
Gentle on the stomach yet abundant — a plant-based formula that promotes natural-like bowel movements,
Recommended even for first-time users of laxatives.
Shin With One contains three plant-derived ingredients: "swelling dietary fiber," "Sennoside, an herbal medicine that pushes out the large intestine," and "dried extract of Designated Class 2 OTC Drug Cascara Sagrada that supports intestinal function." It is gentle on the stomach and promotes abundant bowel movements.


When stool remains in the intestines for a long time, it ferments and harmful bacteria increase, producing harmful gases. These gases are absorbed through the intestinal wall and circulate in the body, causing rough skin and bad breath. Also, when hard stool is expelled, it can cause anal fissures or congestion of veins, leading to hemorrhoids. With Shin With One, promote soft bowel movements and improve constipation and related symptoms.
| Ingredient Name | Content | Role and Action |
|---|---|---|
| Plantago Ovata Seed Husk Powder | 3,000 mg | Water-soluble dietary fiber. Swells in the intestines to increase stool bulk and promote peristalsis. |
| Sennoside (As Sennosides A and B, 32.58mg) |
83.53 mg | Herbal medicine derived from Senna. Selectively stimulates only the large intestine to promote peristalsis. |
| Cascara sagrada dry extract (Equivalent to 300mg of Designated Class 2 OTC Drug Cascara Sagrada) |
53.6 mg | Derived from the bark of Rhamnaceae plants. A supportive herbal medicine that aids intestinal function. |
| Age | Single dose | Timing of intake |
|---|---|---|
| Adults (15 years and older) | 3/4 to 1 packet | 1 to 3 times a day, after meals |
| 11 years old to under 15 years old | 1/2 to 2/3 packets | 1 to 3 times a day, after meals |
| 3 years old to under 11 years old | 1/4 to 1/3 packets | 1 to 3 times a day, after meals |
| Under 3 years old | Do not take if | |
Always start with the minimum amount for the first time, and gradually increase or decrease the dose while monitoring bowel movements.
If a child is taking this, always do so under the guidance and supervision of a guardian.
Cascara sagrada dry extract
Sanqilai extract (skin care)
Spores-containing lactic acid bacteria that reach the intestines
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What are the differences from other With One series products?New With One is a "basic" formula containing Cascara sagrada dry extract, ideal for first-time users of laxatives. For those concerned about skin roughness due to constipation, "New With One α (Peach Flavor)" is recommended, and for those concerned about abdominal bloating, "With One L (Yogurt Flavor)" is recommended.
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What is Cascara sagrada?An herbal ingredient extracted from the bark of the North American Rhamnaceae plant (Cascara sagrada). Combined with dietary fiber and sennosides, it supports intestinal function and promotes gentle bowel movements.
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Why is it necessary to drink plenty of water?The main ingredient, Plantago ovata seed husk powder, is a dietary fiber that absorbs water and swells. Taking it with a full glass (about 180mL) of water allows it to swell properly in the intestines and be effective. Insufficient water intake may cause it to swell in the esophagus or stomach.
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From what age can it be used?Can be taken from age 3 and up. When children take it, always do so under the guidance and supervision of a guardian. Do not give to children under 3 years old.
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Will it cause dependence?Because it is a gentle formula based on plant ingredients, it is less likely to cause dependence compared to strong stimulant laxatives. However, if used for a long time, please consult a pharmacist or registered seller.
- This is a Designated Class 2 OTC Drug. Please consult a pharmacist or registered seller before use.
- Do not give to infants under 3 years old.
- Always take with a full glass (about 180mL) of water or lukewarm water. Taking it without enough liquid is dangerous.
- If you are breastfeeding, either do not take this medicine or avoid breastfeeding while taking it.
- If you are pregnant or may be pregnant, consult a doctor or pharmacist before use.
- If symptoms do not improve or worsen, stop taking the medicine and consult a doctor or pharmacist.
- Store in a cool, dry place away from direct sunlight and out of reach of children.
- Do not take products past their expiration date.
The plant-based laxative "With One" is a brand born with the concept of addressing women's true feelings and concerns for natural-like bowel movements.
- 1955 Founded as Zeria Yakusou Research Institute in Chuo-ku, Tokyo.
- 1970 Changed company name to Zeria Pharmaceutical Co., Ltd.
- November 1987 Launched the plant-based laxative "With One" — Japan's first full-fledged plant-based laxative.
- 2000 Listed on the First Section of the Tokyo Stock Exchange (now Prime Market).
- January 2012 Released the improved formula version "New With One." Added Cascara sagrada dry extract to further enhance support.
- Since 2012 Sequentially launched "New With One α (Peach Flavor)" and "With One L (Yogurt Flavor)," developing into a series that can be selected according to your concerns.
- ~Present Continues to be supported by a wide range of generations as a leading brand of Japanese plant-based laxatives.

















































































