Fortagesic was compared with Paramol 118 in a fourteen day single-blind crossover study in patients with moderate pain due to osteoarthritis. Both preparations were shown to be similarly effective. More side-effects were seen with Paramol 118 than with Fortagesic and more patients preferred Fortagesic. These differences were not statistically significant, but it is concluded that Fortagesic is a useful effective analgesic for standard use in moderate pain.