Wow! What a weird set of symptoms. I'm not surprised he had huge issues, though. This confirms what I've always known: vitamins A and D are toxic in excessive quantities; most others not so much. The video makes clear that the ability to get rid of the water-soluble ones is the main reason they give less trouble.
I knew a guy who had excess calcium, due to drinking over a gallon of milk a day. It appears it may have been the vitamin D added to the milk, more than the calcium, that got to him.