I tried weaning myself off this a few months ago. Big mistake. Boy did I feel it! I have DJD, a crumbling arthritic knee, and a bulging lumbar disc. Taking this makes the difference in being able to do my everyday workouts (which are low impact, but strenuous) and walk my best friend Will E or having to take Ibuprofen and pray for the pain to subside. Take this, you won't be disappointed. It's worth every penny.