If you’re scheduled for a colonoscopy, you will need to consider what you can eat and drink, as well as when to stop. Many people wonder, “Can I have water before my colonoscopy?”
The answer is yes, but only up to a certain point.
Most guidelines say to stop drinking clear liquids, like water, about 5 hours before your appointment. However, specific instructions can vary by doctor or surgical center, so it’s important to follow the prep instructions you were given.
Preparing for a colonoscopy takes more than just fasting the night before. The goal is to completely clear out your colon so your doctor can see the lining clearly. That means making changes to what and when you eat and drink in the 24 to 36 hours beforehand.
In general, a colonoscopy prep requires these steps:
Your doctor will tell you when to start this, but it usually begins the morning before your colonoscopy.
On a clear liquid diet, you can only consume liquids you can see through, meaning no solids, no milk, nothing with dyes, and nothing with pulp or residue.
Approved clear liquids include:
You’ll typically need to stop eating solid foods at least 24 hours before the procedure. Your doctor will give you specific instructions regarding timing.
You’ll be instructed to drink a laxative solution that causes diarrhea to flush your colon. Follow the instructions given to you by the office instead of the directions on the box. Add in lots of clear liquids, like water, until the cut-off time.
Getting your colon completely clean is necessary for an effective and safe colonoscopy. If your bowel isn’t clear:
In addition, sedation and recovery may be less safe if food or fluid remains in your stomach. Water in your stomach at the time of sedation can increase the risk of vomiting and aspiration of stomach contents, too. This is why drinking stops 3 hours before the appointment.
Remember, you can drink water during most of your colonoscopy prep, and staying well-hydrated is encouraged. Water helps wash the laxative solution through your system and prevents dehydration. While most people should stop all fluids about 5 hours before their procedure, your exact instructions may vary.
The prep process can feel overwhelming at first. There are detailed instructions about timing, diet, and medications to worry about. But following these directions closely gives your doctor the best chance to detect any issues. It also helps you avoid having to repeat the procedure.
If anything is unclear or you’re worried about whether you can have water before your colonoscopy, don’t hesitate to call. Your doctor can also answer questions about how to handle your current medications or dietary restrictions. Asking ahead of time can make the process smoother and ensure your test delivers the most accurate results possible.
If you’re 45 or over, it’s time for your colonoscopy – schedule an appointment today!
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