Which of the following symptoms is not associated with amphetamine/cocaine intoxication?

Bradycardia, or a slowed heart rate, is not typically associated with amphetamine or cocaine intoxication. These substances are stimulants, and their effects generally lead to increased cardiovascular activity, which can manifest as tachycardia (an increased heart rate) rather than bradycardia.

In contrast, weight loss is common due to appetite suppression often experienced with stimulant use. Increased agitation or anger may also occur as stimulants can elevate arousal levels and lead to heightened emotional responses. Auditory hallucinations can emerge in cases of high doses or prolonged use, as stimulants can provoke psychotic symptoms, including hallucinations or delusions. Therefore, bradycardia is the only symptom in this list that is not typically associated with the effects of amphetamines or cocaine intoxication.