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Generic Name: Polyethylene Glycol-Electrolyte Solution (pol i ETH i leen GLY kol ee LEK troe lite soe LOO shun)
Brand Name: Colyte, GaviLyte-C, GaviLyte-G, GaviLyte-N, GoLYTELY, all 8 brand names.

Uses of TriLyte:

  • It is used to clean out the GI (gastrointestinal) tract.

What do I need to tell my doctor BEFORE I take TriLyte?

  • If you have an allergy to polyethylene glycol or any other part of TriLyte (polyethylene glycol-electrolyte solution).
  • If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
  • If you have any of these health problems: Bowel block, enlarged colon, hole in the GI (gastrointestinal) tract, or slow-moving GI (gastrointestinal) tract.
  • If you have electrolyte (like sodium, potassium, phosphate) problems.

This is not a list of all drugs or health problems that interact with TriLyte (polyethylene glycol-electrolyte solution).

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take TriLyte (polyethylene glycol-electrolyte solution) with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take TriLyte?

  • Tell all of your health care providers that you take TriLyte (polyethylene glycol-electrolyte solution). This includes your doctors, nurses, pharmacists, and dentists.
  • Do not use other laxatives or stool softeners unless told to do so by the doctor.
  • If you have phenylketonuria (PKU), talk with your doctor. Some products have phenylalanine.
  • If you are over the age of 60, use TriLyte (polyethylene glycol-electrolyte solution) with care. You could have more side effects.
  • Some drugs may be used in children. Use care if TriLyte (polyethylene glycol-electrolyte solution) is given to a child. Talk with the doctor to see if TriLyte (polyethylene glycol-electrolyte solution) may be used in children. Talk with the doctor if you have questions about giving TriLyte (polyethylene glycol-electrolyte solution) to a child.
  • Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using TriLyte (polyethylene glycol-electrolyte solution) while you are pregnant.
  • Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.

How is this medicine (TriLyte) best taken?

Use TriLyte (polyethylene glycol-electrolyte solution) as ordered by your doctor. Read all information given to you. Follow all instructions closely.

  • Take TriLyte (polyethylene glycol-electrolyte solution) as your doctor has told you. Follow all instructions you have been given closely. This includes when to take TriLyte (polyethylene glycol-electrolyte solution), foods and drinks to avoid before the exam, and when to stop eating and drinking before the exam. Talk with your doctor if you have any questions.
  • Do not take other drugs within 1 hour of starting TriLyte (polyethylene glycol-electrolyte solution). Talk with your doctor about how to take your other drugs with TriLyte (polyethylene glycol-electrolyte solution).
  • Mix with water as told before you take TriLyte (polyethylene glycol-electrolyte solution). Do not swallow the dry powder.
  • Some products come with flavors that can be added to the solution. Only add flavors that come with the kit.
  • Chill the solution to make it taste better. However, do not give chilled solution to an infant. Talk with your doctor.
  • Shake well before use.
  • Drink clear liquids before, during, and after taking TriLyte (polyethylene glycol-electrolyte solution). Do not drink any liquids that are purple or red.

What do I do if I miss a dose?

  • Take a missed dose as soon as you think about it.
  • If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
  • Do not take 2 doses at the same time or extra doses.
  • Call your doctor if you are not able to finish TriLyte (polyethylene glycol-electrolyte solution) before your exam.

See also: Dosage Information (in more detail)

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Belly pain.
  • Swelling of belly.
  • Very upset stomach or throwing up.
  • Very bad headache.
  • Throwing up blood or throw up that looks like coffee grounds.
  • Black, tarry, or bloody stools.
  • Bleeding from rectum or rectal pain.
  • This medicine may cause you to be dehydrated or have electrolyte problems. Rarely, this may be very bad or deadly. Tell your doctor right away if you get very dizzy, pass out, feel very tired or weak, or have a fast heartbeat, a heartbeat that does not feel normal, or seizures. Tell your doctor right away if you have headache, mood changes, confusion, muscle pain or weakness, more thirst, not hungry, dry mouth, dry eyes, very bad upset stomach or throwing up, if you are unable to pass urine, or if you have a change in the amount of urine produced.

What are some other side effects of TriLyte?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

  • Anal irritation.
  • Bloating.
  • Feeling full.
  • Upset stomach or throwing up.
  • Stomach cramps.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects at

See also: Side effects (in more detail)

If OVERDOSE is suspected:

If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

How do I store and/or throw out TriLyte?

  • Store powder at room temperature.
  • After mixing, store in a refrigerator. Check with the doctor or pharmacist if you have questions about how long TriLyte (polyethylene glycol-electrolyte solution) may be used after mixing.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.

Consumer Information Use and Disclaimer

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else's drugs.
  • Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
  • Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
  • Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about TriLyte (polyethylene glycol-electrolyte solution), please talk with your doctor, nurse, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

Disclaimer: This information should not be used to decide whether or not to take TriLyte (polyethylene glycol-electrolyte solution) or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about TriLyte (polyethylene glycol-electrolyte solution). It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to TriLyte (polyethylene glycol-electrolyte solution). This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using TriLyte (polyethylene glycol-electrolyte solution).

Review Date: February 7, 2018