According to FiercePharma Marketing, "Digital ad spending last year was just shy of $60 billion, with pharma accounting for about $3 billion of that, according to the Interactive Advertising Bureau’s annual ad revenue report prepared by PricewaterhouseCoopers" (read "Mobile Ad Spending Up, But Pharma's Share Remains Small"). Here's the data from IAB/PWC from which this conclusion was drawn: ...
Via Pharma Guy, Philippe Marchal