to deal with drunk passengers (during flight) there is ONLY one way...GIVE HIM/HER MORE ALCOHOL...till he/she becomes immobilized....all other ways you play with fire
Sorry, but that does not always work. Some people have such a high tolerance to alcohol that by giving them more, will cause the situation to become worse. By giving people like this more, can cause an 'blackout' episode where the drunk will have no knowledge of their actions to a point where all logical thought and any inhibitions to act like a normal person will be absent.
Most of the time, that is the worse thing you can do.
Now raising the cabin altitude to nine to ten thousand feet can be effective, but by doing that you run two risks, first being that you can harm the other passengers, secondly just as above, just make the drunk passenger drunker.
You also run the risk of making more passengers that have been consuming alcohol uncontrollable drunks.
The only way to really to control such people is to restrict them to their seats anyway you can, call ahead for police to meet the aircraft and not let the passenger in question loose until the police are on board and can take them into custody.
Or, as JW411 posted, send a rather large FE with the fire ax* back into the cabin to handle the situation.
* I flew with one FE that would not have needed a fire ax to handle anyone.