Emergen-C is widely used by travelers to provide nutritional support and help prevent infections, colds, flu, and sore throats. Besides 1000 mg of vitamin C, it also has key B vitamins, and 32 mineral complexes, including potassium, calcium, magnesium, manganese, sodium, chromium & zinc. Add water, and it makes a great-tasting, orange-flavored drink to support healthy metabolic function, boost immunity, and give you a burst of non-caffeinated energy. 36 packets.