Disclosed herein are pharmaceutical compositions having a mixture of at least one active agent and an ion exchange resin, such that the composition releases about 75% or more of the at least one active agent within about 1 hour as measured by in-vitro dissolution in a USP Apparatus 2 (paddle) at about 50 rpm in about 900 ml 0.1N HCl at about 37° C. and related methods. Also disclosed herein are pharmaceutical compositions having a mixture of a drug susceptible to abuse, a non-opioid analgesic and an ion exchange resin, the composition further including at least one gelling agent and related methods.
