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Sutab Dosage

Generic name: SODIUM SULFATE 17.75g, MAGNESIUM SULFATE ANHYDROUS 2.7g, POTASSIUM CHLORIDE 2.25g
Dosage form: tablet

Medically reviewed by Drugs.com. Last updated on Nov 20, 2020.

Preparation and Administration Instructions


  • Correct fluid and electrolyte abnormalities before treatment with SUTAB [see Warnings and Precautions ( 5.1)]
  • Administration of two doses of SUTAB (24 tablets) are required for a complete preparation for colonoscopy. Twelve (12) tablets are equivalent to one dose.
  • Water must be consumed with each dose of SUTAB and additional water must be consumed after each dose.
  • Consume a low residue breakfast on the day before colonoscopy, followed by clear liquids up to 2 hours prior to colonoscopy.
  • Do not drink milk or eat or drink anything colored red or purple.
  • Do not drink alcohol.
  • Do not take other laxatives while taking SUTAB.
  • Do not take oral medications within 1 hour of starting each dose of SUTAB.
  • If taking tetracycline or fluoroquinolone antibiotics, iron, digoxin, chlorpromazine, or penicillamine, take these medications at least 2 hours before and not less than 6 hours after administration of each dose of SUTAB.
  • Stop consumption of all fluids at least 2 hours prior to the colonoscopy.

Split-Dose (2-Day) Regimen

The recommended Split-Dose regimen for adults consists of two doses of SUTAB: the first dose during the evening prior to colonoscopy and the second dose the next day, during the morning of the colonoscopy.

Instruct patients:

Dose 1 – On the day prior to colonoscopy:

  • A low residue breakfast may be consumed. Examples of low residue foods are eggs, white bread, cottage cheese, yogurt, grits, coffee, tea.
  • After breakfast, only clear liquids may be consumed until after the colonoscopy.
  • Early in the evening prior to colonoscopy, open one bottle of 12 tablets.
  • Fill the provided container with 16 ounces of water (up to the fill line). Swallow each tablet with a sip of water and drink the entire amount over 15 to 20 minutes.
  • Approximately one hour after the last tablet is ingested, fill the provided container a second time with 16 ounces of water (up to the fill line) and drink the entire amount over 30 minutes.
  • Approximately 30 minutes after finishing the second container of water, fill the provided container again with 16 ounces of water (up to the fill line) and drink the entire amount over 30 minutes.
  • If patients experience preparation-related symptoms (e.g. nausea, bloating, cramping), pause or slow the rate of drinking the additional water until symptoms diminish.

Dose 2 - Day of colonoscopy:

  • Continue to consume only clear liquids until after the colonoscopy.
  • The morning of colonoscopy (5 to 8 hours prior to the colonoscopy and no sooner than 4 hours from starting Dose 1), open the second bottle of 12 tablets.
  • Fill the provided container with 16 ounces of water (up to the fill line). Swallow each tablet with a sip of water and drink the entire amount over 15 to 20 minutes.
  • Approximately one hour after the last tablet is ingested, fill the provided container a second time with 16 ounces of water (up to the fill line) and drink the entire amount over 30 minutes.
  • Approximately 30 minutes after finishing the second container of water, fill the provided container again with 16 ounces of water (up to the fill line) and drink the entire amount over 30 minutes.
  • If patients experience preparation-related symptoms (e.g. nausea, bloating, cramping), pause or slow the rate of drinking the additional water until symptoms diminish.
  • Complete all SUTAB tablets and water at least two hours prior to colonoscopy.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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