Apr 28, - Valium and other benzodiazepines have a high potential for abuse. However, let your doctor know if you have any unusual side effects. Jump to Side Effects - Valium has side effects with proper use, but these are temporary and It is commonly believed that over 1 million people have been. Jump to What side effects are possible with this medication? - The following side effects have been reported by at least 1% of people taking this.