For most people with seasonal or indoor allergies, a second-generation antihistamine like cetirizine (Zyrtec), loratadine (Claritin), or fexofenadine (Allegra) is the best starting point. These are available over the counter, work within an hour or two, and rarely cause drowsiness. But antihistamines are just one tool. Depending on how severe your symptoms are and where they hit hardest, you may get better relief by combining options or choosing a different type of treatment altogether.
Antihistamines: The Go-To Starting Point
Antihistamines block the chemical your body releases during an allergic reaction. Second-generation versions (cetirizine, loratadine, fexofenadine) last 24 hours per dose and cause far less drowsiness than older options like diphenhydramine (Benadryl). They work well for sneezing, itching, and a runny nose, though they’re less effective for congestion on their own.
Older antihistamines like diphenhydramine still have a place if you need fast relief and don’t mind feeling sleepy. Some people actually prefer taking them at bedtime when allergies are disrupting sleep. But for daytime use, second-generation options are the better choice.
Steroid Nasal Sprays for Stubborn Congestion
If your main complaint is a blocked, swollen nose, an over-the-counter steroid nasal spray is often more effective than an antihistamine pill. Options like fluticasone (Flonase) and budesonide (Rhinocort) reduce inflammation directly in the nasal passages. They tackle congestion, sneezing, and post-nasal drip all at once.
The catch is they take time. You may not feel the full benefit for a week or two of daily use, so these work best as a preventive measure during allergy season rather than a quick fix. Many allergists recommend pairing a steroid spray with a daily antihistamine for moderate to severe symptoms.
Decongestant Sprays: Powerful but Time-Limited
Topical decongestant sprays like oxymetazoline (Afrin) open up your nasal passages within minutes, which makes them tempting. But there’s a hard limit: three days. Using them beyond that can trigger a condition called rebound congestion, where your nose becomes more blocked than it was before you started. The spray itself starts causing the very problem you’re trying to treat, and some people end up dependent on it for months.
Use decongestant sprays only for the worst days, and switch to a steroid spray or oral antihistamine for ongoing relief.
Eye Drops for Itchy, Watery Eyes
When allergies hit your eyes more than your nose, antihistamine eye drops can help. Ketotifen (Zaditor, Alaway) is the most widely available OTC option and works as both an antihistamine and a mast cell stabilizer, meaning it blocks the allergic reaction at two stages. One drop in each affected eye, once or twice daily, is the typical approach.
Combination drops containing a decongestant alongside an antihistamine (like naphazoline/pheniramine products) can reduce redness too, but follow the same caution as nasal decongestant sprays and avoid prolonged daily use.
Saline Rinses: Simple and Underrated
Rinsing your nasal passages with salt water physically flushes out pollen, dust, and other allergens before they can trigger a reaction. You can use a neti pot, a squeeze bottle, or a prefilled saline system. The key safety rule: never use tap water. Use distilled water or water you’ve boiled for at least five minutes, then cooled to lukewarm.
To rinse, lean over a sink with your head tilted so one ear faces down. Pour or squeeze the saline into the upper nostril and let it drain from the lower one. It feels odd the first time, but many people find it significantly reduces their need for medication, especially when done before bed during high pollen days.
Allergy Medications for Children
Most second-generation antihistamines come in liquid and chewable forms for kids. Cetirizine, for example, is approved for allergy use starting at age 2. Children ages 2 to 5 typically take 2.5 mL of the liquid (half a teaspoon) once daily in the morning, while kids 6 to 11 take 5 mL (one teaspoon). Children 12 and older take the standard adult dose of 10 mg.
Loratadine and fexofenadine follow similar age-based dosing. Always check the product label, since formulations vary by brand. For children under 2, talk with a pediatrician before giving any allergy medication.
Options During Pregnancy
Loratadine and cetirizine are generally considered the safest oral antihistamines during pregnancy for mild symptoms. For moderate to severe congestion, steroid nasal sprays like budesonide, fluticasone, and mometasone can be added at the lowest dose that helps. Oral decongestants containing pseudoephedrine are typically avoided during the first trimester due to a possible link with birth defects, though they may be considered later in pregnancy for women without high blood pressure.
Immunotherapy for Long-Term Relief
If you’ve tried multiple medications and still feel miserable every allergy season, immunotherapy is the only treatment that can change how your immune system responds to allergens over time. It comes in two forms.
Traditional allergy shots are injections given in a doctor’s office, typically weekly at first, then monthly, over three to five years. They’re somewhat more effective than the alternative, with lab tests more likely to show favorable immune changes. The downside is the time commitment of regular office visits.
Sublingual immunotherapy (allergy drops or tablets) works differently. You place drops or a dissolving tablet under your tongue once daily at home. Most people notice improvement within three to four months, but the full course lasts three to four years. These are more convenient but currently only available for a limited number of allergens, primarily grass, ragweed, and dust mites.
Prescription Options and What to Know
When OTC treatments aren’t enough, a doctor may prescribe stronger antihistamine nasal sprays like azelastine, combination sprays, or oral medications. One prescription option sometimes used for allergic rhinitis is montelukast (Singulair), which blocks a different part of the allergic response. However, the FDA added its strongest safety warning to this drug due to reports of serious mood and behavior changes, including depression, agitation, hallucinations, and suicidal thoughts. Because of this, montelukast is now reserved for people who haven’t responded to or can’t tolerate other allergy treatments.
Putting It All Together
For mild symptoms, a daily second-generation antihistamine is usually enough. If congestion is your biggest problem, add a steroid nasal spray. Eye drops handle ocular symptoms that pills don’t fully reach. Saline rinses complement any of these by reducing your overall allergen load. And if you’ve been fighting the same battle every year for years, immunotherapy is worth discussing with an allergist, since it’s the only approach that can reduce your sensitivity to allergens rather than just masking symptoms.