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Non-Oral Administration

Meaning

Any therapeutic route for delivering a drug or hormone into the systemic circulation that bypasses the gastrointestinal tract and the initial hepatic first-pass metabolism. Common examples include transdermal (gels, patches), injectable (intramuscular, subcutaneous), and transmucosal (sublingual, nasal) methods. In the context of hormonal therapy, this route is often clinically preferred to achieve more stable serum concentrations and potentially reduce specific risks associated with oral delivery.