Bromidic

a. 1. of or pertaining to bromide (definition 2). [ WordNet 1.5 ]

2. conventional or trite; repeated too often; overfamiliar through overuse -- of sayings, assertions, or discourses; as, bromidic sermons.
Syn. -- commonplace, hackneyed, shopworn, threadbare, timeworn, tired, trite, well-worn. [ WordNet 1.5 ]