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No, you usually should not drink coffee before a CT scan, unless your scan prep instructions clearly allow plain black coffee as a clear liquid.

Yes, small amounts of black coffee are sometimes allowed before a colonoscopy, but always follow your written prep instructions.

No, you shouldn’t drink coffee before a fasting blood test, though it may be allowed before some non-fasting tests if your doctor says it is fine.

Yes, drinking coffee while breastfeeding is fine if total caffeine stays under 200–300 mg a day and your baby stays settled.

Yes, you can drink coffee after wisdom teeth removal, but skip hot coffee for at least 24 hours and follow your oral surgeon’s specific advice.

Yes, you can drink coffee after tooth extraction once 24 hours pass, starting with cool sips and only if your dentist is happy with healing.

Yes, you can drink coffee after levothyroxine, but leave at least 30 to 60 minutes so the thyroid medicine absorbs properly.

No, avoid hot coffee for at least 24–48 hours after lip fillers; once swelling eases, cooler coffee is usually fine if your injector agrees.

Yes, you can drink coffee after gallbladder surgery once the early healing phase passes and your doctor is happy with how your digestion is reacting.

Yes, you can drink coffee after gallbladder removal, but start with small cups and avoid rich creamers if it causes cramps or loose stools.