Hi again, Kat.
A quick list of supplements for depression: St. John's Wort, 5-HTP, SAM-e, Omega Brite.
St. John's Wort and 5-HTP shouldn't be taken with other antidepressant meds, Omega Brite is okay to combine with meds, and I haven't found anything on SAM-e.
I had depression before LC, and control it without meds. It runs in my family and I've had depressed periods my entire adult life. I researched the meds, but wasn't impressed with either the results or the side effects. My sister is on a couple of different meds and still doesn't really have it under control and I lost a good friend years ago to suicide despite his trying all the good drugs, so I have to say I have emotional baggage that makes me kind of...anti-antidepressant.
Several years ago I had a bad episode when I could barely get out of bed and stay out of bed for the day. Everything that was nothing was just too much. I pulled out of it with a combination of SAM-e and 5-HTP. SAM-e does a number of things in the body, but I'll spare you my amateur attempt at explaining biochemistry. The effect it has on me is to give me more mental energy to deal with everything. 5-HTP is an intermediary step of l-tryptophan (amino acid) on it's way to becoming serotonin ("feel good" neurotransmitter). The SSRI drugs affect serotonin levels, and 5-HTP gives you the building block for your body to create more serotonin. I took a lot of these to pull out of that bad episode - 800mg of SAM-e in divided doses, and 400 mg of 5-HTP also divided throughout the day. After that I started taking a fish oil supplement called Omega Brite. The therapist I was seeing said she saw a real difference in me after the Omega Brite.
http://www.omegabrite.com
Over the years I've reduced my dosage of these. Last summer I started to have more anxiety and stopping the SAM-e helped with that. I also quit coffee at that point and am only now coming to the realization that I probably should be avoiding chocolate too.

So, right now the depression is at bay with four 500 mg capsules of Omega Brite and 100 mg. of 5-HTP at bedtime when I'm feeling a little anxious or unmotivated.
Diet can affect depression as well. I don't know, but it seems likely that food intolerances could cause mood issues. Also, I've noticed in myself and heard from other people that low carb diets can exacerbate mood disorders. Trans fats do the opposite of omega-3s and I find I can take less omega brite with the same therapeutic effect if I don't eat trans fats.
Hope this helps.