The higher the dose and the longer the drug is taken for, the greater the risk of experiencing unpleasant withdrawal symptoms.

Tell your doctor if you become pregnant during treatment. On discontinuation, lorazepam serum levels become negligible after 3 days and undetectable after about a week. Richards. On discontinuation, lorazepam serum levels become negligible after 3 days and undetectable after about a week. This medication may be habit-forming and should be used only by the person it was prescribed for. 4%). * Pregnancy and breast feeding – Lorazepam belongs to the Food and Drug Administration (FDA) pregnancy category D, which means that it is likely to cause harm to the developing baby, if taken during the first trimester of pregnancy. This is not a complete list of side effects and others may occur. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors.