Bladder Issues

[Jacaroo]

I’m a fairly healthy male 62 years of age. I was diagnosed with BPH and required a TURP.  During testing my Urologist also found that my bladder was very large and distended (well over 1200 ML).  He stated because of my bladder condition that I may require self-catheterization post TURP.  I had the TURP and 4 days later the catheter was removed. However, after several hours I was not emptying my bladder completly and had to have a  catheter for another week as they thought possibly swelling from the TURP may be the cause for the retention.  I’m concerned that because of my large distended bladder that the retention may be due to a flaccid bladder.  I dread having to self-catheter, but may have no option.  

My question is; has anyone heard or used a drug called Bethanechol?  Supposedly it’s use is for Nonobstructive urinary retention and retention due to neurogenic bladder. Supposedly it will treat and prevent bladder dysfunction caused by phenothiazines; diagnosis of flaccid or atonic neurogenic bladder.

For those having to perform self catheterization, is/are there a recommended or better or less discomforting type of catheter to use?      

Any input or comment would be appreciated.