Yes, I used the prelief, also pyridium, baking soda - by mouth to alkalize and in bath water to draw out toxins (helps with burning).
I did six once a week BCG treatments, half strength after second treatment.3 months later there were three more papillary tumors, had them removed, started another round of BCG but with the IC could not hold it in, first one in about 45 minutes, second one I lost right at the hospital, so I quit. Did fine for 1 1/2 years then another papillary with CIS at base. Removed but a year latter CIS returned, had my bladder removed and an Indiana Pouch 8 weeks ago. CIS is nothing to mess around with so please be careful. I had three "clear" cystos one only a month before being sent to a uro/oncologist because my symptoms were so severe. My uro and I thought it was the IC but uro/onc did another cysto and said it was CIS (they do look the similar)and recommened removing my bladder. Thankfully I listened to him because my bladder was full of cancer.
Hopefully the BCG cystitis will heal and you can finish your treatments and they will work for you.
Take care,
Tammy