Heroin users need regular review to cut addiction, GPs told GPs caring for heroin addicts should regularly review their use of substitute drugs if patients are to 'leave addiction behind', experts have warned. by Sarah Whitehead Sign in to continue Sign In Email address Password Stay signed in Trouble signing in? Reset password: Click here Need help? Email us Register FREE Limited free articles a month Free email bulletins Register Now Register Now Take a 30-day trial Join MIMS now and pay nothing for the first 30 days Join GPOnline now and pay nothing for the first 30 days Sign Up Sign Up