cmd:takemeth(playerid, params[])
{
    MethStage[playerid] = 1;
    SetTimerEx("MethStageTimer", 3000, true, "d" playerid);
}

forward MethStageTimer();
public MethStageTimer()
{
    if(MethStage[playerid] == 1)
    {
        // do the stage 1 stuff
        MethStage[playerid] = 2; // makes sure the timer will do meth stage 2 when it repeats

    }
    else if(MethStage[playerid] == 2)
    {
        // do the stage 2 stuff
        MethStage[playerid] = 3; // makes sure the timer will do meth stage 2 when it repeats

    }
    if(MethStage[playerid] == 3)
    {
        // do the stage 3 stuff
        MethStage[playerid] = 4; // makes sure the timer will do meth stage 2 when it repeats
    }
}