I bought this to ease the pain I have, while sleeping. The pain was always surrounding my skull, neck, and shoulders..Sometimes numbness down my arm. I was amazed that this worked so quickly ! I called a friend, to recommend this to her, as she has fibromyalgia.
I now can sleep through the night, and am waking up with no pain.
Advantages: The drops are much easier to take than pills
Disadvantages: I do have to remember not to use this 10 minutes before or after eating, or brushing my teeth