When to Stop Eating, Drinking, or Smoking Before a Procedure in Turkey

Preparing for a procedure includes knowing exactly when to stop eating, drinking and smoking. Your personal instructions from the clinical team always take priority, as fasting times depend on your procedure, anesthesia and health needs.

Why fasting instructions matter before your procedure

Before a procedure involving anesthesia, sedation or certain examinations, you may need to stop eating and drinking for a period of time. This is often called fasting or being “nil by mouth.” The main purpose is safety: when you are sleepy, sedated or under anesthesia, normal protective reflexes may not work as well. If there is food or liquid in your stomach, it can travel back up and enter your lungs.

Your fasting plan is individual. It can vary according to your age, medical history, medicines, diabetes status, pregnancy, the type and timing of your procedure, and whether you will have local anesthesia, sedation or general anesthesia. A general online rule is never a substitute for the instructions provided by your anesthesiologist, surgeon, nurse or procedural team.

At Acibadem International, the international patient services team can help ensure you receive and understand your pre-procedure instructions in your preferred language. If anything is unclear after you arrive in Turkey, ask before making assumptions—especially about water, coffee, chewing gum, medication or smoking.

When to stop eating solid food

Many patients are asked not to eat solid food for several hours before anesthesia. Solid food includes meals, snacks, fruit, bread, dairy products, sweets, nuts and foods described as “light.” A small snack still counts as food, and a late-night meal can affect the timing of a morning procedure.

Some foods take longer to leave the stomach than others. Fried foods, fatty meals and large meals may require a longer fasting period than a light meal. For this reason, your team may advise an earlier cutoff time if you are having a procedure early in the morning or if your anesthesia assessment identifies additional considerations.

Do not try to compensate by skipping meals for an unnecessarily long time unless instructed. Prolonged fasting can leave you thirsty, weak or uncomfortable. Instead, follow the time written on your plan and contact your care coordinator if your procedure time changes, because your fasting schedule may need to change too.

What you may drink—and when to stop

Drinking instructions are often different from food instructions. In some cases, clear liquids may be permitted until closer to the procedure time, while milk, smoothies, juice with pulp, alcohol and nutritional drinks may need to stop earlier. The exact timing must come from your own clinical team.

Clear liquids commonly include plain water and, in some situations, drinks such as clear tea or black coffee without milk or cream. However, policies can differ between procedures and patients. Do not assume that a drink is acceptable because it looks clear: ask about sports drinks, herbal teas, juice, broth, chewing-gum liquids and oral rehydration products if they are not specifically listed in your instructions.

Alcohol should be avoided before your procedure unless your doctor has explicitly advised otherwise. It can interact with anesthesia, affect hydration and alter how your body responds to medicines. If you had alcohol closer to your procedure than planned, tell your care team honestly; this information helps them make the safest decision for you.

Smoking, vaping and nicotine before treatment

Smoking can affect breathing, circulation, wound healing and recovery from anesthesia. Vaping, heated tobacco products and nicotine-containing products can also be relevant, so mention all nicotine use during your pre-procedure assessment. Your team may ask you to avoid smoking and vaping from a particular time before treatment, and stopping earlier is generally beneficial.

Do not smoke or vape on the morning of your procedure unless your clinical team has specifically instructed otherwise. Smoking immediately before anesthesia can irritate your airways and increase respiratory risks. This includes “just one cigarette,” shisha, e-cigarettes and other inhaled nicotine products.

If you use nicotine regularly, stopping can be difficult, particularly when you are travelling or feeling anxious. Let your doctor or nurse know rather than restarting without asking. They can advise whether nicotine replacement or another approach is suitable for your specific procedure and medical history.

Medicines, diabetes and special dietary needs

Fasting does not automatically mean stopping every medicine. Some medicines may be taken with a small sip of water, while others—such as certain diabetes medicines, blood thinners, weight-loss medicines or supplements—may need an adjusted plan. Take only the medicines your team has told you to take, at the time they have advised.

If you have diabetes, the fasting period needs particularly careful planning because your food intake, insulin or other glucose-lowering medicines may need to be adjusted. Bring your glucose monitoring supplies if you use them, and tell the team promptly if you feel shaky, sweaty, confused, very thirsty or unwell.

Also tell your team if you are pregnant, have reflux, swallowing difficulties, kidney disease, a history of delayed stomach emptying, or use medicines that can affect digestion. Share any special diet, tube-feeding plan or nutritional need in advance. Multidisciplinary teams can coordinate with you so that safety and comfort are both considered.

If you accidentally eat, drink or smoke

If you eat, drink, chew gum, suck sweets, smoke or vape after your stated cutoff time, do not hide it or assume it does not matter. Contact your Acibadem International coordinator, ward, clinic or procedure unit as soon as possible and explain exactly what you had and when. This includes small amounts.

Your team will decide what is safe based on the item, amount, timing and planned anesthesia. Sometimes there is no change; in other cases, the procedure may need to be postponed or the anesthesia plan adjusted. Although a delay can be frustrating, it is a safety decision rather than a failure on your part.

Keep your procedure-day instructions easily available while travelling in Istanbul or staying at your accommodation. Set reminders for your food, drink and medication cutoffs, especially if jet lag, an early admission time or a different time zone could cause confusion.