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In 1849 , American-German cousins Charles Pfizer and Charles Erhart founded Charles Pfizer & Company in Brooklyn , New York . Following the Civil War , the company saw its revenues double and started to expand across the country . Now , Pfizer has 35 manufacturing sites and 30,000 employees in over 180 countries . Supported by Moderna , Oxford- AstraZeneca and Johnson & Johnson , Pfizer-BioNTech invented the COVID-19 vaccine in 2020 .

Its best known drugs include Viagra , Xanax and Advil , while Pfizer ’ s consumer healthcare products range from Chapstick and Preparation-H . Multivitamin brand Centrum is the most doctor- and pharmacist-recommended in the USA while ThermaCare Heatwraps can warm muscles right where it hurts . Yet at the time of writing , one of Pfizer ’ s factories in North Carolina which makes almost 25 % of Pfizer ’ s sterile injectable medicines has just been hit by a tornado . While no members of staff were injured , this could cause a severe supply chain disturbance .

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