Polyethylene Glycol 3350: uses, dosing, side effects & brands
Polyethylene Glycol 3350 is a medicine sold in the U.S. under 2 brand and generic names. Below: what the FDA label says, every product that contains it, what the pills look like, and its recall record.
Key facts
- Available as
- Powder
- Sold as
- 2 products — Polyethylene Glycol 3350 and Miralax
- Prescription?
- Prescription only
- Generic available?
- Yes
- What the pharmacy pays
- about $1 per gm — not your price
Every polyethylene glycol 3350 product we track (2)
Same active ingredient — different manufacturer, form, price and FDA recall record. That last one is what our independent score measures.
| # | Drug | Rating | Type | Form | Generic? | Pharmacy pays | |
|---|---|---|---|---|---|---|---|
| 1 | 56/100 | Prescription | Solution | Generic | $1 | View → | |
| 2 | Not yet rated | Prescription | Solution | Generic | $1 | View → |
Combination products containing polyethylene glycol 3350
A combination is a different drug — different dosing, different warnings. It is listed here so you can find it, not so you can substitute it.
How long polyethylene glycol 3350 keeps
No polyethylene glycol 3350 label we read sets a separate limit for after opening, but they do specify how it must be stored — and the stability behind any date assumes those conditions.
Does polyethylene glycol 3350 expire? The in-use limits and storage rules from its labelsWhat people report to the FDA about polyethylene glycol 3350
The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 14,356 reports naming polyethylene glycol 3350, and the FDA flagged 60% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:
- incorrect product administration duration1,261 reports
- nausea1,162 reports
- diarrhoea1,052 reports
- constipation912 reports
- fatigue862 reports
- vomiting824 reports
- headache771 reports
- abdominal pain745 reports
Read these as a signal, not a rate. A report does not mean polyethylene glycol 3350 caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label section above.
Source: openFDA drug/event (FAERS), retrieved July 26, 2026.
Related calculators
Frequently asked questions
Can you take polyethylene glycol 3350 with other medicines?
It depends on the medicine. We check it against the FDA labels rather than guessing: our interaction checker searches each drug's own label for the other and quotes what it says, naming the section it came from. Run polyethylene glycol 3350 against whatever else you take — and remember that a label not naming a drug is not the same as that combination being safe.
What brand names is polyethylene glycol 3350 sold under?
We track 2 polyethylene glycol 3350-containing products in the U.S.: Polyethylene Glycol 3350 and Miralax. They are the same active ingredient; they differ in form, manufacturer, price and FDA recall record.
What forms does polyethylene glycol 3350 come in?
Across the brands we track, polyethylene glycol 3350 is currently marketed as powder, per the FDA's National Drug Code Directory. Each form is dosed differently — follow the label for the exact product you were prescribed.
Is there a generic polyethylene glycol 3350?
Yes. Our catalog lists 1 generic polyethylene glycol 3350 product alongside the brand versions. A generic has the same active ingredient and must meet the FDA's bioequivalence standard; it usually costs less. Ask your pharmacist which one your plan covers.
Cite this page
- APA
- pharmaranks. (2026, July 24). Polyethylene Glycol 3350: uses, dosing, side effects & brands. https://pharmaranks.com/drugs/polyethylene-glycol-3350
- MLA
- “Polyethylene Glycol 3350: uses, dosing, side effects & brands.” pharmaranks, 24 July 2026, https://pharmaranks.com/drugs/polyethylene-glycol-3350.
We summarise public FDA and NIH sources — for a clinical claim, cite the primary source we link to as well.
Sources: FDA openFDA drug label, National Drug Code Directory, and Enforcement (recall) database. This page reproduces public FDA data and is not medical advice. Dosing is set by your prescriber.
Read the full FDA label for polyethylene glycol 3350 on DailyMed (NIH) ↗.