It's surprising to have a movie with A-list starts be this wacky. It's exciting and feels fresh for the first 30 minutes or so, right up until the moment the lead character, Lucy, gets the drugs removed from inside her. The phone call to mommy was especially wonderful. The villain was also very scary. Most of the rest is gibberish, bordering on stupid. By the time the whole thing ends, I was tempted to call the move bad, but there's still that first 30 minutes.
One other thing to praise was the WTF that Morgan Freeman expressed on the first phone call to this Lucy character. I don't recall such a level of wonderment in all of my movie-watching experience (but I have shitty memory).
The story concept is similar to that of Limitless, but with far less restraint, and a much lesser script.