Golytely

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Golytely

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Medically reviewed

Marina Burgos

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Golytely

Property Description
Active Ingredients Macrogol 3350, Potassium Chloride, Sodium Bicarbonate, Sodium Chloride, Sodium Sulfate Anhydrous
Form Powder for Oral Solution
Pharmacological Class Osmotic Laxative, Bowel Cleansing Agent
General Purpose Preparation for diagnostic colon examination
Origin Synthetic Polymer and Mineral Salts

GoLYTELY is a highly specific prescription pharmaceutical preparation that is primarily classified as an osmotic laxative and a bowel cleansing agent. It is one of several recognized Polyethylene Glycol and Electrolytes combination products clinically recognized for achieving comprehensive bowel clearance. GoLYTELY is specifically engineered for complete and rapid cleansing of the colon, a process often referred to as gastrointestinal lavage, required before a diagnostic procedure like a colonoscopy.

GoLYTELY Composition and Dosage Form

The core active ingredient in GoLYTELY is the inert, nonabsorbable polymer Macrogol 3350 (Polyethylene Glycol 3350) combined with four essential electrolyte salts: Sodium Chloride, Potassium Chloride, Sodium Bicarbonate, and Sodium Sulfate Anhydrous. The presence of these salts is a distinctive feature, enabling the solution to function safely during high-volume evacuation. The drug is supplied as a large-volume powder for oral solution and is administered via the oral route. This specific combination product creates an isosmotic solution upon reconstitution, a property that minimizes osmotic disturbances and prevents significant fluid or mineral shifts in the body.

Differentiation and General Benefit of GoLYTELY

GoLYTELY's formulation is a recognized standard within the class of high-volume bowel preparations, often used interchangeably with other brands containing the same Macrogol/electrolyte composition. The general benefit of this specific formulation is its ability to reliably ensure a complete and thorough cleanse of the entire colon. Because the Macrogol 3350 component is non-absorbed by the body, its action is purely localized within the digestive tract, resulting in a physically effective evacuation of all contents necessary to provide the physician with an unobstructed view.

Regulatory References

  1. DailyMed

What side effects are possible with Golytely?

Possible side effects and safety information

The safety profile for GoLYTELY (Polyethylene Glycol 3350 with Electrolytes) is structured around official regulatory classifications that describe the expected and potential adverse reactions. The most frequently documented adverse reactions are related to the gastrointestinal system, consistent with the product's function as a high-volume bowel cleansing agent.

Official Adverse Reaction Classifications

Classification Category Officially Listed Examples
Very Common / Common Reactions Nausea, abdominal fullness, abdominal bloating, abdominal cramps, vomiting.
System-Organ Classes Involved Gastrointestinal Disorders, Metabolism and Nutrition Disorders, Immune System Disorders.

Serious Safety Considerations

The official labeling documents rare but clinically significant systemic risks. Serious adverse reactions include fluid and electrolyte abnormalities that may lead to severe events such as cardiac arrhythmias or seizures. Less common but documented serious reactions also include severe hypersensitivity reactions (e.g., anaphylaxis and angioedema) and rare reports of ischemic colitis or upper gastrointestinal mucosal injury.

Safety Restrictions and At-Risk Populations

GoLYTELY is contraindicated and must not be used in individuals with conditions such as known or suspected gastrointestinal obstruction, bowel perforation, toxic colitis, toxic megacolon, or ileus. Caution is advised for specific populations, including those with pre-existing renal impairment, a history of seizures, or conditions that predispose them to aspiration, as these groups may be at a higher risk of serious adverse reactions. The rapid intestinal transit caused by the preparation may also result in the reduced absorption of concomitant oral medications.

Overdose and Emergency Response

Overdose and When to Seek Help

The information below is strictly based on official government regulatory documents detailing overdose manifestations and required emergency actions for Polyethylene Glycol 3350 and Electrolytes (GoLYTELY).

