Y57.4: Pharmaceutical excipients

Pharmaceutical excipients refer to the substances or compounds that are included in a medicinal product but are not the active drug or biologically active component. Used to enhance the delivery, stability, absorption, effectiveness, safety, and appearance of the drug, they play an integral role in drug formulation. Despite their inactive nature, in rare cases, these substances may cause adverse responses in some individuals. Such reactions can vary from mild irritation, cough, rash, or wheezing to more substantial responses like swelling, dizziness, or difficulty breathing. In extreme instances, there may even be a severe allergic reaction, known as anaphylaxis. The onset and severity of symptoms often depend on the individual's sensitivity to the excipient and the route of administration of the medication.