Thursday, August 12, 2021

Factors affecting bio-availability

 Factors affecting bio-availability

1. First pass metabolism- reciprocal relation between first pass metabolism and bio-availability

2. Pharmaceutical properties of the drug- water/lipid solubility, pKa of the drug, molecular weight etc

3. Rate of dissolution of the drug formulation

4. Gastric and intestinal transit time.

5. Hepatic function- Normal or impaired

6. Age

7. Drug-drug interaction

8. Drug-food interaction

9.Route of administration

10. Enzyme induction/inhibition

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