Polyethylene glycol (PEG) is an over-the-counter medication used to treat occasional constipation. Understanding its correct dosage is important for safe and effective use.
What Polyethylene Glycol Is
Polyethylene glycol (PEG) is an osmotic laxative that draws water into the digestive tract. This softens stool and makes it easier to pass, promoting bowel movements without significant absorption into the bloodstream.
PEG is available without a prescription for temporary constipation relief. It is considered gentle and typically comes in powder form, which is mixed with liquid before consumption.
Standard Dosage Guidelines
For adults 17 and older experiencing occasional constipation, the recommended dosage is 17 grams of powder once daily. This amount should be thoroughly mixed and dissolved in 4 to 8 ounces of liquid, such as water, juice, or tea, then consumed. Always check the product label, as dosages can vary by brand.
PEG is intended for short-term use, typically up to 7 days. If constipation persists beyond this period, seek medical advice. Adult dosages are not appropriate for children; consult a healthcare professional for pediatric use, as specific guidelines exist.
Individual Dosage Considerations
Individual factors can influence PEG dosage. Elderly individuals may exhibit increased sensitivity to medications; a reduced dose (e.g., 8 grams daily) might be considered for ongoing use, particularly with decreased kidney function.
Existing medical conditions also play a role in dosage adjustments and safety. Individuals with kidney disease, inflammatory bowel disease, or certain heart conditions should use PEG with caution. It is important to consider potential interactions with other medications, as PEG can reduce the effectiveness of some drugs if taken within two hours of each other. Diuretics, for example, can increase the risk of dehydration and electrolyte imbalances when used concurrently with PEG.
Risks of Overdosing on PEG
Exceeding the recommended daily dosage of PEG can lead to adverse effects. Common symptoms include diarrhea, abdominal cramping, bloating, nausea, and increased gas. These gastrointestinal effects typically resolve once the medication is discontinued or the dose is adjusted.
More severe risks include dehydration and electrolyte imbalances, such as low sodium or potassium levels. These imbalances can be concerning for individuals with pre-existing kidney or heart conditions, or those taking diuretics. Worsening of underlying gastrointestinal conditions, such as bowel obstruction or ischemic colitis, can also occur. If symptoms like severe or bloody diarrhea, worsening abdominal pain, or rectal bleeding occur, stop using the medication and seek immediate medical attention.
Knowing When to Consult a Doctor
Consult a doctor if constipation persists after seven days of using PEG, or if symptoms worsen during treatment. Seek medical advice if severe side effects develop, such as intense abdominal pain, rectal bleeding, or signs of dehydration or electrolyte imbalance. These symptoms may indicate a more serious underlying condition.
For chronic constipation, relying solely on over-the-counter PEG is not recommended; consult a doctor for long-term management strategies. Medical guidance is necessary before administering PEG to children. If you have pre-existing medical conditions (e.g., kidney disease, heart problems, inflammatory bowel disease) or are taking other medications, discuss PEG use with a healthcare professional to ensure safety and prevent potential complications.