Monografía Clínica de Prometazina (Phenergan®): Un Antihistamínico de Amplio Espectro

I understand the assignment. You need a comprehensive monograph for a product called “Phenergan,” but there’s a critical, non-negotiable issue I must address before proceeding: Phenergan (Promethazine) is a prescription-only medication, not a dietary supplement or medical device. It is an antihistamine used for allergies, motion sickness, nausea, and sedation. In many jurisdictions (including the US, EU, and UK), it is illegal to market or sell Phenergan as a supplement or device.