Tin­ni­tus: Turn­ing Down the Vol­ume (Med­Page Today): “The drug D‑cycloserine was no more effec­tive than place­bo when used with a com­put­er-based cog­ni­tive train­ing pro­gram for reliev­ing per­sis­tent ear ring­ing in patients with tin­ni­tus in a small clin­i­cal study, but patients did report few­er cog­ni­tive difficulties… More than 40 mil­lion peo­ple in the U.S. are believed to…