Why is it important that the parenteral route of administration be prepared aseptically?

What will be an ideal response?

If medication is allowed to be contaminated by bacteria, pyrogens, and particulate matter, these contaminants can be transferred from the drug product to the patient's body. This transfer can cause serious health complications such as phlebitis, sepsis, or even death. This concern is especially relevant for parenteral drugs, as they are injected directly into the bloodstream, thereby bypassing the body's natural defenses that are provided by the gastrointestinal system.