Disclosed in certain embodiments is an oral dosage form comprising a plurality of particles, each particle comprising a compressed core comprising: (i) an active agent susceptible to abuse and (ii) a gelling agent wherein the plurality of particles contains a therapeutically or prophylactically effective amount of the active agent and wherein the viscosity of the dosage form mixed with from about 0.5 to about 10 ml of an aqueous liquid is unsuitable for parenteral or nasal administration.
