Because it's relevant to this thread. I *was* taking Vitamin A in the morning, but I have a feeling I was over-dosing on it. Vitamin A toxicity causes fatigue and I was very tired for a while there.
On vitamin A: if you like carrots, you are likely to meet the requirements or even overdose.
One medium carrot already contains 200%+ of the daily requirements. If you eat 3 or 4 carrots every week, you are already meeting minimum requirements. If you eat more, you may risk overdosing.
http://www.nutritiondata.com/facts/vegetables-and-vegetable-products/2383/2