My older dog started limping whenever she would get up from laying down. I knew it was from arthritis and decided to try these chews. Surprisingly, it’s been exactly a week that I’ve been giving these to her, and she is not limping anymore! I thought these would help, because of the ingredients, but I was shocked at how fast they work! I’ve been giving her one chew in the morning, and one at night. I will absolutely continue to give her these. I have not noticed any side effects and she loves them!