Cabot Health Magnesium Ultra Potent Powder 450g. Magnesium is required for energy production, muscle and nerve function, blood pressure regulation, bone strength and is vital for maintaining overall health. Modern day diets are at high risk for being insufficient in magnesium due to poor mineral content in the soil and food processing. This is where a good quality magnesium supplement can be beneficial in supporting vital processes in the body. May be of assistance to reduce stress and anxiety, decrease muscle cramps, reduce frequency and and severity of migraines and headaches, improve quality and quantity of sleep, stabalise blood sugar, improve mood, maintain digestive function, normalise blood pressure, improve energy and strengthen bones.