Abstract: Anti-inflammatory pharmaceutical compositions with an ibuprofen base which eliminate the bitter taste, the burning in the throat and the topical toxicity at the level of the intestinal wall when their effervescent aqueous solutions are taken. The proportions among the main ingredients of each dose are the following: ibuprofen, 200 to 800 mg or ibuprofen sodium salt, 221.3 to 885.2 mg; sodium bicarbonate, 2.100 to 8.402 g; and citric acid, 0.450 to 1.800 g.