Pharmacologic Substance
propylene glycol Audio
pro·pyl·ene gly·col
Brand Names:
Ocusan Dry Eyes; Soothe Lubricant Eye Drops; Systane; Systane Balance; Systane Complete
May Treat:
Dry Eye Syndromes
More Information:
ChemID; DrugBank; DailyMed; PDR
Definitions related to propylene glycol:
  • A clear, colorless, viscous organic solvent and diluent used in pharmaceutical preparations.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • A propanediol that exists as a clear, colorless and hygroscopic liquid and consists of propane where the hydrogens at positions 1 and 2 are substituted by hydroxyl groups. Propylene glycol is used as an organic solvent and diluent in pharmaceuticals and many other industrial applications.
    NCI
    U.S. National Cancer Institute, 2021
  • Clear, colorless, viscous organic solvent and diluent used in pharmaceutical preparations.
    CRISP Thesaurus
    National Institutes of Health, 2006
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.