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At steady state, the systemic exposure for armodafinil is 1.8 times the exposure observed after a single dose. The concentration-time profiles of the (R)-(−)-enantiomer following a single dose of 50 mg Nuvigil or 100 mg Provigil (modafinil being a 1:1 mixture of (R)-(−)- and (S)-(−)- enantiomers
Modafinil acid (code name CRL-40467), also known as modafinilic acid or modafinil carboxylate, is one of the two major metabolites of modafinil – the other being modafinil sulfone. [1]
Adrafinil is a prodrug; it is primarily metabolized in vivo to modafinil, resulting in very similar pharmacological effects. [6] Unlike modafinil, however, it takes time for the metabolite to accumulate to active levels in the bloodstream. Effects usually are apparent within 45–60 minutes when taken orally on an empty stomach. [citation needed]
Chemical structure of modafinil.. This page lists chemical compounds similar to modafinil, known as modafinil analogues and derivatives.These are structural analogues and derivatives of modafinil, a drug that affects dopamine levels in the brain in an unusual way (atypical dopamine reuptake inhibitor or DRI).
Modafinil, sold under the brand name Provigil among others, is a central nervous system (CNS) stimulant and eugeroic (wakefulness promoter) medication used primarily to treat narcolepsy, [3] [8] [15] a sleep disorder characterized by excessive daytime sleepiness and sudden sleep attacks. [16]
Modafinil sulfone (code name CRL-41056) is an achiral, oxidized metabolite of modafinil, a wakefulness-promoting agent.It is one of two major circulating metabolites of modafinil, the other being modafinil acid.
Drug metabolism is the metabolic breakdown of drugs by living organisms, usually through specialized enzymatic systems. More generally, xenobiotic metabolism (from the Greek xenos "stranger" and biotic "related to living beings") is the set of metabolic pathways that modify the chemical structure of xenobiotics, which are compounds foreign to an organism's normal biochemistry, such as any drug ...
The pharmaceutical company Cephalon, the original United States market rights holder of modafinil, has demonstrated initiative in the development of a successor to the prototypical eugeroic. [25]