Maxavita MaxaFlex 900g. Maxavita MaxaFlex is a fast acting joint supplement that combines the soothing qualities of Green Lipped Mussel with Glucosamine, MSM and HA to offer short and long term joint health and support. Maxavita MaxaFlex contains SuPernaâ ¢ (Green Lipped Mussel extract) which contains high levels of Omega-3 ETA fatty acids known for their soothing properties. Green Lipped Mussel works quickly to soothe stiff joints. MaxaFlex also contains Glucosamine, MSM and HA to help maintain healthy, supple and flexible joints. Read more… MaxaFlex offers a palatable Alfalfa base and contains no listed banned substances. Results visible in 7-10 days. 900g - 30 day supply.