Colonoscopy - Preparation

Boise - Caldwell

Over the Counter Items to Purchase

  • 4 Dulcolax (active ingredient: Bisacodyl) Tablets
  • 238 Gram Bottle of the Non­ Prescription medication Miralax (Generic Ok)
  • 64 Ounces of Gatorade, NO red- or purple-colored flavors

Five Days Prior to Procedure

  • Stop all anti-inflammatory medications. These include Aspirin, Ibuprofen, Motrin, Aleve, Naprosyn, Naproxen, Sulindac, Piroxicam, Flededn, Indomethacin, Diclofenac, or Voltaren.
  • Tylenol (Acetaminophen) is ok and safe to use in place of the above anti-inflammatory medications
  • If you are taking Coumadin (Warfarin), Plavix (Clopidogrel), Xarelto (Rivaroxaban) or any other blood thinners please contact our office regarding this medication, if instructions to hold this drug have not already been given at the time of you office visit.
  • Stop all fiber supplements including Metamucil, Citrucel, Benefiber, Fiber Choice and Flax seeds.
  • If you are diabetic and use insulin, please contact our office for insulin instructions if not already discussed at your visit.
  • Should you have ANY QUESTIONS about any medications you should or should not take please call our office.

One Day Prior to Your Procedure

  • Take only clear liquids by mouth. A good rule of thumb with a clear liquid is anything you can hold up to the light and see through. These include clear juices (apple/white grape juice), tea, coffee (No Cream or sugar), clear soft drinks, sports drinks (Gatorade,G2,PowerAde), Clear broth, Bouillon, Jell-O or popsicles.
  • Continue to avoid red- and purple-colored products and dairy products along with consuming large amounts of fluids to avoid hunger and dehydration.
  • At 10:00am take two (2) Dulcolax tablets. You may begin to experience intestinal cramping and stooling shortly after taking this medication.
  • At 3:00pm take the other two (2) Dulcolax tablets. Again, you may continue to experience or begin to experience intestinal cramping and stooling shortly after taking this medication.
  • At 5:00pm mix the 238 gram bottle of MiraLAX (or generic) into the 64 ounces of Gatorade. Mix or shake until the powder has completely dissolved into the solution. Drink a 8-10 ounce glass every 10-15 minutes until the entire solution is gone. Should you develop nausea after drinking this solution it is ok to slow down to an 8–10-ounce glass every 20-25 minutes. You will begin to experience loose stools shortly after you begin this medication.
  • You may continue consuming clear liquids until 6 hours prior to your procedure.

The Day of Your Procedure

  • Take your usual prescribed medications with small sips of water, unless otherwise indicated.
  • Please bring a copy of your current medications with the dosage to your procedure.
  • You may NOT drive after the procedure. It is strongly recommended that you enlist a family member or a friend to take you home safely after the procedure.


For questions or concerns before or after procedure, contact us.

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Patient Testimonials

Jessy Davenport
I’m leaving this review on behalf of my mother, Novella (as she isn’t tech savvy). Here’s what she had to say: From the moment you walk in the door, you’re treated so kindly. The front desk staff knew me by name and would joke and interact with me every time I came in. Dr. Gay is phenomenal. He’s patient and explains well. I had to have surgery to remove a cyst and even the surgery center, Treasure Valley Hospital, experience was great. Not something people typically say but it was a pleasant surgery experience. I highly recommend!
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Danny Cruz
DR.Daniel Gay was wonderful to work with after being referred to by my primary doctor from Pionner family medical DR.Ludwig. DR.Gay's personal office assistant was very informative with the steps I would be taking moving forward. My personal experience was great throughout my whole process.
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Gina Wooddall
Daniel Gay one of the Best caring Hernia doctors. Awesome Doctor I had surgery Jan 8, 2024 he did such a amazing job so blessed to have him as my surgeon highly recommended Dr Daniel Gay the nurse staff Sara and Kim absolutely amazing to work with. I'm very pleased with the outcome. Daniel is so Kind and Very Respectful and cares deeply about his patients
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Matthew Tracy
This surgeon needs protected at all costs! I needed emergency surgery on a Friday. Dr. Gay stayed late to perform the operation. I'll never forget his kindness and the respect he showed to a stranger in dire need. A rare breed indeed. Good men are hard to find. Thank you so much Dr. Gay!
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chrystal Bourff
Greatest ever! Wonderful as fast and caring as Dr Gay was. He and all of his staff treated me with kindness and compassion. I have never been as happy to call him my Doctor!
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I just had the best hospital visit ever for a procedure. I had a large lipoma removed and had to go under general anesthesia for its removal because of its size and location. All of the staff at Capital Surgical Associates and Treasure Valley Hospital were the most courteous and pleasant health professionals I've dealt with. Dr. Gay was helpful in laying out what was going to be done while the recovery was extremely easy. The follow-up visit with him was helpful in explaining what had happened and what I needed to do going forward. I cannot imagine a better experience.
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brett pendleton
Dr. Gay was great! I always saw him on my visit and not another provider. I had a lipoma on my back and it was one of the smoothest, easiest surgeries I've had. He's easy to talk to and his office staff are funny and to the point. You can tell he genuinely cares about his patients. Thanks Dr. Gay and staff!
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Luke Folke
Dr. Gay did a great job on an inguinal hernia surgery for me a few weeks ago. I really appreciate his practical but caring approach, his respectful manner and his professionalism! His assistant Sarah is awesome! She worked really hard to keep the ball rolling for us and we are truly thankful for her diligence in getting me in, and communicating thoroughly through the whole thing! I am also grateful for the team at Treasure Valley Hospital and the great care I was given during my surgery! Thanks so much! -Luke Folke
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