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 Vitamin D: Deficiency in vitamin D is known to cause leg cramps at night. In addition, it may also cause weakness or numbness in the legs. A physician may best be able to ascertain this by taking a blood test to assess the extent of this deficiency.  Vitamin B: Vitamin B is a water soluble vitamin.