No, it is not. Yurelax contains ciclobenzaprine, a muscle relaxant with action on skeletal striated muscle but not on the bladder or the prostate. It is used mainly for fibromyalgia and other diseases with muscle contractures.
Omnic contains tamsulosin, which is an alfa-blocker and relaxes the smooth muscle of the bladder, the bladder neck and the urethra, thus improving urinary flow.
If yo have symptoms related with urinating, Omnic would be probably the best treatment,