, 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.
If you have unprotected  intercourse after you stop taking the pill, go to your doctor or  local clinic and get the morning after pill within 48 hours.   Hello.   Birth control remains in your system for a total of three months  once you stop taking it.he term half-life means that in 75 hours half of the dosage of the drug will be left in your system. After another 75 hours half of that half will be in your systems and so on.