I took the Naturion collagen daily 2 packets upon my return to Singapore. I noticed significant improvement in joint mobility & reduction in stiffness of the affected left knee within 3 days of therapy. Now that I am on the 3rd week of collagen, I can walk fairly freely without a limp, and able to climb stair case without difficult. This improvement occured even before I started my physiotherapy. Thank you for introducing the Naturion collagen therapy; it certainly makes a remarkable difference in my recovery from meniscus injury.