Polyethylene Glycol 3350
Excipient (pharmacologically inactive substance)
What is it?
Polyethylene glycol, referred to as PEG, is used as an inactive ingredient in the pharmaceutical industry as a solvent, plasticizer, surfactant, ointments, and suppository base, and tablet and capsule lubricant. PEG has low toxicity with systemic absorption less than 0.5%.
PEGylation occurs when PEGs are attached to various protein medications, allowing for greater solubility for certain drugs. Examples of PEGylated medications include PEG-interferon alpha (Pegintron) and PEG-filgrastim (Neulasta). PEG is also available as a bowel prep for colonoscopy procedures and as a laxative.
PEG 400 indicates the average molecular weight of the specific PEG at 400. PEG 3350 is a laxative available over-the-counter by the name of Miralax. In this case, PEG is considered an "active" ingredient, even though systemic absorption is less than 0.5%.
 Dave RH. Overview of pharmaceutical excipients used in tablets and capsules. Drug Topics (online). Advanstar. 10/24/2008 http://drugtopics.modernmedicine.com/drugtopics/Top+News/Overview-of-pharmaceutical-excipients-used-in-tabl/ArticleStandard/Article/detail/561047. Accessed 08/19/2011
Top Medications with this excipient
- Amoxicillin Trihydrate 875 mg
- Azor 10 mg / 20 mg
- Cetirizine Hydrochloride 10 mg
- Hydroxychloroquine Sulfate 200 mg
- Hydroxyzine Hydrochloride 25 mg
- Hydroxyzine Hydrochloride 50 mg
- Hydroxyzine Hydrochloride 10 mg
- Janumet XR metformin extended-release 1000 mg and sitagliptin 50 mg
- Juvisync simvastatin 40 mg / sitagliptin 50 mg
- Levetiracetam 1000 mg
- Levetiracetam 250 mg
- Levetiracetam Extended Release 750 mg
- Losartan Potassium 50 mg
- Minocycline Hydrochloride Extended-Release 90 mg
- Montelukast Sodium 10 mg (base)
- Prezista 600 mg
- Rosiglitazone Maleate 2 mg (base)
- Sildenafil Citrate 20 mg (base)
- Spironolactone Hydrochloride 100 mg
- Sumatriptan Succinate 50 mg