Wisher, please go to your doctor, don't take any supplements prior to your visit, and have them do some testing. Fatigue, and tiring easily may not be of much concern, but it can also be a warning of something very serious. The first warning symptom I had when I was diagnosed with cancer was fatigue. Later on, after chemo, I again experienced fatigue. I was tested, and they found out I was very low on Vitamin D, which is not uncommon after chemo, and it was winter, so I wasn't getting out into the sun enough for my body to produce enough. I was put on a very high dose of prescription Vitamin D. The results were almost immediate. I had to sleep, but when I awoke I felt rested, and had some energy. The problem was that the dosage was so high, and I was to take it every second day, so I experienced plenty of energy when I first took it, but then was depleted by the time I was to take it again. Sort of a roller coaster effect. I went and bought a bottle of D3, 5000 iu, and took it daily along with my once a day multi-vitamin. That provided enough on a steady basis to stop the roller coaster effect, and my energy level was good. Later on in the spring, and summer when I was getting enough sun, I didn't need to take any extra.
