I was getting cramps in my lower back from D-Bol also.
As far as I know, this is from water retention.
So, I tried a little lasix this time (20mg ED 3-4 days) after being on the D-Bol for about a week. So far not a trace of lower back pain.
I would not use the Lasix that often though. Maybe Twice during a 4 week run of D-Bol at the begining of a cycle.
Diuretics can be very dangerous! In moderation only!
JMHO graybass