Short answer: It is generally best to avoid alcohol for at least 24 hours after a colonoscopy, and many guidelines suggest delaying alcohol until you’re fully recovered and no longer under sedation. Always follow your specific physician’s instructions. Details and practical guidance

• Sedation and anesthesia: Colonoscopies are often performed with sedation. Alcohol can amplify sedative effects and impair judgment, coordination, and reaction time as you recover. Wait until the sedation wears off and you’re fully alert before consuming any alcohol. [general guidance from post-procedure care guidelines]
• Hydration and healing: The procedure and prep can leave the body dehydrated and the digestive tract sensitive. Alcohol can worsen dehydration, bloating, or stomach upset during the initial recovery period. Focus on fluids and light foods first. [post-procedure care guidance]
• Typical waiting period: A common precaution is to avoid alcohol for at least 24 hours after the procedure. Some sources extend this to 24 hours or more depending on sedation, the findings during the colonoscopy, and your personal health. Always defer to the exact instructions provided by your healthcare team. [standard aftercare recommendations]
• When to resume alcohol: After the initial 24-hour window, resume alcohol only if you feel well, can tolerate foods and fluids, and have no adverse symptoms such as unusual abdominal pain, heavy bloating, or dizziness. If any concerns arise, contact your doctor. [aftercare cautions]
• Special considerations: If polyps were removed or biopsies taken, or if you have any other medical conditions, your doctor might give additional restrictions. Always follow the personalized advice given in your discharge instructions. [procedure-specific notes]

What to do now

• Check your post-procedure instructions or call the clinic for the exact guidance they provided you.
• If you’re within 24 hours of the procedure, avoid alcohol and ensure adequate hydration with water, clear broths, or electrolyte drinks.
• If you have any concerning symptoms (severe abdominal pain, fever, vomiting, persistent dizziness, or confusion), contact your healthcare provider promptly. [safety guidance]

If you’d like, share the exact advice your doctor gave you or your sedation type, and the time since the procedure, and these can be used to tailor the guidance precisely.