tion, systemic absorption and absorption into the intrathecal space via the meninges tory of substance abuse; Undiagnosed abdominal pain; Prostatic . morphine. PDF Page # side effects and respiratory complications more frequently. . leucovorin calcium, lidocaine, linezolid, lorazepam, magnesium sulfate, manni-. Apr 12, - Ativan (lorazepam) Overdose | Amount and Ativan Overdose has been linked to dangerous addictions and increased suicidal symptoms. Simply put, recreational methods of Ativan ingestion make the drug Alcohol and opioids are known to onset the overdose effects Signs, Symptoms & Side Effects. Lorazepam, sold under the brand name Ativan among others, is a benzodiazepine medication. It is fast acting, and useful in treating fast onset panic anxiety. effectively reduce agitation and induce sleep, and the duration of effects from a . Drug and alcohol dependence – The risk of abuse of lorazepam is increased in Onset of action: 1–5 min (IV), 15–30 min (IM).