Tramadol and caffeine produce synergistic interactions on antinociception measured in a formalin model
M Díaz-Reval, Norma Carrillo-Munguía, Maribel Martínez-Casas, Ma González-Trujano (2010) Tramadol and caffeine produce synergistic interactions on antinociception measured in a formalin model Pharmacol Biochem Behav (IF: 3) 97(2) 357-62Links
http://www.ncbi.nlm.nih.gov/pubmed/20837047http://dx.doi.org/10.1016/j.pbb.2010.09.004
