Medical Uses
PG has been used as the aqueous-based chemical additive in asthma inhalers and nebulizers since the 1950s, with no serious side effects known. PG, because of its water-retaining properties, is the compound of choice for delivering atomized medication. It is also a common diluent for injectable medications, constituting 40 percent of the intravenous form of Phenytoin, an anti-seizure drug.
Electronic Cigarettes
Persons trying to quit smoking have recently turned to the recent invention of electronic cigarettes. Battery-powered, these
devices deliver measured amounts of nicotine diluted in PG and then inhaled. A heating element within the
device vaporizes the compounds, thereby allowing for easy inhalation. While many have questioned the safety of electronic cigarettes, their concerns are directed toward the inconsistent amounts of nicotine, not the PG solution in which it is delivered.