublingual tablets offer the obvious advantage of not requiring regular office visits. Either approach requires a commitment of three to five years of treatment to achieve lasting results. That’s a significant time and financial investment, but for people with severe seasonal allergies, the payoff can be years of reduced or eliminated symptoms after treatment ends.
A Practical Starting Strategy
If you’re unsure where to begin, start a nasal steroid spray two weeks before your symptoms usually kick in and take a once-daily antihistamine on days when sneezing or itching breaks through. Add antihistamine eye drops if your eyes are a problem. This layered approach covers most people’s symptoms without overcomplicating things. If a full season of that combination still leaves you miserable, that’s a good signal to discuss immunotherapy or prescription options with an allergist.