Biopharmaceutics play a key role in the knowledge societies and this knowledge is rising by leaps and bounds within no time. Scientists and academicians require a broad understanding of the latest updates in the respective discipline for their professional and learning endeavors. 1. the assessment of bioavailability and bioequivalence of new drugs and generic marketed drugs, respectively; 2. the pharmacolinetic characterization of new drugs and new drug delivery systems; 3. adjustment of dosing regimen; 4. assessment of kinetic profile of drugs in diseases state and dose adjustment thereof. Patient-drug pharmacokinetic profile designed to avoid toxicity is illustrated.