 [ Symptoms ] i take 10 000 iu of vitamin a palmitate can ii also take a multi vitamin w vitamin a beta carotene [ Disease ] the upper safe limit for vitamin a is 10 000 ius which you are already taking unless you are taking vitamin a for a specific medical reason recommended by your doctor if not then you should not take more vitamin a on top of this taking too much can be harmful can cause dizziness nausea headaches and can even cause very seriou side effects beta carotene is also a form of vitamin a so again i would not take it if you are already taking 10 000 ius of vitamin a