K Saha, R Agrawal, and S Mohapatra. 2021. “Amlodipine Potentiates Antinociceptive Activity of Ketorolac and Tramadol – An Experimental Study”. International Journal of Research in Pharmacology & Pharmacotherapeutics 5 (2), 184-91. https://doi.org/10.61096/ijrpp.v5.iss2.2016.184-191.