http://www.snopes.com/medical/drugs/generic.asp Snopes reports the chart has some issues because of the actual costs of research and development, but, even with that said, once the drug is on the market and R&D is well done and paid for what a profitable business it can be to be a drug maker.
Brand Name
of Drug
Consumer Price/100 tabs
Cost of General
Active Ingredients
Percent Markup
Celebrex 100 mg $130.27 $0.60 21,712%
Claritin 10 mg $215.17 $0.71 30,306%
Keflex 250 mg $157.39 $1.88 8,372%
Lipitor 20 mg $272.37 $5.80 4,696%
Norvasc 10 mg $188.29 $0.14 134,493%
Paxil 20 mg $220.27 $7.60 2,898%
Prevacid 30 mg $44.77 $1.01 34,136%
Prilosec 20 mg $360.97 $0.52 69,417%
Prozac 20 mg $247.47 $0.11 224,973%
Tenormin 50 mg $104.47 $0.13 80,362%
Vasotec 10 mg $102.37 $0.20 51,185%
Xanax 1mg $136.79 $0.024 569,958%
Zestril 20 mg $89.89 $3.20 2,809%
Zithromax 600mg $1,482.19 $18.78 7,892%
Zocor 40mg $350.27 $8.63 4,059%
Zoloft 50mg $206.87 $1.75 11,821%