Well, I think they don't actually work. The anxiety one does but the depression medication does nothing. I wish they'd try something other than fucking SSRIs.
As has been mentioned, you need to be taking them regularly for there to be an effect. Furthermore, they're not "happy pills". They don't make you magically feel happy and grand and high. What they do, is they reduce the frequency and intensity of depressive episodes.
Personally, I have micro-episodes that only really last a day or two at a time. I went from having one nearly every week, to having maybe 3-4 a year. Which is an improvement, to say the least.
They don't make you "good", they just make you "stable". But yes, you do actually need to take them regularly in order for that to work... And the change is gradual, as well as being fairly subtle from a first-person perspective... And they're the safest alternatives you have, with the fewest notable side effects.
Like, sure, you could try and wrangle your doc into giving you MAOIs... But then you'd better hope to fuck that you get the right one on your first try, because they can have permanent effects.
Unless your doc suddenly turns into your Ket contact and you wind up being one of the lucky individuals who gets a good reaction to K without the nasty side effects, SSRIs are generally your best bet. And there are a lot of different meds just within the SSRI umbrella, talk with your doc. But you've gotta give them a chance.
Screaming Snakes Ride Icebergs?
Special Sauce Really Important?
Super Saiyan Rhode Islanders?
Selective Serotonin Reuptake Inhibitors. An awfully convoluted name...