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  2. Peak-to-trough ratio - Wikipedia

    en.wikipedia.org/wiki/Peak-to-trough_ratio

    Peak-to-trough ratio in pharmacokinetics is the ratio of peak (C max) and trough (C min) levels of a drug over its dosing interval (τ) at steady state.. Peak-to-trough ratio (PTR), also known as peak-to-trough variation or peak-to-trough fluctuation, is a parameter in pharmacokinetics which is defined as the ratio of C max (peak) concentration and C min (trough) concentration over a dosing ...

  3. Trough level - Wikipedia

    en.wikipedia.org/wiki/Trough_level

    In a medicine that is administered periodically, the trough level should be measured just before the administration of the next dose in order to avoid overdosing. [3] A trough level is contrasted with a "peak level" (C max), which is the highest level of the medicine in the body, and the "average level", which is the mean level over time. It is ...

  4. Apixaban - Wikipedia

    en.wikipedia.org/wiki/Apixaban

    Apixaban is a highly selective, orally bioavailable, and reversible direct inhibitor of free and clot-bound factor Xa. Factor Xa catalyzes the conversion of prothrombin to thrombin, the final enzyme in the coagulation cascade that is responsible for fibrin clot formation. [ 27 ]

  5. Pharmacokinetics - Wikipedia

    en.wikipedia.org/wiki/Pharmacokinetics

    At a practical level, a drug's bioavailability can be defined as the proportion of the drug that reaches the systemic circulation. From this perspective the intravenous administration of a drug provides the greatest possible bioavailability, and this method is considered to yield a bioavailability of 1 (or 100%).

  6. UPDATE: With Multimedia: U.S. FDA Approves ELIQUIS ... - AOL

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  7. Cmax (pharmacology) - Wikipedia

    en.wikipedia.org/wiki/Cmax_(pharmacology)

    C max is the maximum (or peak) serum concentration that a drug achieves in a specified compartment or test area of the body after the drug has been administered and before the administration of a second dose. [1] It is a standard measurement in pharmacokinetics.

  8. Direct factor Xa inhibitors - Wikipedia

    en.wikipedia.org/wiki/Direct_factor_Xa_inhibitors

    Direct factor Xa inhibitors include rivaroxaban, apixaban and edoxaban, and are types of direct oral anticoagulant (DOAC), which are blood thinning drugs, one of the classes of antithrombotic drugs.

  9. Discovery and development of direct Xa inhibitors - Wikipedia

    en.wikipedia.org/wiki/Discovery_and_development...

    The p-methoxy group of apixaban connects to S1 pocket of FXa but does not appear to have any interaction with any residues in this region of FXa. The pyrazole N-2 nitrogen atom of apixaban interacts with Gln-192 and the carbonyl oxygen interacts with Gly-216. The phenyl lactam group of apixaban is positioned between Tyr-99 and Phe-174 and due ...