diazepam ie valium is in the same group as temazepam ( a sleeping tablet).
ie bennies. used in conjunction with any other drug can be lethal.especially if tolerance is an issue.
http://www.racgp.org.au/guidelines/benzodiazepines
http://www.druginfo.adf.org.au/druginfo/drugs/drugfacts/benzodiazepines.html
http://www.dassa.sa.gov.au/webdata/resources/files/Benzo_Conversion_Chart.pdf
Diazepam isnt gonna be prescribed by the Richmond doctors... If it is well the AFL should step in and sack them. Dont wanna name the drug the players actually take but its not on the level of Diazepam which is literally just a tranquilizer