Kool Boom C + M - Vitamina C 2,000 Mg Más Magnesio - 30 Stick Packets (.25 Oz - 7g). This convenient and portable supplement provides a powerful dose of Vitamin C and Magnesium to support immune function and overall wellness. It’s a great way to boost your daily intake of these essential nutrients. Each packet contains 2,000mg of Vitamin C and a boost of Magnesium.