My doctor asked me to use oxerute cd (fourrts labs) tablets for my piles treatment. But in the market two variants are available with same brand name. 1) troxerutin with citrus bioflavonoids and 2) troxerutin with calcium dobesilate. It is quite surprising to see same brand name tablets with two different formulations. Can you tell me may I use any of these two combinations? How drug control authorities are allowing like this as it is confusing to a common man like me. Pl explain.