Pregabalin and bromonordiazepam found in ‘alprazolam’ pill

A white pressed pill expected to contain only diazepam was instead found to contain clonazepam, tapentadol, donepezil and denatonium as well as diazepam. What does this mean? Diazepam and clonazepam are both benzodiazepines. Benzos are drugs typically used to sedate and treat anxiety, with diazepam having a shorter duration than clonazepam, which is more potent.