Khloe Kardashian Cancels 'Kocktails' ... Lamar's Drinking Takes Its Toll

Lamar Odom hitting the bottle again is taking such a toll on Khloe Kardashian, she pulled the plug on taping "Kocktails with Khloe" this week ... TMZ has learned.

We're told Khloe told production she was too sick to shoot Thursday, but it's not because of the flu.