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NuLYTELY with Flavor Packs

Generic name: polyethylene glycol electrolyte solution

Brand names: GaviLyte-C With Lemon Flavor Pack, GaviLyte-G With Lemon Flavor Pack, GaviLyte-N With Flavor Packs, GoLYTELY, MoviPrep, PEG-3350 with Electrolytes (Eqv-GoLYTELY), PEG-3350 with Electrolytes (Eqv-Moviprep), PEG-3350 with Electrolytes Lemon (Eqv-GoLYTELY), PEG-3350 with Electrolytes Lemon (Eqv-Moviprep), PEG-3350 with Electrolytes Lemon (Eqv-NuLYTELY), PEG-3350 with Electrolytes Lemon-Lime (Eqv-NuLYTELY), PEG-3350 with Electrolytes Orange (Eqv-GoLYTELY), Plenvu, Suflave, Colyte with Flavor Packs,

Used for colonoscopy
Last updated November 3, 2026 0 views
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What is NuLYTELY with Flavor Packs?

NuLYTELY with Flavor Packs is a laxative solution that helps trigger bowel movements. It also has minerals to replace electrolytes lost in the stool.

NuLYTELY with Flavor Packs is used to prepare the bowel for a colonoscopy, a barium x-ray, or other intestinal procedures.

NuLYTELY with Flavor Packs may also be used for reasons not mentioned in this medication guide.

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How should I take NuLYTELY with Flavor Packs?

Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.

Polyethylene glycol electrolyte powder must be mixed with water into a solution before using it. Do not add any flavorings such as sugar, honey, artificial sweetener, fruit juices, or other beverages.

Shake the mixture well just before you measure a dose. Drink NuLYTELY with Flavor Packs in the exact portions at the exact time intervals prescribed by your doctor.

This medicine comes with instructions about when and what to eat or drink on your first day of treatment. Each brand may have different instructions.

Do not drink NuLYTELY with Flavor Packs if it has been less than 1 hour since you last ate solid food. For best results, take the medicine 2 to 4 hours after you last ate.

The first watery stool should appear within 1 hour after you start drinking NuLYTELY with Flavor Packs. Keep taking the medicine until you have completed all doses prescribed by your doctor.

Drink plenty of clear liquids (water, broth, black coffee, tea, clear soda) before, during, and after you take this medicine. Avoid foods and beverages that contain pulp or are red or purple in color. You may also eat popsicles (not fruit bars or fudge bars) or gelatin without fruit pieces or toppings.

Do not eat or drink anything within 2 hours before your colonoscopy or other medical test.

Store the unmixed powder at room temperature away from moisture and heat.

Store the mixed solution in a refrigerator in an upright position.

Throw away any NuLYTELY with Flavor Packs you have not used within 24 to 48 hours after it was mixed (follow directions for your specific brand of this medicine).

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Warnings

Do not use NuLYTELY with Flavor Packs if you have a perforated bowel, a bowel obstruction, severe constipation, colitis, or toxic megacolon. NuLYTELY with Flavor Packs can cause serious or life-threatening side effects in people with these conditions.

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Before taking this medicine

You should not use this medicine if you are allergic to polyethylene glycol or any other electrolyte solutions (like Pedialyte or Gatorade), or if you have:

  • a perforated bowel;
  • a bowel obstruction or severe constipation; or
  • colitis or toxic megacolon.

NuLYTELY with Flavor Packs can cause dangerous or life-threatening side effects in people with these conditions.

People with eating disorders (like anorexia or bulimia) should not use this medicine without a doctor's advice.

Tell your doctor if you have ever had:

  • heart problems or a heart attack;
  • an electrolyte imbalance (like low levels of potassium or sodium in your blood);
  • kidney disease;
  • a seizure;
  • gastroesophageal reflux disease (GERD), ulcerative colitis, or other stomach or bowel disorder;
  • trouble swallowing, aspiration (accidentally inhaling food or drink);
  • a genetic enzyme deficiency called glucose-6-phosphate dehydrogenase (G6PD) deficiency; or
  • a drug or alcohol addiction.

Tell your doctor if you are pregnant or breast-feeding.

This medicine may contain phenylalanine. Talk to your doctor before using if you have phenylketonuria (PKU).

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NuLYTELY with Flavor Packs side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

NuLYTELY with Flavor Packs may cause serious side effects. Call your doctor right away if you have:

  • no bowel movement within 2 hours after use;
  • vomiting;
  • dizziness, feeling faint;
  • little or no urination;
  • a seizure; or
  • signs of an electrolyte imbalance--increased thirst or urination, dry mouth, confusion, constipation, muscle pain or weakness, leg cramps, irregular heartbeats, or a tingling sensation.

You may need to drink the liquid more slowly, or stop using it for a short time if you experience certain side effects. Call your doctor for instructions if you have:

  • gagging, choking, severe stomach pain or bloating;
  • nausea, vomiting, headache, trouble drinking liquids, or little or no urinating; or
  • fever, sudden or severe stomach pain, severe diarrhea, rectal bleeding, or bright red bowel movements.

Common side effects of NuLYTELY with Flavor Packs may include:

  • vomiting, stomach pain, indigestion, or bloating;
  • rectal pain or irritation;
  • hunger, thirst, or mild nausea;
  • trouble sleeping; or
  • dizziness or chills.

This is not a complete list of side effects, and others may occur. Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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What happens if I miss a dose?

Talk to your doctor if you cannot drink all of the solution prescribed for you. Your test or procedure may need to be rescheduled if your bowel is not completely cleaned out.

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What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Avoid taking other medications, vitamins, or mineral supplements within 1 hour before drinking NuLYTELY with Flavor Packs. A bowel cleansing can make it harder for your body to absorb other medicines you take by mouth.

Do not use other laxatives while using NuLYTELY with Flavor Packs unless your doctor has told you to.

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What other drugs will affect NuLYTELY with Flavor Packs?

Tell your doctor about all your other medicines, especially:

  • heart or blood pressure medication;
  • a diuretic or "water pill";
  • medicine to treat anxiety, depression, or mental illness;
  • medications to treat kidney problems or low sodium levels (hyponatremia);
  • seizure medication; or
  • NSAIDs (nonsteroidal anti-inflammatory drugs)--aspirin, ibuprofen (Advil, Motrin), naproxen (Aleve), celecoxib, diclofenac, indomethacin, meloxicam, and others.

This list is not complete. Other drugs may affect NuLYTELY with Flavor Packs, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.

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Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
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Content is provided for education and is not medical advice. See our medical disclaimer.