The Emirates Stadium club maintain no link has been found between any supplements the Arsenal players may occasionally take and muscular injuries, while their medical support staff also closely monitor any medication given to the squad to treat specific health issues.
Wenger believes a balanced approach is the best way to develop an athlete's overall health.
"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," Wenger said.
"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."
Wenger added: "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."
Arsenal head to Everton on Sunday seven points off leaders Liverpool following last weekend's morale-boosting 1-1 draw against Manchester City.
However, the Gunners are also only four points ahead of fifth-placed Everton, who hold a match in hand.
Wenger remains confident his side have what it takes to qualify once again for the Champions League, as they have done for 16 consecutive seasons.
"What plays a part is the memory that you have done it before, so we know we can do it," he said.
However, the Arsenal manager insists the Emirates Stadium club need elite European football more for their status rather than balancing the books.
"It was an obsession because of the financial compulsory situation, I have always been guided by - no matter what happens - getting in the Champions League. (Now) financially the pressure is less," Wenger said.
"It is approximately £35million, but for me it's not financial, it was before, what it is now is to play against the best - pride and prestige.
"On a sporting side it is greater because we have been the leader of the league this season so not to make it (now), the pressure is bigger.
"We want to be in there but it is down to our results in our last six games to make sure that happens."