What is Silencil Supplement? And Does Silencil Really Work? This is a nutritional supplement pill used to help treat Tinnitus. The ingredient profile come from well researched natural sources known for being very effective as well as safe and shown to really work. Tinnitus is a common problem that creates a perception of ringing or hissing type noises in the ears. Cindy Walters states, "Tinnitus is actually a symptom of some sort of underlying condition. It usually is not a sign of a serious health condition but can be incredibly annoying to anyone who suffers from it and it can worsen especially with age. The great news is tinnitus can be improved greatly with certain treatments like supplements."