I took a Vitamin B-Complex 100 yesterday for the first time, to help with energy, mood & stress ect. I trusted in the vitamin store as always for their input, I honestly felt awful, brain fog / headache , like I was high, upset stomach burning, and honestly it felt like liver pain (back and under right rib area) pain near where my gallbladder was (removed last yr) today day after severe brain fog is this normal or a possible side effect of the vitamin that my body just rejected, thanks sincerely Don B