Stona EX Tablets
ストナEX錠
Designated Class 2 — Use with special caution
Abuse-Prevention Designated · 指定濫用防止医薬品
Drug Type
Multi-symptom cold relief — 7 active ingredients plus 2 herbal extracts (tablet)
Form
Tablets 24 tablets
Indication
Relief of cold symptoms: runny nose, nasal congestion, sneezing, sore throat, cough, phlegm, chills (fever-induced), fever, headache, joint pain, and muscle pain
Active Ingredients (per 6 tablets (daily dose))
Ibuprofen 600 mg
Diphenylpyraline hydrochloride 4 mg
Dihydrocodeine phosphate 24 mg
dl-Methylephedrine hydrochloride 60 mg
L-Carbocisteine 750 mg
Anhydrous caffeine 75 mg
Riboflavin (Vitamin B2) 12 mg
Wild cherry bark extract 40 mg
Platycodon root dry extract 222.2 mg
Inactive Ingredients
Anhydrous silicic acid, calcium hydrogen phosphate, hydroxypropyl cellulose, croscarmellose sodium, magnesium stearate, hypromellose, titanium oxide, polyvinyl alcohol/acrylic acid/methyl methacrylate copolymer, polyoxyethylene polyoxypropylene glycol, cellulose, aluminum silicate, talc, ferric oxide, carnauba wax
Instructions for Use
- ✓Take within 30 minutes after meals with water or lukewarm water.
| Age | Dose per use | Times per day |
|---|---|---|
| Adults (15 years and older) | 2 tablets | 3 times a day |
| Under 15 years | Do not use | — |
- ✓When removing tablets from the PTP sheet, press the convex side firmly to break the foil on the back. Do not swallow the PTP sheet, as it may puncture the esophageal lining and cause serious injury.
- ✕Do not use this product if:
- (1) You have ever had an allergic reaction to this product or any of its ingredients.
- (2) You have ever experienced asthma after taking this product, another cold medicine, or a pain reliever/fever reducer.
- (3) The person is under 15 years of age.
- (4) You are within 12 weeks of your expected delivery date.
- (5) You are currently being treated for gastric or duodenal ulcer, blood disorders, liver disease, kidney disease, heart disease, or high blood pressure, or are taking zidovudine (e.g., Retrovir).
- ✕Do not use any of the following medicines while taking this product: other cold medicines, pain relievers/fever reducers, sedatives, cough and phlegm medicines, or oral medicines containing antihistamines (such as medicines for rhinitis, motion sickness, or allergies).
- ✕Do not drive or operate machinery after taking this product (drowsiness may occur).
- ✕Do not breastfeed while taking this product, or stop breastfeeding if you take it.
- ✕Do not drink alcohol before or after taking this product.
- ✕Do not take for more than 5 days.
- ✕Do not exceed the recommended dose.
- ✓Seek immediate medical attention if any of the following serious symptoms appear:
- • Shock (anaphylaxis): Itching of skin, hives, hoarseness, sneezing, itchy throat, difficulty breathing, palpitations, or clouding of consciousness immediately after use.
- • Stevens-Johnson syndrome / toxic epidermal necrolysis: High fever, redness of eyes, eye discharge, sores on lips, sore throat, widespread rash or redness on skin that persists or rapidly worsens.
- • Gastrointestinal disorder: Black stools, vomiting blood, bloody stool, or mucous/bloody stool.
- • Liver disorder: Fever, itching, rash, jaundice (yellowing of the skin or whites of the eyes), dark urine, general fatigue, or loss of appetite.
- • Kidney disorder: Fever, rash, decreased urine output, swelling throughout the body, general fatigue, joint pain, or diarrhea.
- • Aseptic meningitis: Severe headache with stiff neck, fever, nausea, or vomiting. (Reported more frequently in patients with SLE or MCTD.)
- • Myocardial infarction: Squeezing chest pain, difficulty breathing, or cold sweats.
- • Cerebrovascular disorder: Decreased or loss of consciousness, weakness or inability to move one side of the body, headache, vomiting, dizziness, or difficulty speaking.
- • Interstitial pneumonia: Shortness of breath with climbing stairs or slight exertion, dry cough, fever, or other symptoms that appear suddenly or persist.
- • Asthma: Wheezing or whistling breath sounds, or difficulty breathing.
- • Aplastic anemia: Bruising, nosebleed, bleeding gums, fever, pale skin or mucous membranes, fatigue, palpitations, shortness of breath, feeling faint, or blood in urine.
- • Agranulocytosis: Sudden high fever, chills, or sore throat.
- • Respiratory suppression: Shortness of breath or difficulty breathing.
- ⚠Consult a doctor, pharmacist, or registered salesperson before use if you:
- (1) Are under the care of a physician or dentist.
- (2) Are pregnant or may be pregnant.
- (3) Are elderly.
- (4) Have ever had an allergic reaction to a medicine.
- (5) Have any of the following symptoms: high fever, or difficulty urinating.
- (6) Have been diagnosed with or have a history of: gastric or duodenal ulcer, blood disorders, liver disease, kidney disease, heart disease, high blood pressure, bronchial asthma, systemic lupus erythematosus (SLE), mixed connective tissue disease (MCTD), ulcerative colitis, Crohn's disease, thyroid disease, diabetes, glaucoma, respiratory dysfunction, obstructive sleep apnea syndrome, or obesity.
- ✓Stop use and consult a doctor, pharmacist, or registered salesperson — bringing this package insert with you — if any of the following symptoms appear after taking this product, as they may be side effects:
- Skin: Rash, redness, itching, or bruising
- Gastrointestinal: Nausea/vomiting, loss of appetite, stomach discomfort, stomach pain, mouth sores, heartburn, bloating, gastrointestinal bleeding, abdominal pain, diarrhea, or bloody stool
- Nervous system: Dizziness, insomnia, or depressed mood
- Cardiovascular: Palpitations
- Respiratory: Shortness of breath
- Urinary: Difficulty urinating
- Other: Blurred vision, ringing in the ears, swelling, nosebleed, bleeding gums, difficulty stopping bleeding, bleeding, back pain, excessive drop in body temperature, or general fatigue
- ✓Stop use and consult a doctor, pharmacist, or registered salesperson if the following symptoms persist or worsen: constipation, dry mouth, or drowsiness.
- ✓Stop use and consult a doctor, pharmacist, or registered salesperson — bringing this package insert with you — if symptoms do not improve after 5 to 6 doses, especially if fever persists for 3 or more days or recurs.
Abuse-Prevention Designated Medicine 指定濫用防止医薬品
- Purchase is limited to 1 unit per person per transaction, both in-store and online
- A pharmacist or registered salesperson must confirm appropriate use before the sale is completed
- Additional restrictions apply for buyers under 18
- Do not exceed the prescribed dose — taking more than directed may cause serious adverse effects
Additional Information
Urine may turn yellow due to the riboflavin (Vitamin B2) content.
Sources & Documents
- Japanese product page
- English PDF
- Japanese PDF
- Last verified: May 25, 2026
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For informational purposes only. Always consult a doctor or pharmacist before taking any medication.