Norepinephrine performs its actions on the target cell by binding to and activating adrenergic receptors. The target cell expression of different types of receptors determines the ultimate cellular effect, and thus norepinephrine has
While specific vitamins and minerals do not cause muscle cramps, a deficiency in potassium or magnesium can lead to sports-related leg cramping, according to Everyday Health. Additionally, a deficiency in vitamins E, A, and B causes cramping due to reduced circulation, as explained WeightTraining.com. Keep Learning.
1 Get plenty of vitamin D3, magnesium, potassium, and calcium. Get tested for your blood levels of these and iron, too. Deficiencies are linked to leg cramps.  1,000 IU of vitamin D daily. The best food sources for vitamin D are herring, salmon, sardines, and fortified soy milk.