An overdose or excessive ingestion of the diluted solution is primarily characterized by severe diarrhea, which may lead to significant dehydration and potentially hypovolemic shock.

Severe Overdose Outcomes
Overdose can result in electrolyte abnormalities (e.g., hyponatremia, hypokalemia) leading to serious adverse events.
Documented severe outcomes include generalized seizures and cardiac arrhythmias (such as asystole), particularly in patients with pre-existing risk factors.
The official label also warns of the risk of aspiration pneumonia or pulmonary edema from vomiting, especially in patients with impaired swallowing.

Official Emergency Actions

Seek immediate emergency medical attention or call a Poison Help line in the event of a known overdose or if symptoms of a serious hypersensitivity reaction (e.g., anaphylaxis, hives) occur.

Management described in regulatory documents involves supportive measures, specifically the correction of fluid and electrolyte abnormalities and subsequent rehydration of the patient. If significant vomiting or dehydration occurs, post-procedure lab tests (electrolytes, creatinine, and BUN) should be considered and the patient treated accordingly. No specific antidote is mentioned in the official labeling.

Population Considerations

The elderly and patients with renal impairment are considered at increased risk for serious adverse reactions and associated complications from fluid/electrolyte disturbances. Close clinical observation and potential laboratory monitoring are advised by regulators for these at-risk groups.

Therapeutic Uses of Golytely

Main Uses of Golytely

Golytely is a prescription polyethylene glycol (PEG) electrolyte solution primarily used for bowel cleansing. Its main application is to prepare the gastrointestinal tract for diagnostic procedures or surgical interventions that require the colon to be empty and clearly visible.

Colonoscopy Preparation

The most common use for Golytely is as a bowel prep before a colonoscopy. By inducing a high volume of liquid bowel movements, the solution clears out fecal matter and debris. This process is essential for providing the physician with an unobstructed view of the intestinal lining, which allows for the accurate detection of polyps, tumors, or inflammation.

Other Diagnostic Procedures

Beyond colonoscopies, Golytely is used to prepare the bowel for other imaging and diagnostic tests, such as:

  • Barium Enemas: To ensure that the contrast material can coat the intestinal walls evenly without interference from waste.
  • Virtual Colonoscopies (CT Colonography): To provide clear radiographic images of the colon.

Surgical Preparation

In certain cases, surgeons may require a patient to undergo bowel cleansing with Golytely before colorectal surgery. An empty bowel can help reduce the risk of infection and facilitate better access to the surgical site.


Primary Benefits

Thorough Cleansing

Golytely is recognized for its ability to provide a comprehensive and rapid cleansing of the entire colon. This reduces the likelihood of a "poor prep," which can lead to missed findings or the need to repeat the procedure.

Electrolyte Balance

Unlike some simpler laxatives, Golytely contains a specific balance of electrolytes (sodium, potassium, and bicarbonate). The inclusion of these salts is intended to minimize the exchange of water and electrolytes across the intestinal wall, helping to maintain the body's fluid balance during the cleansing process.

Non-Absorbable Action

The polyethylene glycol in the solution is a non-absorbable osmotic agent. It works by retaining the water administered with it inside the colon, rather than being absorbed into the bloodstream, which facilitates the flushing effect necessary for a successful examination.

Eligibility and Restrictions for Use

The eligibility for using GoLYTELY is strictly defined by regulatory documents, distinguishing between approved populations, absolute contraindications, and groups requiring conditional use. The medicine is officially indicated for bowel cleansing procedures in adults.

Contraindications: Who Must Not Use

GoLYTELY is formally contraindicated and must not be used by patients diagnosed with or suspected of having specific acute gastrointestinal disorders, including GI obstruction, bowel perforation, ileus, gastric retention, toxic colitis, or toxic megacolon. Use is also prohibited in individuals with known hypersensitivity to any component of the formulation.

