Medical News Today -- According to a new Consumer Reports Best Buy Drugs report, parents should be skeptical if their doctors offer them free prescription drug samples, especially for the treatment of attention deficit hyperactivity disorder (ADHD). Free samples can hook consumers on high-priced brand name drugs that are not any better or safer than less expensive generic medicines. In addition, when doctors give out free samples, they often fail to give patients information inserts that highlight important safety and side effect information.