โฑ๏ธ Endoscopy Center · Apgujeong Hana Clinic
Gastroscopy Preparation Seoul
Clear English preparation guidance for upper endoscopy in Gangnam—covering fasting, water, prescription medicines, diabetes, GLP-1 injections, sedation transport and your procedure-day checklist.
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English fasting instructions
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Individual medicine review
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Same-day guidance when eligible
Gastroscopy Preparation Passport
Your clinic-confirmed countdown to endoscopy
Ready
to scope
to scope
BOOKING
Confirm procedure, sedation and medicines
Tell the clinic about diabetes, blood thinners, GLP-1 treatment, pregnancy and major medical conditions.
T−8
TO 6H
TO 6H
Stop solid food at the instructed time
Apgujeong Hana Clinic commonly advises no food for approximately six to eight hours before gastroscopy.
T−2H
Stop water and clear liquids
The clinic commonly requires no water during the final two hours before the procedure.
ARRIVE
Check in fasting with your medicine list
Bring relevant records and confirm safe transport home when sedation is planned.
FOOD
Stopped at the confirmed time
MEDICINES
Reviewed before changes
TRANSPORT
Arranged after sedation
Your appointment message is the final instruction. Fasting may be extended or adjusted for delayed stomach emptying, digestive symptoms, diabetes, GLP-1 medicines or another medical concern.
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Empty Stomach Required
Fasting improves visibility and reduces the risk of stomach contents entering the airway.
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Medicines Reviewed
Most medicines may continue, but selected treatments need individual instructions.
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GLP-1 Disclosure
Report semaglutide, tirzepatide, liraglutide and any digestive symptoms.
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Sedation Transport
Patients receiving sedation must not drive themselves home.
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Board-Certified Gastroenterologist
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Certified Endoscopy Sub-Specialist
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English Preparation Instructions
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Apgujeong · Gangnam
Why Preparation Matters
A properly empty stomach supports a clearer and safer examination.
Gastroscopy uses a thin flexible camera to examine the esophagus, stomach and duodenum. Food or liquid remaining in the stomach can obscure the lining and make complete examination more difficult.
Stomach contents may also move upward toward the airway during gagging, sedation or a change in consciousness. Following the fasting schedule helps reduce this aspiration risk.
Preparation is not identical for every patient. The final schedule depends on your appointment time, sedation plan, medicines, symptoms and conditions that may delay stomach emptying.
Clearer Visibility
An empty stomach helps the endoscopist inspect the lining for inflammation, ulcers, bleeding and abnormal tissue.
Lower Aspiration Risk
Appropriate fasting reduces the amount of stomach content that could enter the airway.
Better Biopsy Planning
Clear visibility helps the specialist identify areas that may require tissue sampling.
Reduced Cancellation Risk
Eating or drinking too close to the examination may require delay, rescheduling or a different sedation plan.
Gastroscopy Fasting Timeline
Follow the exact times sent with your appointment.
The timeline below reflects the clinic’s common preparation pathway. Your instructions may be different when your health, symptoms or medicine use require additional precautions.
DAY
BEFORE
Eat Normally Unless Advised Otherwise
Most patients do not need a special bowel-cleansing diet for gastroscopy alone. Avoid an unusually large, heavy or very late meal when your appointment is early.
BEFORE
8–6
HOURS
Stop Solid Food
The clinic commonly instructs patients not to eat during the final six to eight hours before gastroscopy. Milk and opaque nutritional drinks count as food.
HOURS
FINAL
2 HOURS
Stop Water And Clear Liquids
Apgujeong Hana Clinic commonly requires no water during the final two hours. Earlier cutoffs may apply in selected patients.
2 HOURS
AT
ARRIVAL
Confirm Fasting Honestly
Tell the team exactly when and what you last ate or drank. This information protects your safety and does not lead to judgment.
ARRIVAL
The clinic’s written instruction takes priority over a general online fasting rule
Your doctor may use a longer fasting period when you have persistent vomiting, severe fullness, suspected gastroparesis, obstruction symptoms or another reason for delayed stomach emptying.
What Counts As Food Or Clear Liquid?
Some drinks that look light are not considered clear liquids.
๐ง Examples Of Clear Liquids
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Plain water before the clinic’s final water cutoff.
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Clear tea without milk, cream or solid ingredients when permitted.
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Black coffee without milk or cream when specifically permitted.
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Pulp-free clear drinks when approved by the clinic.
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A small sip of water for an essential medicine only when instructed.
๐ซ These Are Not Clear Liquids
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Milk, latte, milk tea, cream, yoghurt drinks or protein shakes.
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Juice containing pulp, smoothies or blended fruit.
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Soup containing solids, thick broth or porridge.
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Alcohol, regardless of colour or clarity.
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Gum, candy, mints or supplements during the fasting period unless approved.
Medication Preparation
Most medicines do not need to be stopped—but some require a plan.
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Send the clinic a complete medication list before your appointment.
Include prescriptions, injections, over-the-counter medicines, supplements and traditional remedies. Do not stop an important treatment independently.