Conditional Use and Population Restrictions

Age Group Regulatory Status
Pediatric Use Safety and effectiveness have not been established in children.
Geriatric Use Requires caution; adverse reactions have been noted in patients over 60 years of age.

Use requires special caution and monitoring for patients with impaired renal function, cardiac arrhythmias, a history of seizures, or severe ulcerative colitis. For women who are pregnant, the medicine is classified as Pregnancy Category C and should be given only if clearly needed.

What should I know about interactions with other medicines?

Interactions with other medicines and products

GoLYTELY's official interaction profile, as documented in government regulatory labeling, is based on two primary effects: the rapid purging action on the gastrointestinal tract and the potential for cumulative electrolyte changes.

Classification Interacting Agents (Classes or Products)
Reduced Absorption Risk All Oral Medications (General)
Additive Fluid Risk Diuretics, ACE Inhibitors, ARBs, NSAIDs
Additive Safety Risk Stimulant Laxatives, Seizure Threshold-Lowering Drugs

Pharmacokinetic Interference and Timing Restrictions

Administration of this preparation may cause a pharmacokinetic interaction leading to the reduced absorption of orally administered medications due to the rapid transit of intestinal contents. To mitigate this effect, official guidelines state that oral medications should not be taken within one hour before the start of GoLYTELY administration or throughout the preparation process.

Pharmacodynamic and Combination Cautions

Co-administration with other medicines that affect fluid or electrolyte balance, such as diuretics, ACE inhibitors, ARBs, or NSAIDs, carries an officially documented additive risk of fluid and electrolyte abnormalities. This additive risk profile extends to drugs that lower the seizure threshold. Furthermore, the use of other laxatives is explicitly prohibited during administration. The final regulatory constraint notes that the preparation's component, Macrogol, physically interacts with starch-based food thickeners, causing a loss of viscosity that may be a concern for patients with swallowing difficulties.

Mechanism of Action

The mechanism of GoLYTELY is entirely physicochemical and does not involve interaction with classical cellular targets like receptors or enzymes. Its action is confined to the gastrointestinal lumen, utilizing osmotic pressure. ### Osmotic Fluid Retention and Mechanical ActionThis domain covers how the inert polymer Macrogol 3350 physically retains the ingested water volume through hydrogen bonding, establishing a strong osmotic gradient. This retained fluid increases the luminal volume, causing mechanical distension of the colon wall. This distension reflexively initiates vigorous peristalsis, resulting in rapid, voluminous evacuation of intestinal contents.### ️ Isosmotic Electrolyte Balance and Systemic SafetyThe electrolyte salts create an isosmotic solution that maintains balance against the body's plasma. This mechanism ensures the high fluid volume remains localized and maintains a net-zero exchange of fluid and ions across the intestinal membrane.### ️ Mechanism Limitation: Dependence on Physical TransitThe osmotic cleansing mechanism is constrained by the requirement for an open, functional pathway. It is entirely reliant on the physical transit of the large fluid volume and is therefore physiologically constrained in contexts where gastrointestinal obstruction prevents the fluid load's movement.

Dosage and Administration Information

How GoLYTELY is Administered

GoLYTELY (Polyethylene Glycol 3350 and Electrolytes) is prescribed specifically as a powder for oral solution, and the oral route is the indicated administration method. The formulation is prepared for acute, short-term use, typically preceding a diagnostic procedure like a colonoscopy. The process is highly structured to ensure complete bowel evacuation.

Dosage and Consumption Pattern

The standard adult dose requires the consumption of the entire 4-liter volume of the solution after the powder is fully reconstituted with water to the marked line. There are two primary ways this dose may be administered:

  1. Split-Dose Regimen: Dividing the total 4-liter volume, often with the first portion consumed the evening before the procedure and the second portion consumed the following morning.
  2. One-Day Regimen: Consuming the entire volume on the afternoon and evening before the procedure.

