Cthulhu oil was good, but nothing else I've been taking so far has any obvious effect to me. Maybe I have less chest pain, but that is hard to quantify and associate with any one thing.
I found out yesterday that I have a genotype that affects the balance of Omega-3 and Omega-6 conversion, and a genotype that makes me more likely to be Vitamin D deficient. But seeing as I'm taking Cod Liver Oil and Vitamin D+K pills already, that isn't an issue.