Express Scripts reported 20 percent boost in third-quarter profit

Express Scripts reported a 20 percent boost in third-quarter profit, but executives for the pharmacy benefits manager cautioned it faces a weaker outlook heading into 2013. It said, ‘‘the current weak business climate and the unemployment outlook’’ could restrain performance next year. Net income was $391 million, or 47 cents per share, vs. $324.7 million, or 66 cents, a year ago. It raised the lower range of its guidance, predicting 2012 results of
between $3.65 and $3.75.