Table Clinical Features and Treatment of Specic Toxic Syndromes and (Valium), lorazepam (Ativan) Nausea, vomiting, diaClinical Toxicity Features (Lab lavage, wholebowel irrigation Antidote: glucagon, calcium chloride Antidote: kit. Aug 6, - Read about the signs and causes of an Ativan overdose and what to do if Discuss recovery plans with your healthcare provider and mention. Jun 30, - Patients with cocaine toxicity may be combative, aggressive, and disoriented, and have delusions of persecution or hallucinations. Caution is.