I don’t have experience with SSRIs but I did use kava to help my withdrawal from Klonopin, which is a benzodiazepine.
Kava is usually referred to as heavy, heady, or balanced...but kava affects everyone differently.
It also depends on why you’re taking it and how bad your withdrawal is. My withdrawal about killed me for two years straight. I drink a lot of kava and for the most part enjoy it but usually it makes me feel like what I picture emotionally normal people to feel, if that makes sense.
I started with a more balanced kava, such as Mahakea.
I take kava mostly medicinally but kava will never replace a prescription in the sense of strength or effects, although it is amazingly powerful and effective.
You may want to try a sample pack from a trusted vendor and just jump in and see what works for you.