Practi-Lidocaine 1%™ 200 mg/20 mL (10 mg/mL) Vial For TrainingPracti Lidocaine 1% Vial for clinical training. Practi Lidocaine 1% 200 mg 20 mL (10 mg mL) vial accurately simulates a multi dose vial of lidocaine (Xylocaine), an antiarrhythmic and anesthetic drug used to treat irregular heartbeats (arrhythmias), relieve pain, and numb the skin. Nursing, Dental, EMT, EMS and Paramedic students learn a variety of skills including dosage calculations, sterile techniques of vial handling, air replacement and pressure