A low-calorie, joint-strengthening way to feel the good every day. Specifically for those who live an active, high-energy and low-calorie life, we subtracted all but 5 calories and added MSM for even more joint-nourishing benefits. Just pour a nutrient-rich packet of Emergen-C Lite with MSM. Naturally flavored and naturally sweetened, each fizzy, citrus-y packet brings a rush of vitamins, antioxidants and minerals including 1,000 mg of vitamin C and 1,000 mg of MSM. Strengthen joints, boost immunity, increase metabolic function, and ignite your energy level without caffeine, and with only five calories. If feeling good while fortifying your joints is your things you've found the right box. Essential in the production of collagen, the main constituent of connective tissue of the bones, which helps maintain the strength and flexibility of the bones. Vitamin B12 helps maintain nerve and red flood cells. An essential component for a properly functioning nervous system, it helps to synthesize DNA, the genetic material in all cells. (METH-il-sul-FON-il-METH-ane) is a source of sulfur. Sulfur plays a critical role in maintaining the elasticity and flexibility of the connective tissues that make up joints.