Glycerin (C3H8O3), also known as Glycerol and Glycerin, is an odorless, colorless, oily, viscous liquid that has a sweet Taste.

Synthetic Glycerin is used in Food Products, nutritional Supplements, pharmaceutical Products, personal-care Products, and oral-care Products. In the pharmaceutical Industry, Glycerin is used as a Sweetener in Syrups, Lozenges, and as an excipient in eyewash Solutions. It may also be found in Ear drop Products, Jellies and Creams for topical Use, in Expectorants for Congestion, Suppositories, and Gel Capsules.

As an individual prescription Product, Glycerin has Uses as a hyperosmotic, osmotic diuretic, and ophthalmic Agent. It may be used as Eye drop in the treatment of Glaucoma to reduce intraocular Pressure, as a Solution or Suppository for short-term Treatment of Constipation, to evacuate the Bowel prior to Colonoscopy, and in some ocular Surgeries. It may be given intravenously to reduce Pressure inside the Brain, and used externally on the Skin as a Moisturizer. Glycerin has many other Uses in the agricultural, food and pharmaceutical Industry.

The U.S. Food and Drug Administration (FDA) classify Glycerin as “generally recognized as Safe”.

Propylene Glycol (CH8O2) is a commonly used Drug Solubilizer in topical, oral, and injectable Medications. It is used as Stabilizer for Vitamins, and as a water-miscible Cosolvent.

Propylene Glycol has been used for over 50 years in a large variety of Applications. As a pharmaceutical Additive, Propylene Gglycol is generally regarded as Safe.