Letter to FDA: 4-Aminophenol Share page: CHPA recognizes the need for modernization of USP monographs. CHPA member companies are dedicated to fulfilling their commitment outlined in the letter to this Planning Committee on February 2, 2011. Download Document Issues: OTC Medicines Acetaminophen 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