Other used drugs were Ca-antagonists (4.2% vs. 7.1%), diuretics (2.1% in the control group), statins (4.2% vs. 4.8%), phlebotonics (2.1% vs. 4.8%), thionamide (4.2% vs. 2.4%), thyroid hormones (4.2% vs. 14.3%), proton pump inhibitors (6.3% vs. 19.0%), bronchodilator (4.8% in RA group), H1-antagonists (4.2% in control group), xanthine oxidase inhibitor (2.1% in control group), prostaglandin analogues (2.1% in control group), and ergot alkaloids (2.1% in control group). Here, XDH is linked to rheumatoid arthritis.