New Pure Encapsulations Potassium Magnesium Citrate 180 pcs For the supply with increased electrolyte requirements Potassium contributes to the maintenance of a normal blood pressure. Together with magnesium, it contributes to the normal functioning of the nervous system and muscles. Magnesium also contributes to normal psychological functioning and the reduction of tiredness and fatigue. Pure guarantees based on high-quality pure substances Encapsulations the highest possible quality standards and ensures maximum tolerability and optimal bioavailability of the ingredients used. The American Low Value Shipment Regulatory Modernization Act is active since March 2016 and increases the duty and tax free value of goods American citiziens could import from other countries by mail from $200 to $800 as well as no formal customs procedures are required. The American Low Value Shipment Regulatory Modernization Act is active since March 2016 and increases the duty and tax free value of goods American citiziens could import from other countries by mail from $200 to $800 as well as no formal customs procedures are required