Unimark Remedies Limited manufactures Solifenacin for Treatment of Overactive Bladder. Unimark Remedies Limited is an ISO 14001 and 18001 registered company that manufactures pharmacueticals like cephalosporins, carbapenems, antibacterials and antimicrobials. The company also has approvals from US FDA, EDQM and WHO. Solifenacin for Treatment of Overactive Bladder is a urinary antispasmodic of the antimuscarinic class. It is used in the treatment of overactive bladder with or without urge incontinence. It works by relaxing the bladder muscles to prevent urgent, frequent, or uncontrolled urination. Solifenacin comes in a tablet form.