One of the side effects of a lack of magnesium in the body is muscle cramps in the leg area. Magnesium deficiency is usually caused by a diet low in magnesium, increased sweating, intense physical exertion, or certain medications. This product contains a unique magnesium salt extracted from the Dead Sea. With the help of advanced screening technology, the size of the particles and the density of the active substance, in combination with vitamin B6, increases absorption and the addition of vitamin E, which is known to be beneficial in situations of nocturnal leg muscle cramps. The effect of the product will start on the first night of use! Instructions for use: 1-2 capsules at night before going to bed. Kosher Parve Badatz Vegan friendly 50 capsules