Claritin EX (クラリチンEX): ingredients, dose and warnings in English
Claritin EX (クラリチンEX) is sold in Japan as a class 2 medicine: the box reads 第2類医薬品. In 1 tablet: Loratadine 10 mg. The package insert sets the adult dose at 1 tablet, once a day, for ages 15 and over.
第2類医薬品 · Class 2
What is in Claritin EX
The package insert lists 1 active ingredient in 1 tablet. The middle column is how each one is written on the Japanese box.
| Ingredient | Name on the box | Amount |
|---|---|---|
| Loratadine | ロラタジン | 10 mg |
Additives, as written on the package insert (Japanese)
乳糖、トウモロコシデンプン、ステアリン酸マグネシウム
The maker publishes an English package insert for Claritin EX: Taisho Pharmaceutical: Claritin EX (English package insert). This page translates the current Japanese package insert on PMDA.
Source: PMDA (Pharmaceuticals and Medical Devices Agency) — クラリチンEX: package insert (添付文書) · Taisho Pharmaceutical — Claritin EX: English package insert
What the package insert lists it for
The approved wording of the Japanese package insert, translated. It is what the product is sold for, not advice on what to take.
- Relief of the following nasal allergy symptoms caused by pollen, house dust (indoor dust), etc.: runny nose, blocked nose, sneezing
The dose, as written on the package insert
Translated line by line from the directions and dosage (用法・用量) section.
- Loratadine per dose
- 10 mg
- Adult dose
- 1 tablet
- Doses a day
- 1
- Age
- 15 and over
- Adults (15 and over): take 1 tablet per dose, 1 time a day, after a meal.
- In addition, take it at the same time of day each time.
Notes on the directions
- (1) Follow the directions and dosage exactly as specified.
- (2) When using it for symptoms caused by seasonal allergic rhinitis due to pollen etc., once the pollen season has begun and symptoms start to appear, it is effective to take it from an early stage while the symptoms are mild.
- (3) If your symptoms do not improve after taking it for about 1 week, ask a doctor, pharmacist or registered salesperson for advice. Also, if you take it for more than 2 weeks, even if your symptoms have improved, ask a doctor, pharmacist or registered salesperson for advice.
- (4) How to take out the tablets
- Press the raised part of the sheet containing the tablet firmly with your fingertip to break the aluminium foil on the back, then remove the tablet and take it.
- (Accidentally swallowing it still in the sheet can lead to unexpected accidents, such as it piercing the mucous membrane of the oesophagus)
Do not
The package insert opens with what you must not do.
(If you do not follow these, your current symptoms may get worse, and side effects or accidents become more likely)
1. Do not take it if you are one of the following people
- (1) People who have had allergic symptoms caused by this medicine or its ingredients.
- (2) Children under 15.
2. Do not use any of the following medicines while taking this medicine.
- Other allergy medicines (including medicines for skin diseases and oral medicines for rhinitis), oral medicines containing antihistamines, etc. (cold medicines, cough medicines, motion sickness medicines, sleep aids and sedatives, etc.), Erythromycin, Cimetidine
3. Do not drink alcohol before or after taking it
4. Women who are breastfeeding: do not take this medicine, or avoid breastfeeding if you take it
Ask a doctor, pharmacist or registered salesperson
The package insert says to ask for advice in these cases.
1. If you are one of the following people, ask a doctor, pharmacist or registered salesperson for advice before taking it
- (1) People who are receiving treatment from a doctor.
- (2) People who have been diagnosed with the following.
- Liver disease, kidney disease, epilepsy
- (3) People who do not know whether it is allergic rhinitis or due to another cause such as a cold.
- (4) People who have been diagnosed with another allergic disease such as bronchial asthma or atopic dermatitis.
- (5) Women who are pregnant or think they may be pregnant.
- (6) Older people.
- (7) People who have had allergic symptoms caused by medicines etc.
2. If the following symptoms appear after taking it, they may be side effects, so stop taking it immediately and ask a doctor, pharmacist or registered salesperson for advice, taking this leaflet with you
Possible side effects, by part of the body
- Skin
- rash, itching, hives, the skin turning red, hair loss
- Respiratory system
- sore throat, a dry feeling in the nose
- Digestive system
- nausea, vomiting, abdominal pain, dry lips, mouth ulcers, gastritis
- Nervous system
- lethargy, dizziness, headache
- Circulatory system
- palpitations, rapid heartbeat
- Other
- dry eyes, ringing in the ears, hearing loss, flushing, oedema (face, hands and feet), taste disturbance, irregular periods, chest discomfort, abnormal uterine bleeding, chest pain, urinary retention
- In rare cases the following serious symptoms may occur. If they do, see a doctor immediately.
Rare but serious symptoms: name and signs
- Shock (anaphylaxis)
- right after taking it, itchy skin, hives, hoarseness, sneezing, itchy throat, difficulty breathing, palpitations, clouding of consciousness, etc. appear.
- Epilepsy
- (people who have a history of epileptic seizures)
- Stiffness and trembling of the muscles, impaired consciousness, no memory of the time before the seizure.
- Convulsions: contractions of the muscles appear in sudden attacks.
- Liver dysfunction: fever, itching, rash, jaundice (the skin and the whites of the eyes turn yellow), brown urine, tiredness all over the body, loss of appetite, etc. appear.
3. The following symptoms may appear after taking it, so if these symptoms continue or get worse, stop taking it and ask a doctor, pharmacist or registered salesperson for advice
- Dry mouth, constipation, diarrhoea, drowsiness
Who can sell it in Japan
The Claritin EX box carries the class 第2類医薬品, which decides who may sell it.
- On the box
- 第2類医薬品 (Class 2). The box reads 第2類医薬品.
- Who can sell it
- A pharmacist or a registered salesperson may sell it.
Source: e-Gov law search (Digital Agency, Japan) — Pharmaceutical and Medical Device Act (医薬品医療機器等法), current text · e-Gov law search (Digital Agency, Japan) — Enforcement Regulations of the Pharmaceutical and Medical Device Act (施行規則), current text
Taking it home
Frequently asked questions
How much Loratadine is in Claritin EX?
10 mg in a dose of 1 tablet, according to the Japanese package insert.
How much Claritin EX can an adult take in a day?
The package insert sets the adult dose at 1 tablet, once a day.
Can children take Claritin EX?
No. The package insert says it is not to be taken under 15.
Do I need a pharmacist to buy Claritin EX?
Claritin EX is a class 2 medicine (第2類医薬品). A pharmacist or a registered salesperson may sell it.
What is Claritin EX called in Japanese?
クラリチンEX. The Claritin EX box also carries the class 第2類医薬品.
Related items
Package insert in Japanese: PMDA
Sources for this page
- PMDA (Pharmaceuticals and Medical Devices Agency) クラリチンEX: package insert (添付文書)checked October 3, 2026
- Taisho Pharmaceutical Claritin EX: English package insertchecked October 3, 2026
- e-Gov law search (Digital Agency, Japan) Pharmaceutical and Medical Device Act (医薬品医療機器等法), current textchecked October 3, 2026
- e-Gov law search (Digital Agency, Japan) Enforcement Regulations of the Pharmaceutical and Medical Device Act (施行規則), current textchecked October 3, 2026
Compiled by Japan Japan !! · Updated October 3, 2026