Colgen Kowa Rhinitis Gel Capsule Alpha
コルゲンコーワ鼻炎ジェルカプセルα
Designated Class 2 — Use with special caution
Abuse-Prevention Designated · 指定濫用防止医薬品
Drug Type
Antihistamine and decongestant combination for rhinitis (gel capsule)
Form
Gel Capsules
Indication
Relief of symptoms caused by acute rhinitis, allergic rhinitis, or sinusitis: sneezing, runny nose, nasal congestion, watery eyes, sore throat, and head heaviness.
Active Ingredients (per capsule)
d-Chlorpheniramine maleate 2.0mg
Belladonna total alkaloids 0.2mg
dl-Methylephedrine hydrochloride 15.0mg
Phenylephrine hydrochloride 5.0mg
Anhydrous caffeine 40.0mg
Inactive Ingredients
Glyceryl stearate, polysorbate 60, sorbitan sesquioleate, medium-chain triglycerides, gelatin, glycerin, titanium oxide, soy lecithin
Instructions for Use
- ✓Take with water or lukewarm water. Take at least 4 hours apart. Can be taken with or without food.
| Age | Dose per use | Times per day |
|---|---|---|
| Adults (15 years and older) | 1 capsule | 3 times daily (at least 4 hours apart) |
| Under 15 years | Do not use | — |
- ✓To remove capsules: press firmly on the raised side of the PTP blister pack to break the foil backing and pop the capsule out. Do not swallow the capsule while still in the sheet — this can cause injury to the esophagus.
- ✓Stop use and consult a doctor, pharmacist, or registered salesperson, bringing this package insert with you, if symptoms do not improve after 5–6 days.
- ✕Do not operate vehicles or machinery after taking — may cause drowsiness, blurred vision, or abnormal sensitivity to light.
- ✕Do not use long-term or exceed the stated dose.
- ✕Do not use together with other rhinitis oral medicines, antihistamine-containing oral medicines (cold medicines, antitussives, motion sickness medicines, allergy medicines), or GI antispasmodics.
- ⚠Consult a doctor, pharmacist, or registered salesperson before use if you:
- (1) Are under medical treatment.
- (2) Are pregnant or possibly pregnant.
- (3) Are breastfeeding.
- (4) Are elderly.
- (5) Have had allergic reactions to medicines.
- (6) Have high fever or difficulty urinating.
- (7) Have been diagnosed with glaucoma, diabetes, thyroid disorder, heart disease, or high blood pressure.
- ✓Stop use and consult a doctor, pharmacist, or registered salesperson if any of the following occur:
- Skin: rash, redness, itching
- GI: nausea, vomiting, loss of appetite
- CNS: headache
- Urinary: difficulty urinating
- Other: facial flushing, abnormal sensitivity to light
- ✓Seek immediate medical attention if you experience any of the following serious side effects:
- Aplastic anemia: bruising, nosebleeds, gum bleeding, fever, pale skin or mucous membranes, fatigue, palpitations, shortness of breath, dizziness, or blood in urine
- Agranulocytosis: sudden high fever, chills, sore throat
- ✓Monitor and consult if persistent: dry mouth, drowsiness, constipation, blurred vision.
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
Sources & Documents
- Japanese product page
- Japanese PDF
- Last verified: May 27, 2026
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For informational purposes only. Always consult a doctor or pharmacist before taking any medication.