Consumption must be paced at a regulated rate, such as 240 mL (8 ounces) every 10 minutes, to facilitate the required rapid intestinal lavage.

Contextual Requirements for Administration

Administration Specific Requirement
Preparation Powder must be completely dissolved in water up to the 4-liter fill line.
Timing No solid food is permitted during or after the start of administration.
Completion The entire dose must be consumed and evacuation largely completed at least 3 hours prior to the scheduled procedure.

The standard protocol requires close adherence to the specified consumption schedule and volume, defining the structured approach to preparation.

Recent Clinical Evidence

Evidence for Use in Diagnostic Bowel Cleansing

The primary research for GoLYTELY, which contains Polyethylene Glycol (PEG) 3350 with electrolytes, examined whether the preparation can achieve the conditions required for diagnostic procedures, such as a colonoscopy. These evaluations primarily took the form of Randomized Controlled Trials (RCTs). Researchers monitored outcomes related to cleansing quality using standardized clinical assessment scales and explored patient experience by measuring patient-reported outcomes describing perceived discomfort. The evidence contributes to understanding symptom patterns observed during the rapid cleansing phase.


Comparative Research with Other Preparation Methods

Research has also explored differences between the full 4-liter solution and other available bowel cleansing methods. Studies monitored outcomes related to physical discomfort and overall cleansing assessment across different groups. While some studies described comparable results in cleansing assessments, findings were mixed regarding patient experience. Data show patterns related to reduced patient tolerance and compliance rates specifically linked to the high volume requirement of this regimen.


Evidence in Specific Patient Groups

GoLYTELY was evaluated in specific patient groups, including older adults and patients with certain pre-existing medical conditions (comorbidities). For these groups, studies monitored outcomes related to systemic or functional imbalance, such as shifts in blood serum electrolytes, during the rapid fluid exchange. Research provides insight into short-term changes in these markers across the observed populations. However, data for certain groups remain insufficient to draw wide-ranging conclusions.


Follow-up and Research Duration

The primary research focuses heavily on the acute, immediate pre-procedural period. Follow-up durations were limited in most core trials, concentrating on the time required to complete the preparation. Short-term monitoring, typically extending up to 30 days post-procedure, was observed in some studies to track changes in physiological markers following the procedure. There is limited information for long-term outcomes, as the duration of observation in the foundational studies was limited to the acute need for cleansing.


Key Limitations and Research Gaps

The research base highlights several factors that frame the overall understanding of this preparation. One major limitation documented in the research is the high volume of fluid required for the traditional regimen. This requirement was associated with patterns of reduced patient compliance and increased challenges with tolerability. Subgroup findings are uncertain in many areas, meaning research does not determine whether an individual will respond similarly to the reported group results.

Key Studies & References

  1. GOLYTELY - peg-3350 and electrolytes powder, for solution (Product Information)
  2. Comparative Efficacy of 2 L Polyethylene Glycol Alone or With Ascorbic Acid vs. 4 L Polyethylene Glycol for Colonoscopy: A Systematic Review and Network Meta-Analysis of 12 Randomized Controlled Trials
  3. Bowel preparation for colonoscopy: European Society of Gastrointestinal Endoscopy (ESGE) Guideline - Update 2019

Frequently Asked Questions (FAQ)

Common questions about Golytely (FAQ)

Q: How long does it usually take for Golytely to start working after the first dose?

A: According to official administration instructions, the preparation is designed to work quickly. A loose, watery bowel movement should generally be expected approximately one hour after the start of consuming the solution.

Q: Is it normal to feel bloated or nauseous while drinking Golytely?

A: Regulatory documents list nausea, abdominal fullness, and bloating as very common adverse reactions associated with this preparation, occurring in up to 50% of patients. These reactions are described in official documents as transient, meaning they are temporary.

Q: How long do the effects of Golytely typically last?

A: The preparation is designed to rapidly cleanse the bowel. The induced diarrhea usually resolves within a few hours of administration, and official instructions require the cleansing process to be largely completed at least three hours before the scheduled procedure.

