Seirogan Quick C
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Antidiarrheal (wood creosote)
Liquid capsules
Diarrhea, diarrhea due to indigestion, food poisoning, water poisoning, vomiting and diarrhea, loose bowels, and soft stools
Active Ingredients (per 2 capsules, the single dose for ages 11 and older)
Wood creosote 90 mg
Inactive Ingredients
Macrogol 400, polysorbate 80, succinylated gelatin, D-sorbitol, glycerin, caramel, medium-chain triglycerides
Instructions for Use
- βAlways take with water or lukewarm water, up to 3 times daily. Leave at least 4 hours between doses.
| Age | Dose per use | Times per day |
|---|---|---|
| 11 years and older | 2 capsules | Up to 3 times daily |
| 5 years to under 11 years | 1 capsule | Up to 3 times daily |
| Under 5 years | Do not use | β |
- βFollow the recommended dosage strictly.
- βChildren aged 5 and older should take under adult supervision, so that they take the right amount and the capsule does not get stuck in the throat.
- βTo take a capsule out, press the raised part of the blister sheet firmly with your fingertip to break the aluminum foil on the back. Swallowing a capsule still in its sheet by mistake can cause an accident, such as the sheet piercing the throat.
- β Consult a doctor, pharmacist, or registered salesperson before use if you:
- (1) Are under medical treatment.
- (2) Have diarrhea with a fever, bloody stools, or mucus in your stools that continues.
- (3) Are elderly (body functions such as the kidneys and liver are often weaker, so the medicine's effects may appear more strongly).
- βStop use immediately and consult a doctor, pharmacist, or registered salesperson β bringing this package insert with you β if any of the following appear after use, as they may be side effects:
- Gastrointestinal: Loss of appetite or stomach discomfort
- (Taking a large amount of the main ingredient, wood creosote, can cause stomach problems and reduce appetite.)
- βIf symptoms do not improve after 5β6 days, stop and consult a doctor, pharmacist, or registered salesperson, bringing this package insert with you.
- βStore in a cool place with low humidity, away from direct sunlight. Keep out of reach of children. Never transfer to another container (this can cause mistaken use or affect quality). After opening, fold the aluminum pouch along the fold line and always keep the capsules inside it with the desiccant. Do not use after the expiry date.
Additional Information
Quick C is a liquid capsule that releases wood creosote quickly β the same crude drug used in Seirogan. The package insert describes wood creosote as a clear liquid crude drug obtained from trees such as beech and pine, which adjusts the water balance in the intestines and normalizes bowel movement without stopping it.
Sources & Documents
- Japanese product page
- Japanese PDF
- English PDF
- Last verified: November 2, 2026
Related Medicines
For informational purposes only. Always consult a doctor or pharmacist before taking any medication.