Brief Answer:
several possibilities.

Detailed Answer:
The key point is that withdrawal from alcohol causes overstimulation of the nervous system. THe classic way to avoid the potentially serious delirium tremens, seizures, hallucinations, increased blood pressure etc. is to take benzodiazepines in a hospital environment. This is pretty close to entirely safe.

Next best was the predominant method in some European countries to not have benzodiazepine necessarily but to have a sedating environment of low noise and light. Obviously if someone is not having as much withdrawal, they don't need as much drugs, so under different circumstances each might be the right choice.

More recent variations are to use anti-epileptics in preference to benzodiazepine.

But in all of these circumstances, the patient comes off of alcohol in at least a watched environment if not a hospital with monitors.

Things are different depending on the patients other medical illnesses, other medicines and if they have a history of withdrawal complications, and how much alcohol they take.

And... also, vitamins (thiamine especially), food, hydration, anti-nausea medicine.

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