[4:55 PM] Michelle Dennison-Bunch

Miralax / Dulcolax Colonoscopy Prep

** Following these instructions correctly will help your colonoscopy prep and procedure go smoothly**

MiraLAX® is a nonstimulant laxative that works with the water in your body to give you gentle, effective relief from occasional constipation — with no harsh side effects.

A trusted laxative brand for 70 years, Dulcolax® is the #1 doctor-recommended brand among stimulant laxatives and has the most extensive range of solutions to help provide gentle, dependable constipation relief.

3 days before the procedure

  1. Please start a low residue diet.

The day before the procedure

  1. You may have a low residue breakfast and lunch.
  2. At 1:00 PM, start a CLEAR LIQUID DIET. Remain on clear liquids until 2 hours before your procedure.                           ♦ Do not eat solid foods or dairy products.                             ♦ Avoid red, orange, and purple-colored liquids which can mimic blood.                                                                           ♦ Avoid alcohol for 24 hours before your procedure.
  3. At 2:00 pm take 2 Dulcolax (bisacodyl) tablets (5mg each)
  4. At 4:00 pm take 2 Dulcolax (bisacodyl) tablets (5mg each)
  5. At 5:00 pm mix 2 packets of Gatorade or Propel and 10 doses of the Miralax in the pitcher, fill with water and drink. Try to drink 8oz every 10-15 minutes. After finished repeat the mixture of 2 packets of Gatorade or Propel and 10 doses of Miralax in pitcher with water and drink. You will drink 20 doses Miralax and approximately 60oz of the Gatorade/Propel water total. (Save 10 doses of Miralax and 2 packets of Gatorade or Propel for the morning.)
  6. Continue to drink plenty of fluids including juice, broth, and sports drinks with potassium and other electrolytes to avoid dehydration and electrolyte imbalance.
  7. At bedtime take 2 Dulcolax (bisacodyl) tablets (5mg each)
  8. The morning of your procedure, stay on CLEAR LIQUID DIET. Do not eat solid foods or dairy products.

On the day of the procedure

  1. Five (5) hours prior to leaving for the procedure – take 2 Dulcolax (bisacodyl) tablets (5mg each)
  2. One hour later – Mix the remaining 2 packets of Gatorade or Propel and 10 doses of Miralax in the pitcher with water. Drink an 8oz glass of mixture every 10-15 minutes until it is gone.
  3. Two (2) hours before you leave to travel to your procedure STOP drinking all liquids. Do not chew gum or suck on hard candy.
  4. Please take any essential medications, such as heart, blood pressure, asthma, or seizure meds as usual.
  5. You may use Vaseline or similar agents to the perianal area to help with burning or pain.

After the prep, final check

After completing the colon prep:

  1. The effluent (material) from the rectum should be clear or light yellow
  2. You should be able to read a newspaper through an inch of the liquid.

If the above characteristics do not describe what you see, you may need additional prep.
Call 208-743-4373 ASAP.

If it is over the weekend and the office is closed, please go the store and purchase over the counter 8.3 oz of Miralax and 56oz. Gatorade/Powerade. Drink until the material matches the description above.


We do not allow public transportation or ride services for your safety.