, decay series. The series of isotopes that some radioactive elements change into as they undergo radioactive disintegration. The last element in the series is often a stable element (i.e., it is nonradioactive).
Making the world better, one answer at a time. Celexa has a 36 hour half life...meaning it will take 36 hours for 50% of the drug to leave your system and another 36 hours for it to be fully out of your system.Read more at the Related Link.f you were to smok â¦ e marijuana every day for a month, it would take approximately one month for the THC to get out of your system. On the flip side, if you only smoked a few times and quit, it take around two weeks or so.
Best Answer: Citalopram is the generic for Celexa and has an average half-life of approx 35 hrs, which means that it takes that long on average for the level in your blood stream to drop to half its initial value.est Answer: Citalopram is the generic for Celexa and has an average half-life of approx 35 hrs, which means that it takes that long on average for the level in your blood stream to drop to half its initial value.