Negative on that unless they are already being prescribed. Typical antidepressants (SSRIs; SNRIs) would take weeks to show much therapeutic benefit, and any improvement in mood is going to occur only if the brain's neurochemistry is deficient in the manner that the drug is designed to treat. Basically, a typical non-clinically depressed person is only going to see the side effects. Even worse are the withdrawal aide effects that can occur with abrupt, unsupervised cessation; these have put people into the ER (which if it is running at all will be busy with more pressing conditions).
When something really bad happens you are supposed to be depressed, and maybe shocked and angry. This is a normal reaction to situational factors. Trying to drug yourself into some kind of anesthesia instead of coping as best you can is not a good idea.
Bump that: BAD IDEA.
Going on or off antidepressants without doctor supervision is going to make a very bad situation much much worse. Until the patient gets settled on the drug at proper effective dosages (or off it completely), s/he’s prone to wild mood swings over _mundane_normality_ - doing it over extremely stressful situations will create yet another major liability.
But that is a reminder on the meds subject: if someone IS on antidepressants, and they run out cold turkey, be ready for an onslaught of extreme behavior (severe anxiety, depression, verbal or physical abusiveness, OCD, irrationality, obscenity, etc.) for a week or so, followed by a return to whatever state of mind which was bad enough to prompt prescription of antidepressants in the first place.