I get lazy with my vitamins but I do take a multi, echinacea-golden root, D3, B complex, cod liver oil in capsules and maybe a few other supplements, zinc, vitamin C or even just have oranges around. But my main setback seems to be tiredness for a few days, sometimes, I"m not even sure what I have. I have gotten infections before, about 10 years ago, some pink eye and when it hits, I worry, "am I going to lose my eyesight in one eye?" but luckily, I recovered fairly quickly.