Lorazepam can become addicting over a long period of time; however, it can easily be stopped by properly tapering down the dosage without any serious side effects. What is the normal dosage for Ativan? I will presume that it is for anxiety, since that is the most common usage for Ativan. Be sure to consult your doctor or pharmacist for guidance based on your specific condition and current medications before taking lorazepam. To view content sources and attributions, please refer to our editorial policy.Medscape - Anxiety, status epilepticus, sedation-specific dosing for Ativan, IV/IM: Use with caution in mild-to-moderate impairment; not recommended in. Dec 11, - Maximum dose of lorazepam for short term, symptomatic treatment is 4 mg per day for severe, disabling anxiety, and 2 mg per day for severe. Safety and efficacy of parenteral lorazepam have not been established. Specific maximum dosage information not available; the dose required is dependent on.