Yes, Marinol is not a natural marijuana derivative, but a synthetic one. Plant based marijuana contains many cannabinoids like tetrahydrocannabinol
, cannabidiol and others. But Marinol contains only dronabinol, which is a synthetically produced isomer of tetrahydrocannabinol. It is US FDA approved only for treatment of anorexia in AIDS patients and for refractory nausea
and vomiting of patients undergoing chemotherapy
. Perhaps that is why you are finding it difficult to get a prescription for bladder spasms
Hope this is helpful. Best wishes.