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Esomeprazole, sold under the brand name Nexium [or Neksium] among others, [2] is a medication which reduces stomach acid. [11] It is used to treat gastroesophageal reflux disease , peptic ulcer disease , and Zollinger–Ellison syndrome .
[20] [21] [22] In the United States, the Food and Drug Administration (FDA) has advised that over-the-counter PPIs, such as Prilosec OTC, should be used no more than three 14-day treatment courses over one year. [23] [24] Despite their extensive use, the quality of the evidence supporting their use in some of these conditions is variable.
Esomeprazole magnesium (brand name Nexium) received its first approval in 2000 and provided more pronounced inhibition of acid secretion and less inter-patient variation compared to omeprazole. In 2004, Nexium had already been used to treat over 200 million patients. [7] [8]
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AstraZeneca also developed esomeprazole (Nexium) which is a eutomer, purely the (S)-enantiomer, rather than a racemate like omeprazole. [ medical citation needed ] Omeprazole undergoes a chiral shift in vivo which converts the inactive ( R )-enantiomer to the active ( S )-enantiomer, doubling the concentration of the active form. [ 59 ]
Naproxen/esomeprazole, sold under the brand name Vimovo, is a pain reliever medication in the form of a tablet for oral consumption, containing naproxen, a nonsteroidal anti-inflammatory drug (NSAID), and a delayed release formulation of esomeprazole, a stomach acid–reducing proton-pump inhibitor (PPI).
Cimetidine was the prototypical histamine H 2 receptor antagonist from which later drugs were developed. Cimetidine was the culmination of a project at Smith, Kline & French (SK&F; now GlaxoSmithKline) by James W. Black, C. Robin Ganellin, and others to develop a histamine receptor antagonist that would suppress stomach acid secretion.
In Western populations, GERD affects approximately 10% to 20% of the population and 0.4% newly develop the condition. [9] For instance, an estimated 3.4 million to 6.8 million Canadians have GERD. The prevalence rate of GERD in developed nations is also tightly linked with age, with adults aged 60 to 70 being the most commonly affected. [ 81 ]