Nutriflex (original formula) is an advanced joint care formula that features the supreme effectiveness of powerful herbal ingredients for inflammation and pain relief. Don't let Joint pain and Arthritis slow you down - Take Nutriflex Original Formula. Nutriflex is a liquid formula containing effective ingredients shown to help diminish the pain, inflammation and discomfort associated with joint pain. It also helps protect against the deterioration of cartilages and just one tablespoon a day.