Generic drug maker on a roll...Andrx Corp (ADRX) of Fort Lauderdale, FL, announced its first quarter results on Wednesday. Its profit quadrupled largely due to strong sales of two recently launched generics. The Company earned $26.7MM or 36 cents per share, compared to $6.4MM or 9 cents per share a year earlier. That easily beat expectations according to Reuters Research. Andrx shares rose more than 7% on the day to $25.46. They held today closing at $25.50.