If you've had any alcohol, you should wait at least for every drink you've had before you drive

at least 1 hour

The answer is: It depends

Explanation:

Each person's alcohol digestion varies greatly, especially if you are considering their size.

A person's weight can influence in alcohol digestion by taking more or less to be fully absorbed.

The alcohol content present in beverages can also create many variables, and the time it takes for you to be fully capable of drive varies with it, ranging from 1 hour up to 5 hours.

One good rule of thumb is to actually not drink at all if you are planning to drive after, if you wish to do so call a cab.