Overdosing on Vitamins??

jpwic

I just started taking a multivitamin (Centrum, Men's formula) and was recommended that I take a fish liver oil capsule as well (for the three omegas). I may just be freaking myself out by reading too much and not understanding enough but how likely is it to get Hypervitaminosis (particularily A as liver oils are high in Vitamin A), am I freaking myself out for no reason or is it something I should watch out for??

Thank you for your help!