Q: Does Golytely interact with common over-the-counter pain relievers?

A: The rapid intestinal transit caused by this preparation may reduce the absorption of any orally administered medication, including pain relievers, taken within one hour of starting the solution. Official warnings specifically note that combining the preparation with Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) carries an additive risk for fluid or electrolyte abnormalities.

Q: Are there any known interactions between Golytely and supplements like vitamins or herbs?

A: The official documentation states that the administration of this preparation may cause reduced absorption of all orally administered medications, which includes supplements, due to the rapid movement of intestinal contents.

Q: Does taking Golytely impact the absorption of birth control pills?

A: As with any oral medication, the regulatory document states that birth control pills administered within one hour of starting the preparation may not be absorbed effectively. This is due to the rapid movement of intestinal contents that the solution is designed to induce.

Q: What research has been done on the long-term effects of Golytely?

A: The primary research for this preparation focuses heavily on the acute, immediate pre-procedural period required for cleansing. Follow-up durations in the foundational studies were limited, concentrating on the time required to complete the preparation. Therefore, limited information is available on long-term outcomes of using the solution.

Q: Can older adults use Golytely safely, based on official recommendations?

A: Official information advises caution for patients over 60 years of age. This caution is based on documented reports of serious adverse reactions, particularly fluid and electrolyte abnormalities, that have been noted in this older population.

Q: Does Golytely cause dehydration?

A: The solution is engineered to be isosmotic, meaning the concentration of electrolytes helps maintain the body's fluid and mineral balance during the cleansing process. While this aims to prevent significant fluid shifts, the label still encourages adequate hydration and warns that fluid and electrolyte abnormalities are a risk.

Q: What is the main difference between Golytely and other laxatives?

A: GoLYTELY is specifically indicated for complete bowel cleansing prior to diagnostic procedures, unlike many laxatives used for occasional constipation. It is a high-volume polyethylene glycol and electrolyte solution designed to induce rapid, complete, and voluminous evacuation while its isosmotic nature helps maintain the body’s electrolyte balance during the high fluid exchange.

Q: Can Golytely be used for regular constipation, or is it only for cleansing?

A: GoLYTELY is officially indicated for bowel cleansing prior to colonoscopy and barium enema X-ray examination in adults. Use for chronic or regular constipation is not specified within the scope of its official regulatory indications.

Q: Are there different flavors of Golytely, and does the flavor change the effect?

A: Official preparation instructions state, 'Do not add any other ingredients, flavors, etc.' to the solution. The approved method requires only the powder reconstituted with water, as per regulatory instructions.

Q: Can taking Golytely affect the results of other medical tests?

A: Official labeling advises that fluid and electrolyte abnormalities may occur in some patients. For those at higher risk, such as individuals with impaired kidney function, laboratory tests (like electrolytes and kidney function markers) are advised to assess these changes.

Q: What should be in the 'clear liquid diet' people mention when taking Golytely?

A: The official administration instructions require a clear liquid diet during the preparation process. This means only water or other clear liquids should be consumed, and patients are explicitly instructed to avoid red and purple liquids.

Q: Does Golytely contain any sugar or sweeteners?

A: The core active ingredients are Macrogol 3350 and various electrolyte salts. The preparation instructions explicitly prohibit adding any other ingredients, flavors, or sweeteners. Some formulations may contain a form of phenylalanine.

Q: Can Golytely be used by people with diabetes?

A: The official labeling does not specifically list diabetes as a contraindication. However, the labeling warns of the risk of fluid and electrolyte abnormalities, which can be a concern for individuals with underlying medical conditions.

Q: Is it safe to drink Golytely if I have high blood pressure?

A: Official labeling advises caution if a patient is taking medications that affect fluid or electrolyte balance, such as certain common high blood pressure medicines (like ACE inhibitors, ARBs, or diuretics). Combining these carries an officially documented additive risk for fluid and electrolyte abnormalities.

