This study was designed to determine whether COREG MR is more effective than TOPROL-XL in reducing microalbuminuria in type 2 diabetic or non-diabetic patients with high blood pressure and microalbuminuria.

Inclusion criteria:

• Documented history of hypertension.
• Must have been taking an ACE (angiotensin converting enzyme) inhibitor either alone or as part of an antihypertensive regimen for at least 8 weeks.
• Persistent microalbuminuria.

Exclusion criteria:

• History of heart attack, stroke, congestive heart failure, arrhythmia, type 1 or uncontrolled type 2 diabetes mellitus, liver or renal disease.
• Has been taking any non-ocular beta-blockers for any indication within three months prior to Pre-screening.

Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.