DailyMed A searchable database of over 48K drugs and products, including animal products."Propylene glycol" will return a list of close to 8000 products.
Copied directly from their introduction: "DailyMed provides high quality information about marketed drugs. This information includes FDA labels (package inserts). This Web site provides health information providers and the public with a standard, comprehensive, up-to-date, look-up and download resource of medication content and labeling as found in medication package inserts. The National Library of Medicine (NLM) provides this as a public service and does not accept advertisements."View Thread
This database links over 12,000 consumer brands to health effects from Material Safety Data Sheets (MSDS) provided by manufacturers and allows scientists and consumers to research products based on chemical ingredients. The database is designed to help answer the following typical questions:
What are the chemical ingredients and their percentage in specific brands?
Which products contain specific chemical ingredients?
Who manufactures a specific brand? How do I contact this manufacturer?
What are the acute and chronic effects of chemical ingredients in a specific brand?
What other information is available about chemicals in the toxicology-related databases of the National Library of Medicine"