I have been deficient with vitamin D for a long time. Constantly tired and sleepy. After running several tests doctor has prescribed me 4000 IU for 2 months following with 5600 IU.
Have been taking this one for a month now and can feel the energy and improvement of overall health improvement
I bough this product for the whole family and for the 4 months ahead. Basically for all cold season. There was a research that explained why people have more fever and colds in winter than in summer. The answer is simple - SUN and Vitamin D that is derived from sun radiation. In winter we are deprived of vitamin D. I found several reliable resources that recommend a minimum of 4000IUs of Vitamin D for winter period to stay healthy. That's what I went for. Highly recommend this and combine it with zinc for cellular protection. Stay healthy!
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