more (something) than Carter('s) has (liver) pills
old-fashioned A huge number of something; an amount of something that is greater than one can count. A reference to a popular patent medicine created in 1868 called "Carter's Little Liver Pills" (renamed "Carter's Little Pills" in 1959). I swear, that boy's got more excuses than Carter has liver pills! Their company's got more money problems than Carter's has pills—I wouldn't be surprised if they went bankrupt next week!
more something than Carter has (liver) pills
Fig. a great deal of something. (Older; refers to a product called Carter's Little Liver Pills.) Why he's got more problems than Carter has pills! Bobby has more marbles than Carter has liver pills!