How to Treat Japan Hay Fever 2026

The arrival of spring in Japan brings the beautiful cherry blossoms, but for many, it also signals the start of “Kafunsho” or hay fever season. This year, experts predict that pollen levels in certain regions may reach up to twice the amount recorded last year. Whether you are a long-term resident or a traveler visiting until late April, the sudden onset of a runny nose or itchy eyes can significantly impact your daily life. This article aims to help you identify these symptoms and provide professional guidance on the most effective over-the-counter (OTC) medications available in Japan. By understanding which local products correspond to familiar international brands, you can manage your allergies effectively and enjoy your stay with confidence and comfort.

Understanding Hay Fever (Kafunsho) in Japan

Hay fever in Japan is primarily caused by an allergic reaction to pollen from Japanese Cedar (Sugi) and Cypress (Hinoki). Even individuals who have never experienced allergies in their home countries may find themselves susceptible due to the exceptionally high concentration of pollen in the Japanese air. Furthermore, the symptoms typically manifest as sneezing, persistent nasal congestion, and watery eyes. In some cases, prolonged exposure can lead to skin irritation around the eyes and face. Therefore, it is essential to recognize these signs early. Medical professionals generally recommend a combination of oral antihistamines, medicated eye drops, and corticosteroid nasal sprays to mitigate these allergic responses effectively.

Choosing the Right Treatment for Your Lifestyle

Selecting the appropriate medication depends heavily on your daily schedule and how your body reacts to antihistamines. Some treatments offer 24-hour relief with a single dose, which is ideal for those who prefer convenience. Others are formulated to minimize drowsiness, making them suitable for individuals who need to drive or maintain high focus during work. Moreover, localized treatments such as nasal sprays and eye drops can provide targeted relief for specific symptoms without the systemic effects of oral pills. Understanding these distinctions ensures that you choose a product that fits your specific needs without compromising your daily activities.

Detailed Guide to Recommended Medications

Below are the most effective and commonly recommended OTC products available at Japanese pharmacies:

• Contac Rhinitis Z (コンタック鼻炎Z): This product contains 10mg of Cetirizine, the same active ingredient found in the world-famous Zyrtec. It is highly effective and only requires one dose per day. Because it may cause slight drowsiness in some users, taking it before bedtime is often recommended for 24-hour symptom control.
• Claritin EX (クラリチンEX): Widely recognized globally, this medication contains 10mg of Loratadine. Its primary advantage is that it is non-drowsy, allowing you to take it at any time of day without affecting your alertness.
• Allerbi (アレルビ): This is a cost-effective alternative containing 60mg of Fexofenadine, the same active ingredient as Allegra. It requires two doses per day (morning and evening) and is well-regarded for providing strong relief with minimal sedative effects.
• Flunase Nasal Spray (フルナーゼ点鼻): Known internationally as Flonase, this corticosteroid spray was previously available only by prescription in Japan. It is now available OTC and is highly effective at reducing inflammation directly in the nasal passages.
• Rohto Alguard Series (ロートアルガード): This famous series of eye drops caters to various needs. Whether you prefer a “Cool” sensation for immediate itch relief or a “Mild” formula for sensitive eyes, this range offers specialized care for pollen-induced conjunctivitis.

Summary and Proactive Care

Managing hay fever is most effective when treatment begins shortly before the pollen season peaks. While many international visitors may not be accustomed to such high pollen counts, being prepared is the key to a comfortable spring in Japan. If you plan to visit between February and April, we strongly advise you to monitor local pollen forecasts and start your medication early if symptoms appear.

At BLEZ Pharmacy, we stock these product and other essential medications. Whether you live or stay in Tokyo, Osaka, Kyoto, or anywhere else in Japan, you can contact us for consultation or to order products online. We offer fast shipping, with next-day delivery available in some areas. Our team is also able to coordinate online medical consultations with English-speaking doctors, ensuring you receive the care you need. Feel free to contact us via phone, LINE, X(Twitter), Instagram, or WeChat to learn more.