Diabetic General Recommendations & Instructions

These are only recommendations, please check with your prescribing physician for more detailed instructions specifically for you.

Medication Recommendations

  • Oral Diabetes Medications
    • Take your normal dose in the morning the day before you colonoscopy by 11:00am with your light breakfast.
    • Do not take oral diabetic medications the rest of this day since you will be on clear liquids.
    • Restart your oral diabetic medications after the procedure when you resume eating.
  • Insulin
    • Long Acting Insulin (Lantus or Levemir) – take half of your usual dose the day before and the morning of your procedure.
    • 70/30 or 75/25 Insulin – take half of your usual dose the day before and the morning of your procedure.
    • Short Acting Insulin (Meal-related Insulin or Sliding Scale Insulin) – Humalog, Aspart, Novalog
      • The day before your colonoscopy take sliding scale/meal related insulin if indicated in the morning with your light breakfast.
      • Do not take Short Acting insulin the rest of the day.
      • Restart these medications after the procedure when you resume eating.
    • Insulin Pump – consult your endocrinologist for recommendations.

General Instructions

  • Check your blood glucose frequently during the preparation period, especially if you feel it is running too low.
  • Your blood glucose levels may run higher than usual during this period due to adjustments in your diabetes medications.
    • If blood glucose becomes extremely high (greater than 350) call your prescribing physician.
  • For low blood glucose levels, sweetened clear liquids/juices may be taken or you may suck on a hard candy until the allotted time per your instructions.
  • Resume your usual diabetic diet and medications immediately after your procedure unless you are instructed to do otherwise.
    • If your diet remains restricted following the procedure, ask your physician for instructions regarding diabetic medication adjustment.