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Polyethylene Glycol 3350

Polyethylene Glycol 3350

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What is Polyethylene Glycol 3350?

Polyethylene Glycol 3350 is a medication used to treat occasional constipation. It helps soften stools and increase bowel movements, making it easier to pass.

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What is Polyethylene Glycol 3350 ?

Polyethylene Glycol 3350 is a medication used to treat occasional constipation. It helps soften stools and increase bowel movements, making it easier to pass.

  • Blood in stool, stomach cramps or pain, bloating, nausea, vomiting, diarrhea
  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
  • Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease or other stomach or bowel problems (including irritable bowel syndrome).
  • Call your doctor if your symptoms do not improve or if they get worse.
  • Keep all medicine out of the reach of children. Never share your medicine with anyone.
How long does it take for polyethylene glycol 3350 (MiraLAX) to work?

Polyethylene glycol 3350 usually produces a bowel movement within 1 to 3 days. It is a gentle osmotic laxative that works by drawing water into the stool, so it is not meant to act immediately.

Is polyethylene glycol 3350 the same as MiraLAX?

Yes. MiraLAX is a brand name for polyethylene glycol 3350, and store brands such as GlycoLax, ClearLax, GaviLAX, and Healthylax contain the same active ingredient. The generic and brand versions work the same way.

How many days in a row can you safely take polyethylene glycol 3350?

For over-the-counter self-treatment, do not use polyethylene glycol 3350 for more than 7 days unless a doctor directs you to. Prolonged or excessive use can lead to electrolyte imbalance and, rarely, dehydration. If constipation lasts longer, talk with your doctor.

What are the side effects of polyethylene glycol 3350?

Common side effects include bloating, gas, cramping, nausea, and loose or watery stools or diarrhea. Stop and consult a doctor if you have rectal bleeding, severe or worsening abdominal pain, or no bowel movement after use.

Can you use polyethylene glycol 3350 for a colonoscopy prep?

Polyethylene glycol 3350 is very commonly used off-label as a bowel-prep agent before a colonoscopy, often mixed with a sports drink. Only use it this way under your doctor's specific instructions, since bowel-prep dosing is different from routine constipation relief.

How much does Polyethylene Glycol 3350 510GM of 17GM/SCOOP cost without insurance?
The price of Polyethylene Glycol 3350 510GM of 17GM/SCOOP without insurance varies by pharmacy, dosage, and quantity. Rx.com compares cash prices at more than 60,000 US pharmacies so you can find the lowest price near you. Many people save 60–90% off retail prices with a free Rx.com coupon.
What are the common side effects of Polyethylene Glycol 3350 510GM of 17GM/SCOOP?
Common side effects of Polyethylene Glycol 3350 510GM of 17GM/SCOOP may include: Blood in stool, stomach cramps or pain, bloating, nausea, vomiting, diarrhea, Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing. This is not a complete list — consult your pharmacist or doctor for full side effect information.
Is there a generic version of Polyethylene Glycol 3350 510GM of 17GM/SCOOP?
Generic versions may be available for Polyethylene Glycol 3350 510GM of 17GM/SCOOP. Generics contain the same active ingredients as brand-name drugs and are typically 80–90% cheaper. Search Polyethylene Glycol 3350 510GM of 17GM/SCOOP on Rx.com to compare generic and brand prices at pharmacies near you.
What is the cheapest pharmacy for Polyethylene Glycol 3350 510GM of 17GM/SCOOP?
The cheapest pharmacy for Polyethylene Glycol 3350 510GM of 17GM/SCOOP depends on your location and dosage. Rx.com compares prices at CVS, Walgreens, Walmart, Kroger, Costco, and thousands of independent pharmacies. Enter your ZIP code on Rx.com to find the lowest price for Polyethylene Glycol 3350 510GM of 17GM/SCOOP near you.

Polyethylene Glycol 3350 Coupons & Prices

Polyethylene Glycol 3350

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Polyethylene Glycol 3350 500gm (1)
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Looking for a polyethylene glycol 3350 coupon? Polyethylene glycol 3350 is the active ingredient in MiraLAX and store brands like GlycoLax, ClearLax, GaviLAX, and Healthylax. It is an over-the-counter osmotic laxative used to relieve occasional constipation. Even though you can buy it without a prescription, some pharmacies price it lower when you use an Rx.com coupon or when your doctor writes it as a prescription. Enter your ZIP above to see today's price at pharmacies near you.

What is polyethylene glycol 3350 and how does it work?

Polyethylene glycol 3350 is an osmotic laxative that treats occasional constipation (irregularity). It works by holding water in the stool, which softens the stool and increases how often you have a bowel movement. It does not stimulate the bowel, so it usually works gently over 1 to 3 days rather than all at once. It is sold as a tasteless powder you dissolve in a drink. Polyethylene glycol 3350 was first approved as a prescription product in 1999 and switched to over-the-counter status in 2006.

The generic (polyethylene glycol 3350) and the brand MiraLAX contain the same active ingredient, so a generic or store brand works the same way as the brand name.

How to save on polyethylene glycol 3350 with an Rx.com coupon

Polyethylene glycol 3350 is available over the counter, and prices vary from store to store. Because it is also available as a low-cost generic and sold under many store brands, comparing options can save you money. Some pharmacies ring it up cheaper with an Rx.com discount coupon, and in some cases having your doctor write it as a prescription lets you use a coupon price at the pharmacy counter. There is no manufacturer copay savings card for this product.

To find the lowest price, enter your ZIP above to see today's price at pharmacies near you, then show the free Rx.com coupon to the pharmacist. The coupon works for both the brand and generic versions.

How it compares to other laxatives

Polyethylene glycol 3350 is an osmotic laxative, meaning it draws water into the stool. Other laxatives work in different ways, and the best choice depends on your situation and your doctor's advice:

  • Lactulose and magnesium citrate are other osmotic-type laxatives that pull water into the bowel.
  • Docusate is a stool softener that helps stool absorb water.
  • Senna and bisacodyl are stimulant laxatives that prompt the bowel to move.
  • Linaclotide is a prescription medicine for chronic constipation and IBS with constipation.

This is general information, not medical advice. Ask your pharmacist or doctor which option is right for you.

Safety, side effects, and when to call a doctor

Do not use polyethylene glycol 3350 if you have a known or suspected bowel obstruction (intestinal blockage) or an allergy to polyethylene glycol. For over-the-counter self-treatment, do not use it for more than 7 days unless your doctor tells you to. Prolonged or excessive use can cause electrolyte imbalance and, rarely, dehydration, acute kidney injury, or metabolic acidosis. Common side effects include bloating, gas, cramping, nausea, and loose or watery stools or diarrhea.

Stop using it and consult a doctor if you have rectal bleeding, severe or worsening abdominal pain, or no bowel movement after use. If you are pregnant or breastfeeding, talk with your clinician before use. There is no boxed warning. This information does not replace advice from your own healthcare provider.

Sources & accuracy

This Polyethylene Glycol 3350 information was written and reviewed against authoritative U.S. medical sources — MedlinePlus (U.S. National Library of Medicine), DailyMed, and FDA prescribing information — and checked for accuracy. It is provided for education and is not a substitute for professional medical advice.

Verify the official label: Polyethylene Glycol 3350 on DailyMed (FDA)

Reviewed against FDA labeling · Last reviewed July 2026

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Medical disclaimer: This information is provided for general educational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a licensed physician, pharmacist, or other qualified healthcare provider before starting, stopping, or changing any medication or treatment. Never disregard professional medical advice or delay seeking it because of something you read here. If you think you may have a medical emergency, call your doctor or 911 immediately.


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