Mar 1, - The peak plasma level of Lorazepam from a 2 mg dose is approximately 20 ng/mL. The mean Lorazepam is not recommended for use in patients with a primary Convulsions/seizures may be more common in patients with. Indications, dose, contra-indications, side-effects, interactions, cautions, warnings and Directions for administration; Patient and carer advice; Medicinal forms 25–30 micrograms/kg every 6 hours if required; usual dose – mg every 6. Mar 17, - Lorazepam may be habit-forming, so do not take higher doses of the medication or use it for a longer time than your doctor recommends. The most common side effects of lorazepam oral tablets and concentrate solution are.