Electrochemical behaviour of famotidine has been Studied at composite polymer membrane working electrode. Cyclic voltammetric method has been developed for the determination of drug in pharmaceutical formulation. A well-defined anodic peak was observed for famotidine in the entire pH range. The current increases steadily with scan rate and concentration. This composite film showed good catalytic behaviour, which includes a good current response. The result is compared with the glassy carbon electrode and it was found that the current with composite polymer electrode is of the order of 18.60 mA whereas with glassy carbon electrode it was around 565.00 mu A.