ONRsenal's win over rival Spurs and the week's draw under Old Trafford were overshadowed by a video that seemed to showcase several players inhaling nitrous oxide.
The club says it will "remind players of its responsibility", including stars such as Mesut Ozil, Pierre-Emerick Aubameyang, Alexandre Lacazette and Matteo Guendouzi.
In a statement, Arsenal said, "The players are being talked about and reminded of their responsibility as a club representative."
Nitrous oxide, also known as nitrous oxide or "hippie crack", is freely available, but it is technically prohibited to sell it for recreational purposes.
In the video, which comes from a London venue shortly before the start of the current season, other Gunners players, including Henrik Mkhitaryan, may reject the offer to use the gas.
Arsenal started the season with two defeats, but has since been in great shape under new coach Unai Emery.
The Gunners are undefeated in 20 competitions in all competitions and will face Huddersfield in the Premier League this afternoon.
Their upcoming series of games against Huddersfield, Southampton, Burnley and Brighton seem to be favorable before their last match of the calendar year on December 29th in Liverpool.
Emery, however, had a two-word deduction when asked about the earnings situation and just said, "The next one."
Defender Rob Holding (knee) has been eliminated. On Friday afternoon, Arsenal confirmed that he had broken the anterior cruciate ligament in his left knee.
Ozil (back) will probably miss again, while Aaron Ramsey (ankle) is a doubt.
Granit Xhaka is available after suspension, while Laurent Koscielny returns from his long-term Achilles problem, though he may have to wait for the Thursday-Europe duel with Qarabag.