I am on an antidepressant too (venlafaxin). I am only 10 days into Keto, and hoping that mood will be one of the longer term changes from it.
Even though Ive just started, I would reccomend it from this point of view. The science behind cutting out carbs and insulin spikes really does fare well for sustained cognitive and physical energy, and more even mood and anxiety levels. And for me its already stopped the shame I got from reaching for tons of junk food to feel better and then regretting it. Now I can tuck into bacon and eggs and feel proud about it 
One final point though: forewarned is forarmed! People can sometimes get the ‘keto flu’ which Im sure you may have heard about from your friends. Some get it, some dont, and when they do their symptoms can be different and vary in length. I dont want to put you off (really! I think you should give it a go
but just want to share that I had a couple of spikes in anxiety over the first few days, and felt a bit more crummy than usual. If I hadn’t found this forum, and asked others on it for advice, I would never have learned how common this can be and would have just thought something miserable like ‘oh typical me, tried something stupid that only made things worse, or i probably did it all wrong, im an idiot etc.’ I just wanted to share that because I think it’s important you are aware you could feel a bit worse (only potentially) so that you know that’s normal and dont give up or internalise the negative emotions 
I think you could get a lot out of the keto WOE. And my vote is that you give it a whirl!
Xo