Medication causing kidney problems?

Thanks to everyone for their support and insights.  This site has been a godsend for me.  I have atrial tachycardia and elevated lipids.  I take Toprol Xl 25 mg twice daily, zetia, 10 mg; ativan 5 mg twice daily (as needed); ambien 5 mg (for sleep) 1 multivitamin; Omega 3 (1000 mg)3 X daily; coQ10 100 mg; daily and aspirin.  I have developed kidney infections twice in the past month (treated with antibiotics).  Could my meds be contributing to my kidney problems?  I will going back on Pravachol 40 mg daily today (it had been temporarily stopped for the last three months due to elevated liver enzymes.)