Pharmacology What does the term “bioavailability” mean? A Plasma protein binding degree of substance B Permeability through the brain-blood barrier C Fraction of an uncharged drug reaching the systemic circulation following any route administration D Amount of a substance in urine relative to the initial doze 💡 Explanation What does the term "bioavailability" mean? ✓ Correct Answer: C. Fraction of an uncharged drug reaching the systemic circulation following any route administration