Oct 10, - In the UK, lorazepam comes as lorazepam 1mg tablets, lorazepam mg tablets and lorazepam liquid. The lorazepam dosage your doctor. Measure the oral liquid using the marked medicine dropper that comes with the package. Dilute each Older adults At first, 1 to 2 mg in divided doses per day. Read more about the prescription drug LORAZEPAM CONCENTRATE - ORAL. HOW TO USE: This medication is a high-strength concentrated liquid. Older adults may be more sensitive to the side effects of this drug, especially loss of.