Yes, other than Lithium everything is a synthetic compound.

I also do not take questionable supplements - calcium I do not need because of eating/drinking plenty of dairy, multi-vitamins which are questionable I do not need because I eat a good diet, Resveratrol I used to take but do not need anymore because I drink red wine, Lutein I do take because my OD told me to, Fish Oil - everyone takes it, and as I sad vitamin D. That's all. So not a lot, no.