Slow-Mag Fizzy 10 Effervescent Tablets

This is the 10-tablet tube of Slow-Mag Fizzy, a convenient size for your sports bag, for travel or for trying the effervescent format before buying a larger pack. Every muscle contraction uses calcium to tighten and magnesium to release. Magnesium also helps regulate the nervous system's stress response and supports normal heart rhythm and energy production. Vitamin C is water-soluble and cannot be stored, so immune cells rely on a regular supply. It is also the cofactor for collagen formation, which makes it important for skin, gums and wound healing.

Race day, a long hike or a week of heavy training is when your magnesium needs peak. If you train hard, sweat a lot, take a water tablet or a stomach-acid reducer, or simply wake up with calf cramps, your magnesium stores are probably running behind what your muscles and nerves use each day.