Polyethylene Glycol 1450
Excipient (pharmacologically inactive substance)
Medically reviewed by Drugs.com. Last updated on April 6, 2021.
What is it?
Polyethylene glycol, referred to as PEG, is used as an inactive ingredient in the pharmaceutical industry as a solvent, plasticizer, surfactant, ointment 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%.
Top Medications with this excipient
- Acetaminophen 80 mg
- Carbamazepine Extended-Release 200 mg
- Carbamazepine Extended-Release 300 mg
- Carbamazepine Extended-Release 100 mg
- Lybrel ethinyl estradiol 0.02 mg / levonorgestrel 0.09 mg
 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
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