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Updated: Jan 19, 2026

Drug Delivery: Parenteral Route
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Drug Delivery: Parenteral Route

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Transdermal fentanyl to parenteral morphine route switch and drug rotation in refractory cancer cachexia

Samy A Alsirafy1,2, Saad H Alabdullateef3, Ashraf M Elyamany4,5

  • 1Palliative Care Service, Hematology-Oncology Department, King Saud Medical City, Riyadh, Saudi Arabia alsirafy@kasralainy.edu.eg.

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Drug Delivery: Parenteral Route01:29

Drug Delivery: Parenteral Route

The parenteral route is a critical method of drug administration. It delivers compounds directly into the systemic circulation and bypasses the gastrointestinal tract. This approach is particularly advantageous for drugs that exhibit poor absorption or instability when administered orally.
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