CVS is an American pharmacy retailer company with more than ten thousand stores. CVS Pharmacy one of the largest pharmacy chain. As the wholesale pharmacy division of CVS Health, it defences as the 10th largest company in the globe according to Fortune 500 in 2016. Walgreens is the competitor of CVS but it is at 37th rank. They deal in all types of drugs like vitamins, nutrition, baby health products, skin and sexual health drugs and medicines.