An internal review has yet to conclude whether there is a link between any supplements the Arsenal players may occasionally take and muscular injuries, which have yet again blighted the club this season.
Arsenal medical support staff are closely monitoring any medication given to the squad to treat specific health issues to find out whether a link can be made with the muscular injuries the club has encountered this season.
Wenger believes a balanced approach is the best way to develop an athlete's overall health.
Wenger told the media:
"Some of them (fitness issues) are linked with medication that the players take that you don't even know about it, then you realise afterwards that they took this medication, but that is not good for the liver, when the liver does not work well, the toxins don't go as quickly out of the body as they should and they (players) get tired.
"For example, if you are losing your hair and if you have taken something to make your hair grow, it might not be good especially for the rest of your body.
"Medication always pushes a part of your body and is sometimes detrimental to some other parts of your body.
"At the moment we have not come to any conclusion, every case can be very different and you need to analyse very deeply why things happen.
"They (players) are surrounded today by people who want to enhance their performances or sometimes another problem in their life and it is not necessarily always a good thing to do."