Propylene Glycol

Propylene Glycol in Medications

Propylene Glycol: A Solvent and Humectant

Propylene glycol is a clear, odorless liquid used in pharmaceuticals as a solvent and moisture-retaining agent. It can help dissolve certain ingredients and maintain consistent texture.

What Is Propylene Glycol?

Propylene glycol is a clear, odorless liquid used in pharmaceuticals as a solvent and moisture-retaining agent. It can help dissolve certain ingredients and maintain consistent texture.

Why Is Propylene Glycol Used in Medications?

Propylene Glycol is used because it:

  • Helps dissolve active or inactive ingredients (solvent)
  • Prevents drying and supports moisture balance (humectant)
  • Improves uniform mixing in liquids and topical products

Ingredient Names to Look For

Propylene Glycol may be listed as:

  • Propylene glycol
  • 1,2-propanediol

Where Does Propylene Glycol Appear?

It is commonly found in:

  • Oral solutions and syrups
  • Topical creams, gels, and lotions
  • Some injectable formulations

How to Check a Medication’s Ingredient List

Inactive ingredients may vary between manufacturers, dosage forms, and strengths.

Use PillParser to scan a medication and view its ingredient list.





Adding the manufacturer filters generics (fillers/dyes often differ).

To keep PillParser free, anonymous scans are limited.

Understanding ingredient differences is especially important for individuals with known sensitivities. RxAllergyScan.com allows users to compare medication ingredients against their personal allergen profile.

Educational Note

This page provides educational information only and does not make medical claims.