Modified release formulations with zero-order drug release containing (R)-1-(3-(10,11-Dihydro-5H-dibenzo[a,d]cyclohepten-5-ylidene)-1-propyl)-3-piperidinecarboxylic acid, or a pharmaceutically acceptable salt thereof, dispersed in a polymeric matrix having at least one release rate controlling polymer are useful in treating disorders related to both neurogenic inflammation and non-insulin-dependent diabetes mellitus (NIDDM).
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