<qa>  What is the primary endpoint of the study?The purpose of this study is to assess the effect of Reflex Plus on osteoarthritisOA patients. The duration of the study is 12 24 weeks excluding the screening period of approximate 1 week. The test product being studied is Reflex Plus is composed of Collagen hydrolysate and Rosehip extract, it is a health supplement. It is expected to help in the building of cartilage for efficient joint functioning and relieving pain associated with arthritis It helps in cartilage protection and joint pain management.The primary endpoint of the study is the change in knee pain as measured by the WOMAC osteoarthritis OA index sum score between baseline and last visit in the comparison between IP and placebo. 