After using locacorten vioform ear drops my ear ended up blocked. is this normal?

Yes, not unusual: An external ear infection for which you are using the locacorten vioform drops, can contribute to a blocked feeling in the ear as debris builds. Following inflammation of the skin of the canal during an ear infection, a mixture of dead skin cells, material secreted by the ear to fight the infection can build up in the canal. Often it is necessary to see an ENT specialist for a clean out.