T 12 ln2l. Nt N0 05 tT. Consequently the half life equation becomes.
T 1 2 1 A 0 k displaystyle t_ 12 frac 1 A_ 0k.
The term is also used more generally to characterize any type of exponential or non-exponential decay. Half-life is used to estimate how long it takes for a drug to be removed from your body. Learn about formulas and factors. So if you take ambien after 2 hours the plasma concentration will be reduced to.