Ranitidine
Ranitidine, wanda ake sayar da shi a ƙarƙashin sunan kasuwanci Zantac da sauransu, magani ne wanda ke rage yawan samar da acid na ciki. An kuma  fi amfani da shi don magance cututtukan cututtukan peptic, cututtukan gastroesophageal reflux, da ciwon Zollinger-Ellison. Har ila yau, akwai shaidar ɗan lokaci na fa'ida ga amya. Ana iya ɗauka ta baki, ta hanyar allura a cikin tsoka, ko cikin jijiya.

Abubuwan da aka sani sun haɗa da ciwon kai, da zafi ko ƙonewa idan an yi musu ta hanyar allura. Mummunan illa na iya haɗawa da matsalolin hanta, jinkirin bugun zuciya, ciwon huhu, da kuma yuwuwar rufe kansar ciwon ciki. Hakanan yana da alaƙa da haɓakar haɗarin Clostridium difficile colitis. Gabaɗaya yana da lafiya a cikin ciki. Ranitidine antagonist mai karɓar H2 histamine ne wanda kuma ke aiki ta hanyar toshe histamine, don haka yana rage adadin acid ɗin da ƙwayoyin ciki ke fitarwa.

An gano Ranitidine a Ingila, UK a cikin shekarar 1976, kuma ya fara amfani da kasuwanci a 1981. Yana cikin Jerin Mahimman Magunguna na Hukumar Lafiya ta Duniya. Ana samunsa azaman magani na gama-gari. Farashin 2015 a cikin ƙasashe masu tasowa ya kai dalar Amurka 0.01-0.05 kowace kwamfutar hannu. A Amurka kusan $0.05 ne a kowane kashi. A cikin 2017, shi ne na 48th mafi yawan magunguna a Amurka, tare da rubutattun magunguna sama da miliyan 16.

A cikin Satumba 2019, an gano carcinogen N-nitrosodimethylamine (NDMA) a cikin samfuran ranitidine daga masana'antun da yawa, wanda ya haifar da tunowa. A cikin Afrilu 2020, an janye shi daga kasuwar Amurka kuma an dakatar da shi a cikin Tarayyar Turai da Ostiraliya saboda waɗannan damuwa.

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