I thought I would update you all on my daghters 
  thin Arab and her remarkable weight gain after giving the Panacur purge about 
  a month ago.
   
  We had been shoveling feed into this mare all 
  winter (free choices of grass, great oat, and hefty helpings of alfalfa hay, 
  plus huge tubs of beet pulp, corn oil, mature horse, etc).  She never did 
  pick up weight, so despite feeling like my worming program was adequate, I 
  finally wised up and took in a fecal.  It showed encysted 
  strongyles.  I had to want another month and a haf becuase I had just 
  wormed her, but then did the Panacur double dose for five days.  I also 
  did the other five horses, to keep consistent. None of the others had a 
  problem keeping weight on, but I figured if she was carrying parasites, they 
  might be also.....I used the liquid suspension (sold for cattle) and syringed 
  it down their throats, far easier than the paste and half the 
  cost!
   
  The fecal on Breeze just came back 
  negative.....we checked it three weeks after the worming.
   
  But........all and claims they make about drastic 
  change are true in our case!  This mare not only picked up weight, she 
  picked up
  APPETITE!!!  The cleans everything up; her 
  coat looks better, and she is round!!
   
  I don't see much of a change with the other 
  horses, but their spring coats are sure comming in nice!
   
  Karen