Urinary Tract Stones
"I have been on 300 mg Allopurinol daily for 7-8 years to control kidney stones.  My experience has been very satisfactory.  The pill color was ORANGE  for all the years until my last 
refill.  I get a  90 count refill and the last TWO refills  have been WHITE with the imprint AX and without any numerals.  I  have not unsealed the last one of those two refills as I have a few left in the first one.  
  However  I have been having a pain in my left side that I finally have determined kidney
stone symptom.  In recent reflecting I believe this has started a within the period when I began with the WHITE  AX  pills.  Would appreciate your comments.  I do intend to consult my local pharmacist this coming week.  "