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Blood Thinners
Aspirin, warfarin, apixaban, rivaroxaban, clopidogrel and similar medicines require review when biopsy or treatment may be needed.
2๏ธโฃ
Diabetes Medicines
Fasting may require changes to insulin or selected tablets to reduce low- or high-glucose risk.
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GLP-1 Medicines
Report Wegovy, Ozempic, Mounjaro, Zepbound, Saxenda and other medicines that may affect stomach emptying.
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Heart & Blood Pressure Medicines
Many are continued, but the exact timing should be confirmed when sedation or significant medical illness is involved.
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Acid-Suppressing Medicines
Do not stop proton-pump inhibitors or H2 blockers unless the clinic gives a specific diagnostic reason.
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Iron & Supplements
Report iron, herbal products and supplements, particularly when they affect bleeding, glucose or stomach symptoms.
Do not stop blood thinners without approval from the prescribing doctor
Stopping anticoagulant or antiplatelet medicine can increase clotting, stroke or heart risk. The plan depends on why you take it and what may be performed during endoscopy.
Wegovy, Ozempic, Mounjaro & Other GLP-1 Medicines
Current guidance supports an individual risk assessment rather than one rule for every patient.
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Most patients should not stop GLP-1 treatment automatically.
The clinic considers treatment stage, dose changes, digestive symptoms, the reason for endoscopy and the planned sedation before giving instructions.
Tell Us The Product
Provide the medicine name, current dose, injection schedule and date of the most recent dose.
Report Dose Escalation
Recent initiation or dose increase may be associated with more nausea, fullness and delayed stomach emptying.
Report Digestive Symptoms
Persistent nausea, vomiting, bloating, abdominal pain or prolonged fullness can change the preparation plan.
Extended Liquid Diet
Selected higher-risk patients may receive a liquid-only plan before the procedure rather than a routine diet.
Possible Delay
Elective endoscopy may be postponed when significant symptoms suggest retained stomach contents or aspiration risk.
Do Not Decide Alone
Stopping treatment can affect diabetes or weight management and should be coordinated with the medical team.
Health Conditions To Report
Preparation and sedation may change according to your medical history.
2๏ธโฃ
Diabetes
Tell the clinic about insulin, tablets, CGM use, previous hypoglycaemia and your usual fasting glucose pattern.
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Heart Disease
Report chest pain, heart failure, rhythm problems, coronary stents, implanted devices and recent procedures.
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Lung Disease
Asthma, COPD, oxygen use, recent infection and breathing difficulty may affect sedation planning.
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Sleep Apnoea
Report CPAP use, loud snoring, witnessed breathing pauses and previous sedation-related breathing problems.
๐ฅฃ
Delayed Stomach Emptying
Gastroparesis, recurrent vomiting, obstruction symptoms or severe prolonged fullness may require modified preparation.
๐คฐ
Pregnancy
Pregnancy possibility, breastfeeding and fertility treatment should be discussed before sedation or medication changes.
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Allergies
Report medication allergies, latex reactions and any previous serious response to sedation or anaesthesia.
๐ฆท
Dental Work
Tell the team about loose teeth, dentures, removable bridges, oral piercings and fragile dental restorations.
๐งช
Kidney Or Liver Disease
Organ function may affect medicine selection, glucose control, bleeding risk and recovery.
Procedure-Day Checklist
Arrive prepared so the clinical review can proceed efficiently.
01
Confirm Last Intake
Know the exact time and type of your last food, water, coffee, medicine, gum or candy.
02
Bring Medicine Information
Bring a written list, medication packages or clear photos showing names and doses.
03
Bring Previous Records
Previous gastroscopy, pathology, imaging or H. pylori results may help the specialist.
04
Remove Removable Dental Items
Dentures and removable oral appliances are managed before the endoscope is inserted.
05
Wear Comfortable Clothing
Choose clothing that allows easy blood-pressure, IV and monitoring access.
06
Check Glucose When Directed
Patients with diabetes may need home or clinic glucose checks before and after fasting.
07
Arrange Safe Transport
Plan a companion, taxi or other clinic-approved journey home when sedation is used.
08
Arrive On Time
Pre-procedure consultation, consent, vital signs and medicine review occur before gastroscopy.
Preparing For Same-Day Gastroscopy
Contact the clinic before beginning an unscheduled fast.
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Same-Day Gastroscopy
May be available for eligible patients when the schedule, fasting status, medical history and procedure indication allow.
Confirm First
Fasting alone does not guarantee a same-day procedure.
Message the clinic with your symptoms, last food and drink, medicine list and sedation preference. The team will confirm whether same-day evaluation is appropriate.
โ Appointment availability confirmed
โ Fasting interval considered adequate
โ Medical history reviewed
โ Sedation transport arranged
โ Urgent symptoms triaged appropriately
โ Procedure indication confirmed
Contact The Clinic Before Arrival
Preparation may need review when something changes.
๐ฝ๏ธ
You Ate Or Drank Too Late
Do not hide the timing. Contact the clinic so the team can decide whether to delay, reschedule or change the plan.
๐คฎ
You Have Vomiting Or Severe Fullness
These symptoms may suggest delayed emptying or another condition that increases aspiration risk.
