, 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.
How long does it take for citalopram/celexa to work? I started taking it 2.5 weeks ago. At first I had pretty bad anxiety attacks in the middle of the night, but they would subside. For the past week, I have been soooo depressed. I have no energy to face things, I feel utterly lost and hopeless, and I feel horrible about myself.