Korean Stomach Medicine: OTC Pharmacy Guide for Indigestion & Heartburn

## What's the best Korean stomach medicine at a pharmacy for indigestion? If your stomach is acting up after a heavy Korean BBQ or a bowl of super spicy jjigae, the fastest fix is a Korean stomach medicine from any local pharmacy, no prescription needed. For general indigestion and bloating, ask for a digestive enzyme like Festal (훼스탈) or Bearse (베아제). For heartburn and acid, reach for the antacid Gelfos M (겔포스엠). For a quick herbal settle-me-down, grab a bottle of Gas Whal Myung Su (까스활명수). And for traveler's diarrhea, Smecta (스멕타) is the go-to. All four are cheap, effective, and sitting on the shelf right now. I've lived in Seoul for a few years, and honestly my medicine drawer looks like a tiny pharmacy at this point. So this is the guide I wish someone had handed me on day one. ## What is Korean stomach medicine and how do I buy it? Korean stomach medicine is a broad category of OTC drugs sold at pharmacies (약국, yakguk) for digestion, heartburn, gas, and diarrhea, and almost all of it is available without a prescription. You just walk in, describe the symptom, and the pharmacist hands you the right box. The tricky part for foreigners isn't buying the Korean stomach medicine, it's knowing what to ask for. Korean pharmacists in bigger cities often speak some English, but it still helps to point at a symptom. Here's the cheat sheet I use. | Symptom | What to say (Korean) | Ask for this Korean stomach medicine | Type | |---|---|---|---| | Indigestion, feeling too full | 소화가 안 돼요 (sohwa-ga an dwae-yo) | Festal, Bearse | Digestive enzyme | | Heartburn, acid, sour stomach | 속이 쓰려요 (sogi sseuryeo-yo) | Gelfos M, Almagel | Antacid | | Upset stomach, general discomfort | 배가 아파요 (baega apa-yo) | Gas Whal Myung Su | Herbal liquid | | Diarrhea | 설사해요 (seolsa-hae-yo) | Smecta | Anti-diarrheal | | Motion sickness, nausea | 멀미해요 (meolmi-hae-yo) | Kimite patch | Scopolamine patch | Step by step, buying is dead simple. Find a pharmacy (look for the green 약 sign), tell or show the pharmacist your symptom, pay (usually 3,000 to 8,000 won), and go. Most pharmacies open around 9am and close by 8 or 9pm, and many close Sundays, so plan ahead on weekends. If your Korean and your English both fail, a translation app on your phone does the trick every time. ## Which Korean stomach medicine works for which symptom? Match the medicine to the symptom: enzymes for heaviness, antacids for burning, herbal liquids for a general upset, and Smecta for diarrhea. Grabbing the wrong one is the classic rookie mistake, so let me break down what each Korean stomach medicine actually does. Festal (훼스탈) and Bearse (베아제) are digestive enzyme tablets. These are what you want when you've eaten too much and everything feels stuck. Festal Plus packs a high dose of pancreatin, the enzyme that breaks down carbs, proteins, and fats, so it's great after a fatty or protein-heavy meal. Handok, the maker, even sells a stronger "Superzyme" version that adds an antacid and an anti-gas agent. Bearse, from Daewoong, works similarly and is officially indicated for dyspepsia, overeating, bloating, and gas. I keep both, but honestly I reach for Festal after Korean BBQ nine times out of ten. Gelfos M (겔포스엠) is the antacid I recommend most for heartburn. It comes in single-serving sachets of a slightly chalky gel, and it contains aluminum phosphate, magnesium hydroxide, and simethicone. That combo neutralizes stomach acid and knocks out gas at the same time. Adults take one sachet up to three times a day, between meals and at bedtime. If your pharmacy is out of Gelfos, Almagel is a similar liquid antacid. Gas Whal Myung Su (까스활명수) deserves its own paragraph because it's a Korean icon, a fizzy brown herbal liquid that's been sold since 1897. It's brewed from about 11 herbs including cinnamon, clove, ginger, and menthol, and it's aimed at indigestion, nausea, gastric distension, and that vague "my stomach is unhappy" feeling. It tastes medicinal and a little spicy-sweet. One little bottle, downed in one go, and you feel it working within minutes. Smecta (스멕타) is a powder you dissolve in water. It coats the gut lining and slows things down, which makes it my top pick for mild to moderate diarrhea, including the traveler's kind you get from new food and water. It's gentle enough that I've used it on rough mornings without feeling wiped out. ## What do foreigners really need to know about Korean stomach medicine? The two things nobody tells you: Korean pharmacies close early and often on Sundays, and some "digestive" liquids can actually irritate a sensitive stomach. These are the lessons I learned the slow way. First, timing. According to Korea's Ministry of Food and Drug Safety, most OTC drugs are sold at pharmacies, though a handful of "safe household medicines" are also sold at convenience stores. But the digestive stuff I've described here is pharmacy-only, and pharmacies keep short hours. I once had a brutal night of indigestion at 10pm on a Sunday and found every 약국 in my neighborhood shuttered. Now I keep Festal and Gelfos stocked at home, and if you take a Korea trip, I'd genuinely pack a small stash. For finding a late-night option, it helps to know how the Korean pharmacy system works in general. Second, a real caution. The fizzy herbal liquids like Gas Whal Myung Su and Gas Myung Su contain warming spices and carbonation, and Korean product guidance actually advises caution if you have gastritis or an ulcer. The first time I had a burning, acidic stomach I chugged Gas Whal Myung Su thinking it was a cure-all, and it made things worse. For acid and burning, an antacid like Gelfos is the correct tool. For heaviness and gas, the herbal liquid or enzymes are right. Getting that distinction correct is the single most useful thing in this whole guide. Third, motion sickness. If you're headed out on a ferry to Jeju or a windy mountain bus, the Kimite patch (기미테) is worth knowing. Made by Myungmoon Pharm, each patch holds 1.5mg of scopolamine, and you stick it on the dry skin behind one ear at least 2 to 4 hours before travel. One patch for adults, half for kids 8 to 15. It's drowsy-making for some people, so I test it before a big travel day. It's not exactly a Korean stomach medicine in the digestion sense, but nausea is nausea. Prices, for reference from my own receipts: a strip of Festal or Bearse runs roughly 3,000 to 6,000 won, a box of Gelfos sachets about 5,000 to 8,000 won, a bottle of Gas Whal Myung Su around 1,000 won, and Smecta sachets a few thousand won for a pack. This is far cheaper than a doctor's visit, and for everyday tummy trouble you rarely need one. That said, if you have blood in your stool, a high fever, severe pain, or symptoms lasting more than a few days, skip the pharmacy shelf and see a doctor. OTC Korean stomach medicine is for the ordinary stuff, not the scary stuff. If you also came down with a cold on your trip, my separate rundown on [Korean cold medicine for foreigners](https://beautydir.co/korean-cold-medicine-for-foreigners-otc-pharmacy-guide) covers that shelf, and for aches and fever there's the [Korean painkillers OTC guide](https://beautydir.co/korean-painkillers-otc-tylenol-gaebolin-brufen-guide) too. ## FAQ

