how long for activated charcoal to start working?

so i bought this charcoal supplemet 180mg each capsule + 50 mg peppermint and am wondering how long to start noticing difference in my digestive system
am always bloated and have gas all the time and probiotics helped 50% and now am trying charcoal to get even better but how long will it take to notice it ? i took 1 pill today but still having bad gas :(