Back Pain
"Works well to treat moderate pain and increase flexibility.  If new to usage you can expect a &quot;head buzz&quot; but with continued usage the euphoria dissipates, but the pharmaceutical effects remain.  Does tend to cause constipation, but by comparison to some other pain killers out there, it is far more manageable.  Prescribed to me with muscle relaxers, but the muscle relaxers make me too sleepy to function."