Drug Half Life (t-1/2)
Time
taken for the amount of a drug's active substance to decreased by 50%
It
takes 5.5, t-1/2 for a drug to be removed from the body & considered no
longer have a clinical effect.
For
Ambien t1/2 ≈ 2hrs & would take ≈11hrs (2hrs X 5.5) to be eliminated from
the body.

