The most effective option for moderate to severe allergies is a nasal spray that combines two active ingredients: an antihistamine and a corticosteroid. Updated 2024-2025 guidelines from the European Academy of Allergy and Clinical Immunology rank this combination above either ingredient alone. But your best choice depends on the type and severity of your symptoms, and several effective options are available over the counter.
Nasal Sprays: The Strongest OTC Option
Steroid nasal sprays (fluticasone, triamcinolone, budesonide) reduce inflammation in your nasal passages, tackling congestion, sneezing, and runny nose all at once. They’re more effective than oral antihistamine pills for nasal symptoms, but they take time to reach full strength. Most people notice improvement within a day or two, with peak results after one to two weeks of daily use. You spray once or twice daily into each nostril, and consistency matters more than timing.
Combination sprays pair a nasal steroid with a nasal antihistamine in a single bottle. Clinical guidelines now recommend this combination over a steroid spray alone, especially for people with more severe symptoms. If a plain steroid spray isn’t cutting it, stepping up to a combination product is the next move.
One important warning: decongestant nasal sprays (oxymetazoline, phenylephrine sprays) work differently and carry a strict time limit. After about three days of use, they can cause rebound congestion, a condition called rhinitis medicamentosa, where your nose becomes more blocked than it was before you started spraying. These are fine for a few days of acute misery but should never become a regular allergy tool.
Oral Antihistamines: Best for Itching and Sneezing
Oral antihistamines are what most people think of first. They work by blocking histamine, the chemical your immune system releases during an allergic reaction. The newer, second-generation options (cetirizine, loratadine, fexofenadine) cause far less drowsiness than older ones like diphenhydramine. They’re particularly good at controlling itchy eyes, sneezing, and a runny nose, though they do less for nasal congestion.
Cetirizine tends to act fastest, often within an hour, but is slightly more likely to cause mild drowsiness than loratadine or fexofenadine. Fexofenadine is the least sedating of the three. All are taken once daily, and they work best when used consistently throughout allergy season rather than only on bad days. If one brand doesn’t seem to help, switching to a different antihistamine is worth trying, since individual responses vary.
Eye Drops for Itchy, Watery Eyes
When allergies hit your eyes hardest, oral antihistamines may not be enough. Antihistamine eye drops deliver relief directly where you need it. The most widely available OTC ingredient, ketotifen, does double duty: it blocks histamine and stabilizes mast cells so they release less histamine in the first place. This treats existing symptoms while helping prevent new flare-ups.
You’ll typically need to apply drops twice a day, though some formulations last longer. If your eyes are red, itchy, tearing, or burning, targeted eye drops often outperform oral pills for those specific symptoms. Remove contact lenses before applying, and wait at least 10 minutes before putting them back in.
Saline Nasal Rinses
Flushing your nasal passages with a saltwater solution physically washes out pollen, dust, and mucus. It’s drug-free, inexpensive, and can be used alongside any medication. You can rinse once or twice daily during allergy season, and some people use it a few times a week year-round to prevent symptoms from building up.
The one safety rule that matters: never use tap water. Tap water can contain organisms that are harmless in your stomach but dangerous in your sinuses. Use distilled water, sterile water, or water you’ve boiled and cooled. Clean your rinse bottle or neti pot thoroughly between uses.
Natural Supplements
Quercetin, a plant compound found in onions, apples, and berries, has some clinical evidence behind it. In a randomized, placebo-controlled trial of 66 adults with pollen allergies, taking 200 mg of quercetin daily for four weeks significantly improved eye itching, sneezing, nasal discharge, and sleep quality compared to placebo. It’s not as powerful as pharmaceutical options, but it may be a reasonable add-on for people who want to minimize medication use.
Butterbur extract has also shown promise in older studies, though quality varies significantly between products. If you try supplements, look for standardized extracts from reputable brands, and be aware that they’re not regulated with the same rigor as medications.
Allergy Immunotherapy
If you’ve tried multiple medications and still struggle, immunotherapy is the only treatment that changes your immune system’s response rather than just masking symptoms. It works by exposing you to tiny, gradually increasing amounts of your allergen until your body stops overreacting.
Two forms are available. Traditional allergy shots are given at a doctor’s office, usually weekly at first, then monthly. Sublingual tablets dissolve under your tongue at home daily. Clinical data shows sublingual grass pollen tablets reduce allergy symptoms by about 20% and overall symptom-plus-medication burden by 23% after 20 weeks. Sublingual drops used daily for 18 months achieved a 26% reduction in combined symptom and medication scores. These numbers sound modest in percentage terms, but for people whose allergies significantly affect daily life, the improvement is often meaningful, and benefits can persist for years after treatment ends.
Immunotherapy requires a commitment of three to five years for lasting results. It’s not a quick fix, but it’s the closest thing to a long-term solution for allergies.
What to Know About Prescription Options
One prescription allergy pill worth knowing about is montelukast (Singulair), which blocks a different inflammatory pathway than antihistamines. However, in 2020 the FDA added its strongest safety warning to this drug due to reports of serious mood and behavior changes, including agitation, depression, and suicidal thoughts. The FDA now advises that montelukast should only be used for allergies when other treatments haven’t worked. Given how many effective OTC options exist, most people never need to consider it.
Allergy Treatment for Children
Some OTC allergy medications are approved for children as young as 6 months, but age limits vary widely between products. Cetirizine liquid is available for younger children, while many nasal steroid sprays are approved starting at age 2 or 4, depending on the brand. Always check the specific product’s label for its approved age range, and use the dosing tool included with liquid formulations rather than a kitchen spoon.
Putting It All Together
For mild symptoms, mainly sneezing and itchy eyes, a daily oral antihistamine is a reasonable starting point. If congestion is your main complaint, a steroid nasal spray will do more than a pill. For moderate to severe seasonal allergies, the combination of a nasal antihistamine plus a nasal steroid is what current guidelines favor. Adding saline rinses, antihistamine eye drops, or quercetin on top of that is safe and can help fill in any remaining gaps. If none of that is enough, immunotherapy offers a path toward reducing your allergic response itself rather than just treating symptoms season after season.