Even though I am only 23 years old, my knees sound like they belong to some one closer to 80. They have given me problems since I was around 15 and have gotten progressively worse. They creak, crack, ache, and with the wrong move they send sharp pains through my leg. Over the counter pain relievers do help, but years of continued use has done some damage to my stomach. I bought this supplement hoping it would let me lay off the pain relievers for a while. Even though the packaging says joint comfort in 7 days, I gave it a whole month to do its work. Unfortunately, I saw no improvement. I thought that the change had been gradual enough I might not have noticed, so I quit taking the supplement and still had no change. I feel like I gave it ample opportunity to work and was genuinely disappointed when it didn't. The pills are too large for me to swallow hole, taste horrible, and are extremely hard to break. They will not fit in my pill cutter, so I had to order another online just for this supplement.