Vivacaine - Bupivacaine HCl. 0.5 % and Epinephrine 1:200,000. Box of 50 - 1.8 mL Cartridges. Helps to achieve anesthesia times 2 to 3 times longer than lidocaine and mepivacaine, in many cases up to 7 hours. Average onset of action is usually 2 to 10 minutes. No-methylparaben formulation and latex free components help avoid allergic reactions on sensitive patients. Packages in 5 blister packs with 10 x 1.8ml glass cartridges each. **Anesthetics are non-returnable.