๐ค
You Developed A Fever Or Infection
Respiratory illness, severe cough or acute infection may affect procedural or sedation safety.
๐ฉธ
Your Glucose Is Unsafe
Significant low or high glucose during fasting requires medical advice rather than waiting silently.
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You Changed A Medicine
Tell the clinic about missed doses, new prescriptions or unplanned changes to insulin or blood thinners.
๐จ
You Have Emergency Symptoms
Vomiting significant blood, black stool with faintness, breathing difficulty or severe pain requires urgent medical assessment.
What Happens After You Arrive?
Preparation is confirmed before the procedure begins.
1
Check-In
Confirm identity, procedure, fasting times, medicines and contact information.
2
Specialist Consultation
Dr. Yang reviews symptoms, previous tests, procedure indication and relevant risks.
3
Sedation & Consent Review
Discuss comfort options, monitoring, biopsy, alternatives and post-sedation transport.
4
Gastroscopy & Results
The specialist performs the examination and explains initial findings after recovery.
โ๏ธ
Your Endoscopy Specialist
Dr. Yang Jae-hoon
Board-certified gastroenterologist, internal-medicine specialist and certified endoscopy sub-specialist with more than 15 years of clinical experience.
Specialist-Direct Endoscopy
The gastroenterologist reviews your preparation and performs the examination.
Dr. Yang confirms the indication, fasting status, medication plan, sedation suitability and possible need for biopsy before performing gastroscopy directly.
โ Board-certified gastroenterologist
โ Endoscopy sub-specialist certification
โ 15+ years of clinical experience
โ Korean and English consultation
โ English reports available
โ Direct result explanation
Endoscopy Center Services
Explore all eight upper-endoscopy service pages.
๐ฅ
Endoscopy Center Seoul
Specialist gastroscopy, sedation, biopsy, recovery and English result support.
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Gastroscopy Seoul
Examination of the esophagus, stomach and duodenum for persistent symptoms.
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Sedation Endoscopy
Comfort assessment, monitoring, recovery and transport guidance.
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Same-Day Endoscopy
Eligibility, scheduling, fasting requirements and same-day logistics.
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Endoscopic Biopsy
Tissue sampling, pathology, H. pylori assessment and result timelines.
๐ก๏ธ
Stomach Cancer Screening
Risk assessment, gastroscopy, biopsy and individual follow-up.
โฑ๏ธ
Gastroscopy Preparation
Fasting, medicine review, GLP-1 guidance and procedure-day checklist.
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Gastroscopy Recovery
Eating, activity, sedation effects, common symptoms and warning signs.
Apgujeong, Gangnam
Receive gastroscopy preparation instructions in English.
Contact Apgujeong Hana Clinic before fasting so the team can confirm your appointment, medicine plan, sedation request and final preparation schedule.
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328 Apgujeong-ro, Gangnam-gu, Seoul, KFC Building 3F
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Monday–Friday 09:00–19:00
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Saturday 09:00–13:00
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Weekday lunch break 13:00–14:00
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Sunday and public holidays closed
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02) 3443-7550
โฑ๏ธ
Apgujeong Hana Clinic
English-friendly gastroscopy preparation, specialist consultation, sedation options and direct result explanation in Gangnam.
FAQ
Gastroscopy preparation questions, answered.
Use the instructions sent by the clinic as your final schedule. Contact the team before changing any prescription medicine.
Apgujeong Hana Clinic commonly advises no food for approximately six to eight hours and no water during the final two hours before gastroscopy. Follow the exact times sent with your appointment because individual instructions may differ.
Water may be permitted earlier in the fasting period, but the clinic commonly requires no water during the final two hours. Follow your appointment-specific cutoff.
Plain clear tea or black coffee without milk may sometimes be treated as clear liquids before the final cutoff. Milk, cream, latte and milk tea are not clear liquids. Use the clinic’s instructions.
Many medicines can continue, but blood thinners, diabetes treatment, GLP-1 medicines and selected other prescriptions need individual review. Do not stop an important medicine independently.
Do not stop these medicines automatically. Tell the clinic the product, dose, last injection date, recent dose changes and whether you have nausea, vomiting, bloating or prolonged fullness.
Gastroscopy alone generally does not require colon-cleansing medicine. Bowel preparation is required when colonoscopy is also being performed.
Contact the clinic and provide the exact time and type of intake. The procedure may need to be delayed, rescheduled or performed under a modified plan.
No. Patients receiving sedation must not drive. Arrange a companion, taxi or another transport option according to the clinic’s discharge instructions.
Same-day gastroscopy may be available for eligible patients when the schedule, fasting status, medical history and procedure indication allow. Contact the clinic before fasting or travelling.
Message WhatsApp +82 10-2950-7551, call 02) 3443-7550 or use Naver Booking. Include your appointment preference, current medicines, medical conditions and whether you want sedation.
Related Endoscopy Services
Explore related gastroscopy, sedation and recovery pages.
Need your gastroscopy preparation checked in English?
Contact Apgujeong Hana Clinic before fasting to confirm your appointment time, medication plan, sedation request and final food-and-water cutoffs.