★★★★☆
In response to Stacy from Dixon, IL. I recently spoke with a rheumatologist who told me shin splints can be caused from a lack of Vit. D. He suggested I take Vit D-3 1000 IU in the summer and 1800 IU in the winter. The dose may be different for a teenager. I haven't started yet so I can't tell you if it works or not but I'm going to try it
