This is not a movie or even a documentary. It is what's usually called an infomercial. That is, it's a commercial for the Burzynski Clinic thinly disguised as a documentary. Ok, that would be acceptable if there was any evidence to show that Burzynski's "antineoplaston" therapy actually had any published evidence of benefit. If you search the database of medical journals - PubMed - you will find just 38 articles using the search term "Burzynski antineoplaston". None of these publications are reports of completed clinical trials. Most are laboratory studies, the remainder are no more than case reports or tiny series of cases in the form of preliminary reports of mixed up trials. Burzynski is allegedly running clinical trials of his antineoplaston therapy, but since his first publication on the subject back in 1976 he is still to publish any meaningful results. This is despite running 61 clinical trials according to the US registry of clinical trials, searchable at [...] Of those 61 trials, only one has ever been completed - the results have never been published. The rest are either withdrawn, terminated or of unknown status. This represents an abject failure by Burzynski to produce any evidence of benefit whatsoever.
Caveat emptor - but remember this is the life of yourself or a loved one you might damage.