Jigsaw Health MAG SRT Magnesium Supplement Mag SRT B-Free, 240 Count is a vegan-safe supplement that contains no chemical additives, gluten, yeast, soy, pesticides, lactose, carnauba wax, or preservatives. It includes magnesium (as dimagnesium malate), vitamin C (as ascorbyl palmitate), vitamin B6 (as pyridoxal-5-phosphate), folate (as Quatrefolic® 5MTHF), vitamin B12 (as methylcobalamin), and malic acid (as dimagnesium malate). The malate form of magnesium is 85% absorbable. The product has a proprietary sustained release technology (SRT) that releases magnesium slowly over eight hours. Magnesium is crucial for promoting healthy muscle tone, heart health, energy, sleep, and overall health. Jigsaw Health recommends a dose of 500mg per day, or more as bowel tolerance allows, to replenish magnesium stores. Quatrefolic® and vitamin B6 are included to enhance magnesium's effect, supporting healthy muscular tone, enhancing overall energy, and promoting stable mood, calmness, and better sleep. Vitamin B6 and Vitamin B12 are included as they work synergistically with magnesium to help relax muscles and nerves. The active forms of these vitamins are added because they are difficult to convert into the forms the body needs. This supplement has received positive reviews from customers, with some stating they have experienced immediate results, such as decreased muscle tension, more energy, and decreased anxious feelings.