I have been told that I can get a better price because I have a low income. I have to write the company that supplies the drug. I have the name of one of my other medicines and I have to register with them. I an using Nitrofuranton 2 times azweek for two years. I have a cronic bladder infection and have tried fifteen different antiboitics. Do I have to register with Macrobid. And if so doyou have form.