





Korak
A trusted laxative for chronic and habitual constipation that reaches the large intestine to promote bowel movements
For these people and situations
Product Overview
Korak is a laxative manufactured and sold by Taisho Pharmaceutical. Its active ingredient, bisacodyl, directly stimulates the large intestine to enhance peristaltic movement and relieve chronic and habitual constipation. Its proprietary five-layer coating technology is designed to prevent the active ingredient from dissolving in the stomach so that it works only in the large intestine. When taken on an empty stomach before bedtime, it takes effect the following morning (typically 6–11 hours after taking it). It is a Class 2 OTC Drug indicated for chronic and habitual constipation.
Product Features
Directly stimulates the large intestine to promote bowel movements
BisacodylThe active ingredient bisacodyl stimulates peristaltic movement in the large intestine, enhancing reduced bowel activity and supporting bowel movements. It is a stimulant formulation intended for chronic and habitual constipation.
Five-layer coating that does not dissolve in the stomach and works in the large intestine
Proprietary coating technologyThe special five-layer coating allows the active ingredient to reach the large intestine without dissolving in the stomach. Avoid taking it within one hour of consuming antacids or milk, as they may dissolve the coating.
Effective the following morning when taken before bedtime
Expected onset: 6–11 hoursTaking it before bedtime or several hours before the expected bowel movement produces an effect the following morning (typically 6–11 hours after taking it; individual results may vary). This timing is suitable for those who want to establish a regular morning bathroom routine.
Active ingredient
| Ingredient name | Amount contained | Classification |
|---|---|---|
| Bisacodyl | 10 mg (2 Tablets) | Stimulant laxative ingredient |
Indications
Dosage and Administration
| Age | Dose per administration | Number of doses per day |
|---|---|---|
| Adults (15 years and older) | 2 Tablets | Once daily |
| Under 15 years old | Do not take | — |
❓ Frequently Asked Questions
QWhen is the best time to take Korak?
ATo restore a regular bowel movement routine in the morning, we generally recommend taking it before bedtime. It has a five-layer coating that allows the active ingredient to work properly in the intestines without dissolving in the stomach, so taking it on an empty stomach is more effective.
QWhy should I not take this medicine with antacids or milk?
AThis medicine may dissolve in the stomach due to antacids or milk, preventing it from reaching the large intestine and producing the expected effect. Avoid taking it within one hour of consuming antacids or milk.
QIs it safe to take this medicine for an extended period?
AStimulant ingredients such as bisacodyl may become less effective as the body becomes accustomed to them with continued use. It is important to avoid taking this medicine for extended periods. If symptoms do not improve after taking it for one week, stop taking it and consult a doctor, pharmacist, or registered salesperson.
QHow should I choose between this and the other Korak products?
AKorak is a stimulant laxative containing only bisacodyl and is intended for chronic and habitual constipation. Korak Mg (containing magnesium oxide) is suitable for those seeking a laxative less likely to cause abdominal pain, while Korak II is suitable for those seeking a richer formulation containing bisacodyl and DSS. Using the appropriate ingredients according to your needs is also recommended.
- Strictly follow the specified dosage and administration.
- Do not take this medicine if you are under 15 years old.
- Take this medicine on an empty stomach whenever possible.
- Avoid taking this medicine within one hour of drinking an antacid (stomach medicine) or milk. Antacids and milk may cause this medicine to dissolve in the stomach, preventing it from producing the expected effect.
- Take the tablets whole without chewing or crushing them. Doing so may damage the special coating and prevent the medicine from working fully.
- Stimulant ingredients such as bisacodyl may become less effective as the body becomes accustomed to them with continued use. Avoid taking this medicine for extended periods.
- If symptoms do not improve after taking this medicine for one week, stop taking it and consult a doctor, pharmacist, or registered salesperson.
- Press the raised part of the PTP sheet firmly with your fingertip to break the aluminum foil on the back, then remove and take the tablet (if accidentally swallowed while still in the sheet, it may cause an unforeseen accident, such as puncturing the esophageal lining).
- Read the enclosed package insert carefully before use. If the product is not suitable for your symptoms or constitution, consult a doctor, pharmacist, or registered salesperson.
- Store in a cool, dry place away from direct sunlight.
- Store out of the reach of children.
- Do not transfer it to another container (this may lead to misuse or changes in quality).
- Do not use the product after its expiration date.




















































































