I haven't looked into whether or not patients have taken high doses of vitamin A for EC. The only vitamin/mineral a specialized blood test showed I wasn't absorbing was vitamin A. I may have been low in other vitamins, but at least I was absorbing it somewhat. I don't know if maybe I just need to add more good fat into my diet (since I had enough bad fat in my diet) like coconut oil to absorb it better. I was still absorbing vitamin D somewhat although it's also fat soluble (and I don't get much sun).
There just seemed to be a link between too little vitamin A and too much vitamin A as in Accutance (and Accutane is fake chemical form of vitamin which stores in fat cells so I don't know how it's eliminated). Too little vitamin A causes lip peeling just like too much vitamin A.
I've been too afraid to use vitamin A supplements because I assumed if my body wasn't absorbing it, it'd be stored in my liver or fat cells.
I've been thinking of going vegetarian so I don't know about liver. However, I'm going to try juicing carrots