 Single center, double blinded, randomized placebo-controlled study comparing effect of transdermal preparations of lidocaine Nitroglycerine and lidocaine placebo on radial artery spasm and procedural success in patients undergoing transradial coronary angiograms and interventions. All patients will receive standard parenteral cocktail including intraarterial or intravenous heparin and intraarterial nitroglycerine and or verapamil. Exact doses and combinations would be at the discretion of individual provider based on patients hemodynamic status and comorbid conditions. 