Fexofenadine in Japan (the ingredient of Allegra): Allegra FX
Fexofenadine: how it is named on Japanese boxes, the 2 products in this database that contain it, how their doses compare with US labels, and the rules for bringing it into Japan and taking it home. On 3 October 2026, PMDA's search of OTC package inserts returned 39 products containing fexofenadine.
What it is called on Japanese boxes
How fexofenadine is written on Japanese boxes, with the official English name from the JAN database or the Japanese Pharmacopoeia.
| Official English name | Name on Japanese boxes | Listed in |
|---|---|---|
| Fexofenadine Hydrochloride | フェキソフェナジン塩酸塩 | JAN |
Fexofenadine in Japanese products
The amount of fexofenadine per dose and per day, as each package insert sets it.
On 3 October 2026, PMDA's search of OTC package inserts returned 39 products containing fexofenadine.
| Product | Amount | Most a day for adults | Class on the box |
|---|---|---|---|
| Allegra FX | 60 mg per dose of 1 tablet | 120 mg (2 doses a day) | 第2類医薬品 |
| Allegra FX Premium | 60 mg per dose of 2 tablets | 120 mg (2 doses a day) | 要指導医薬品 |
Most a day for adults, by the package insert (mg)
Each package insert sets its own dose. Follow the directions and dosage on the box you buy.
Japanese doses and US labels
US doses come from the OTC labels on DailyMed.
| Product | Where | Amount | Most a day for adults |
|---|---|---|---|
| Allegra FX | Japan, package insert | 60 mg per dose of 1 tablet | 120 mg (2 doses a day) |
| Allegra FX Premium | Japan, package insert | 60 mg per dose of 2 tablets | 120 mg (2 doses a day) |
| Allegra Allergy 24 Hour | US, OTC label | 180 mg per tablet | 180 mg (1 tablet in 24 hours) |
| Allegra Allergy 12 Hour | US, OTC label | 60 mg per tablet | 120 mg (2 tablets in 24 hours) |
Follow the directions and dosage exactly.That is the wording of the Japanese package inserts. The table lines up what each product's own directions say; it is not a guide to how much to take.
The directions on the US labels, as printed
Bringing it into Japan
Medicine with fexofenadine that you bring for your own use counts towards Japan's supply limits for medicine.
Taking it home
Frequently asked questions
Is fexofenadine sold over the counter in Japan?
On 3 October 2026, PMDA's search of OTC package inserts returned 39 products containing fexofenadine. In this database: Allegra FX, Allegra FX Premium.
How much Fexofenadine Hydrochloride is in Allegra FX?
60 mg per dose of 1 tablet, and at most 120 mg (2 doses a day) by its package insert. The package insert lists 120 mg in 2 tablets.
How does Allegra FX compare with Allegra Allergy 24 Hour?
Allegra FX: 60 mg per dose of 1 tablet, at most 120 mg (2 doses a day) (Japanese package insert). Allegra Allergy 24 Hour: 180 mg per tablet, at most 180 mg (1 tablet in 24 hours) (US label). Each product's directions apply only to that product.
Related items
PMDA package insert search (Japanese)
Sources for this page
- PMDA (Pharmaceuticals and Medical Devices Agency) OTC and guidance-required drug package insert search (一般用医薬品・要指導医薬品 添付文書等情報検索)checked October 3, 2026
- National Institute of Health Sciences Japanese Accepted Names for Pharmaceuticals (JAN) databasechecked October 3, 2026
- PMDA (Pharmaceuticals and Medical Devices Agency) アレグラFX: package insert (添付文書)checked October 3, 2026
- PMDA (Pharmaceuticals and Medical Devices Agency) アレグラFXプレミアム: package insert (添付文書)checked October 3, 2026
- DailyMed (US National Library of Medicine) Allegra: Allegra Allergy 24 Hour labelchecked October 3, 2026
- DailyMed (US National Library of Medicine) Allegra: Allegra Allergy 12 Hour labelchecked October 3, 2026
Compiled by Japan Japan !! · Updated October 3, 2026