How long you need to take loratadine citrate tablets depends mainly on the patient’s condition. If the patient is experiencing acute urticaria, 1-2 weeks of oral administration is perfectly fine. Some patients with chronic urticaria may need to take this medication orally for a longer period of time, at least 1-2 months. If the eczema is eczema and can be controlled in a short period of time, the drug can usually be stopped in about 1 week. However, some patients who develop subacute eczema still need to be treated and can continue to take the medication orally, in some cases for about 1 month. If a patient develops acute atopic dermatitis that can be controlled within 3-4 days of taking this medication orally, it can also be stopped in time.