Upon being abused or taken intranasally or intravenously, the following are common side effects, in addition to the initial euphoric "high": Vigor (hyperactivity, hypervigilance, restlessness, etc.), Interpersonal changes (anxiety, alertness, being overly talkative or sensitive), Impaired judgement (along with quick anger and fighting), Paranoia (and corresponding auditory and tactile hallucinations), and Depressiveness (suicidal ideation, depression, emotional blunting and irritability).