What is the most common Korean stomach medicine for indigestion?

The most common Korean stomach medicine for indigestion is a digestive enzyme tablet, usually Festal (훼스탈) or Bearse (베아제). Both break down food and relieve that heavy, over-full feeling after a big meal. They're sold OTC at any pharmacy for a few thousand won, and you don't need a prescription. For a fast herbal option, Gas Whal Myung Su (까스활명수), a fizzy liquid, is also hugely popular.

What can I buy at a Korean pharmacy for heartburn or acid reflux?

For heartburn and acid, ask a Korean pharmacy for an antacid. Gelfos M (겔포스엠) is the most recommended, a sachet of gel containing aluminum phosphate, magnesium hydroxide, and simethicone that neutralizes acid and settles gas. Adults take one sachet up to three times a day between meals. Almagel is a similar liquid alternative. Avoid the fizzy herbal liquids for pure acid problems, since they can irritate a burning stomach.

Do I need a prescription to buy stomach medicine in Korea?

No, you do not need a prescription for common OTC stomach medicine in Korea. Digestive enzymes, antacids, herbal liquids, and anti-diarrheals like Smecta are all sold over the counter at pharmacies. Just describe your symptom to the pharmacist and pay. A prescription is only needed for stronger acid reducers or if a doctor diagnoses something more serious.

What Korean medicine helps with diarrhea or an upset stomach when traveling?

For traveler's diarrhea, Smecta (스멕타) is the go-to Korean stomach medicine. It's a powder you dissolve in water that coats the gut and slows things down gently, good for mild to moderate cases. For general nausea or motion sickness on ferries and buses, the Kimite patch (기미테) with scopolamine works well when applied behind the ear a few hours before travel.

What are the pharmacy hours in Korea for buying stomach medicine?

Most Korean pharmacies open around 9am and close by 8 to 9pm, and many are closed on Sundays and holidays. Because of this, it's smart to keep basic Korean stomach medicine like Festal and Gelfos at home. Larger cities have some late-night and 24-hour pharmacies near hospitals, but they're not everywhere, so don't count on finding one at midnight in a small neighborhood.

## References and sources - [Handok - Festal Superzyme complex digestive enzyme](https://www.handok.co.kr/en/board/en_pressView?idx=4232&listSize=9&page=1&type=media&lang=en) - [Kore Pharmacy - Bearse tablet (digestive enzyme with simethicone)](https://korepharm.com/products/bearse-tablet-100tbottle-korean-digestive-medicine) - [Korea Health Pages - Top 10 Korean Digestive Medicine and Pills](https://koreahealthpages.com/article/top-10-korean-digestive-medicine-and-pills.html) - [Dong-wha Pharmaceutical - Whal Myung Su product page](https://www.dong-wha.co.kr/english/product/content.asp?t_idx=415&b=20&s=20) - [Boryung - Gelfos M antacid (aluminum phosphate, magnesium hydroxide, simethicone)](https://pharm.boryung.co.kr/product/search_detail.do?SEQ=2) - [health.kr - Smecta Suspension drug information](https://health.kr/searchDrug/result_drug.asp?drug_cd=2019102100039) - [Korea Ministry of Food and Drug Safety - OTC drugs at retail outlets](https://www.mfds.go.kr/eng/brd/m_19/view.do?seq=70421) For more symptom-by-symptom pharmacy guides for foreigners in Korea, visit [BeautyDir Pharm](https://beautydir.co/).