# Ohta's Isan 太田胃散 140g

- Name: Ohta's Isan / 太田胃散 / 太田胃散 健胃散 140g罐装
- Brand: Ohta's Isan / 太田胃散
- Category: OTC Medicines & Health Goods
- Page: https://bestjapanbuy.com/en/p/ohta-isan-140g/
- Updated: 2026-10-23

As of 2026-10-23, the lowest online price on Kakaku.com is JP¥1,180 (incl. tax); of the 21 destinations we check, it is restricted in all 21.

A long-established Japanese powdered stomach medicine combining herbal ingredients and antacids. Class 2 OTC drug; the Japanese package insert lists overdrinking, heartburn, bloating, indigestion, and more. The can comes with a measuring spoon; for travel, consider the 48-packet version.

- Good for: People who want a household stomach remedy for overeating and overdrinking
- Not for: People who prefer tablets over powder (Ohta's Isan A tablets are also sold)

## Price in Japan

- Japan reference price incl. tax (Lowest online price, shipping not included): JP¥1,180
- Tax-free / after refund: JP¥1,073
- Flights: OK on the plane

## Taking it home (by destination)

| Destination | Result | Notes |
| --- | --- | --- |
| Mainland China | △ Restricted | Medicines: reasonable amounts for personal use only; keep the original packaging and leaflet |
| Hong Kong | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| Macao | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| Taiwan | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| Singapore | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| South Korea | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| United States | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| Thailand | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| Malaysia | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| Philippines | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| Vietnam | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| Indonesia | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| India | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| Australia | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| New Zealand | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| Canada | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| United Kingdom | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| Germany | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| France | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| Italy | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |
| Spain | △ Restricted | Medicines: rules on quantities and ingredients differ by country. Bring only a reasonable personal supply and keep the leaflet and original packaging. |

## Specs

| Item | Value |
| --- | --- |
| Brand | Ohta's Isan / 太田胃散 |
| Model | 太田胃散 140g |
| Type | Stomach / digestive |
| Japanese drug classification | Class 2 OTC drug (第2類医薬品) |
| Contains ephedrine-type / codeine-type ingredients (per ingredient list) | No |
| Volume / count | 140g |
| Main ingredients (per package) | 7 crude drugs incl. cinnamon bark and fennel + antacids incl. sodium bicarbonate, Biodiastase (digestive enzyme) |

## Reviews

TBD

## Frequently asked questions

### Can I take Ohta's Isan 太田胃散 140g home from Japan?

Of the 21 destinations we check, it is restricted in all 21.

### How much is the Ohta's Isan 太田胃散 140g in Japan tax-free?

As of 2026-10-23, the lowest online price on Kakaku.com is JP¥1,180 including tax. Tax-free or after the refund it is JP¥1,073. It costs less than JP¥5,000 (excl. tax) on its own, so you need to combine purchases at one store on one day to buy tax-free. From Nov 1, 2026, you pay the tax-included price in store and get the tax refunded when you leave Japan (a fee may apply).

### Where can I buy the Ohta's Isan 太田胃散 140g in Japan?

Sold at drugstores and pharmacies in Japan. The price we list is from Kakaku.com (2026-10-23); prices in store may differ.


## Sources

- Specs: [Ohta's Isan official site](https://ohta-isan.co.jp/product/medicine/ohtaisan/)
- Japan price: [Kakaku.com](https://kakaku.com/medicine-item/K0000543010/) (2026-10-23)

> Data from BestJapanBuy (bestjapanbuy.com). Please credit and link to the page when using it. Prices are for reference only; check in store.
> Translated with AI; the Chinese version is authoritative.