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  2. Levetiracetam - Wikipedia

    en.wikipedia.org/wiki/Levetiracetam

    Levetiracetam, sold under the brand name Keppra among others, is a novel antiepileptic drug [7] used to treat epilepsy. [8] It is used for partial-onset , myoclonic , or tonic–clonic seizures, [ 7 ] and is taken either by mouth as an immediate or extended release formulation or by injection into a vein .

  3. Biological half-life - Wikipedia

    en.wikipedia.org/wiki/Biological_half-life

    In clinical practice, this means that it takes 4 to 5 times the half-life for a drug's serum concentration to reach steady state after regular dosing is started, stopped, or the dose changed. So, for example, digoxin has a half-life (or t ⁠ 1 / 2 ⁠ ) of 24–36 h; this means that a change in the dose will take the best part of a week to ...

  4. Clearance (pharmacology) - Wikipedia

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

    In pharmacology, clearance is a pharmacokinetic parameter representing the efficiency of drug elimination. This is the rate of elimination of a substance divided by its concentration. [ 1 ] The parameter also indicates the theoretical volume of plasma from which a substance would be completely removed per unit time.

  5. Pharmacokinetics - Wikipedia

    en.wikipedia.org/wiki/Pharmacokinetics

    The model outputs for a drug can be used in industry (for example, in calculating bioequivalence when designing generic drugs) or in the clinical application of pharmacokinetic concepts. Clinical pharmacokinetics provides many performance guidelines for effective and efficient use of drugs for human-health professionals and in veterinary medicine .

  6. Half-life - Wikipedia

    en.wikipedia.org/wiki/Half-life

    In this situation it is generally uncommon to talk about half-life in the first place, but sometimes people will describe the decay in terms of its "first half-life", "second half-life", etc., where the first half-life is defined as the time required for decay from the initial value to 50%, the second half-life is from 50% to 25%, and so on.

  7. Absorption rate constant - Wikipedia

    en.wikipedia.org/wiki/Absorption_rate_constant

    The absorption rate constant K a is a value used in pharmacokinetics to describe the rate at which a drug enters into the system. It is expressed in units of time −1. [1] The K a is related to the absorption half-life (t 1/2a) per the following equation: K a = ln(2) / t 1/2a. [1] K a values can typically only be found in research articles. [2]

  8. 'She lied to me about Kyran or police have it wrong'

    www.aol.com/she-lied-kyran-police-wrong...

    Drogheda Life journalist Andrew Spearman said he had a "nodding acquaintanceship" with Ms Tyson prior to their interview. When Gardaí launched a murder investigation weeks after the recording was ...

  9. Plateau principle - Wikipedia

    en.wikipedia.org/wiki/Plateau_Principle

    Once hydroxylated, the vitamin has a half-life of about 2 months. [11] Various studies have suggested that current intakes are inadequate for optimum bone health and much current research is aimed at determining recommendations for obtaining adequate circulating vitamin D 3 and calcium while also minimizing potential toxicity.