M.s.symptoms More Condition_symptoms I Take A Multi-vitamin Every Day. Is It Safe To Also Take A High Potency B-Complex Vitamin On Top Of That?

I take a multi-vitamin every day. Is it safe to also take a high potency B-Complex vitamin on top of that? - m.s.symptoms more condition_symptoms

I remember a few years ago my doctor told me to take B vitamins for mood swings and PMS symptoms. I know they are just vitamins, but some things can be dangerous when used in large quantities is taken.