Maximum peak plasma concentration Cp max

The peak plasma concentration (Cp)max when time is equal to fmax- 

Differences in onset and peak time may he observed as a result of administration of the same drug in different dosage forms (tablet, suspension, capsules, etc.) or the administration of the same drug in same dosage forms but different 

Method 1. Peak plasma concentration obtained from the graph of plasma concentration versus time (Fig. 6.16). 

Method 2. Peak plasma concentration obtained by using an equation. (Equation 6.6) shows that  

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