Q: What happens if I don't finish drinking all of the Golytely solution?

A: The standard adult dose requires the consumption of the entire 4-liter volume of the solution. Failure to consume the entire dose may compromise the intended goal of complete bowel evacuation necessary for the diagnostic procedure.

Q: Is it possible to have an allergic reaction to Golytely?

A: Official documents state that the preparation is contraindicated for individuals with a known hypersensitivity to any of its components. Additionally, severe hypersensitivity reactions, including anaphylaxis (a severe allergic reaction), have been reported.

Q: Can I mix Golytely with something other than water to improve the taste?

A: No, official preparation instructions strictly state, 'Do not add any other ingredients, flavors, etc.' to the powder. It must be completely dissolved in water to ensure the solution works as intended.

Q: Why do official documents mention 'bowel obstruction' as a concern with Golytely?

A: Bowel obstruction is a formal contraindication because the preparation’s mechanism relies on the physical transit of a large volume of fluid. If the bowel is blocked, the fluid cannot pass and may lead to serious complications, such as perforation or aspiration.

Q: Is Golytely considered a high-volume or low-volume preparation?

A: GoLYTELY, which requires the consumption of a 4-liter volume of solution, is generally recognized as a high-volume preparation within the class of bowel cleansing agents.

Q: What is the role of Golytely in treating certain types of poisoning?

A: The official indication for GoLYTELY is strictly for bowel cleansing prior to colon examination. Use for other clinical purposes is not included in the official indications.

Q: Does Golytely interact with blood thinning medications?

A: The product label warns that all oral medications, including blood thinners, may have reduced absorption if taken within one hour of the solution due to rapid intestinal transit. The preparation also carries a risk of fluid and electrolyte changes that may be a concern when combined with certain medications.

Q: Is a metallic taste common after drinking Golytely?

A: The solution is described as having a mildly salty taste when reconstituted. The most frequently reported adverse reactions are nausea, abdominal fullness, and bloating; metallic taste is not listed in official documents as one of the commonly reported side effects.

Q: Why does the solution need to be chilled, according to many users?

A: Official administration instructions note that the solution 'is more palatable if chilled prior to administration.' Furthermore, official storage requirements mandate that the reconstituted solution must be stored under refrigeration and used within 48 hours.

Q: Is Golytely used in hospital settings for purposes other than colonoscopy?

A: The official indication is for bowel cleansing prior to colonoscopy and barium enema X-ray examination in adults. Use for other clinical purposes is not included in the official indications.

Q: Are there any known interactions with mood stabilizers or psychiatric medications?

A: Caution is advised for patients taking any medications that lower the seizure threshold. This includes certain psychiatric medications, as the risk of fluid and electrolyte abnormalities caused by the preparation could potentially lead to seizures.

Q: Can Golytely be used if someone has kidney issues?

A: Official labeling advises caution for patients with impaired kidney function. For these patients, official guidelines advise that laboratory tests to assess electrolyte levels and kidney function should be considered before and after the use of the preparation.

How should Golytely be stored and disposed of?

Storage and Disposal Requirements for GoLYTELY

The official storage conditions for GoLYTELY powder and the reconstituted solution are distinct and time-sensitive.

Storage Requirements

Product Form Required Storage Condition Temperature Range
Unreconstituted Powder Controlled Room Temperature 59 F to 86 F (15 C to 30 C)
Reconstituted Solution Refrigerated 36 F to 46 F (2 C to 8 C)

The powder must be kept in its original sealed container and protected from moisture and direct light. The mixed solution must not be frozen.

Stability and Disposal

The entire reconstituted solution is only stable and should be used within 48 hours of mixing. Any unused solution remaining after this 48-hour period must be discarded (thrown away). As with all medications, GoLYTELY must be stored out of the reach of children.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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