Comments to USP: Multiple Active Ingredient Product Monographs Share page: Letter to Drs. Femia and Santos regarding multiple active ingredient product monographs. Download Document Issues: OTC Medicines Related Posts Comments Comments Regarding Control of Nitrosamine Impurities in Human Drugs Dec 20, 2024 Press Releases and Statements Rates for Teen Abuse of OTC Cough/Cold Medication Remains Low According to NIDA Survey Dec 18, 2024 Pediatric Cough/Cold Dosing