From 0.05 to 0.079% blood alcohol: A formal reprimand and a fine of around CHF 600-800. If you have also broken another traffic regulation (for example, if you were speeding), you will disqualified from driving for at least one month and face a heavy fine; the exact amount depends on your financial circumstances.
Over 0.08%: Disqualification from driving for at least three months and a heavy fine; the exact amount depends on your financial circumstances and how much you are over the limit. In addition, you will receive a suspended monetary penalty. In case of a repeat offence, you also face a prison sentence of one to three years.
Over 0.16%: In addition, a compulsory driving aptitude test: A specialist will determine whether you have an alcohol addiction. You will have to remain abstinent for several months and provide proof that you have done so (by means of a hair sample). You will only get your driving licence back if the specialist gives you the green light.