What are the effects of loratadine tablets?
Nov 06, 2025
Source: Cainiu Health
Dr. Yang Ziqi
Introduction
In general, loratadine tablets primarily help relieve skin itching, reduce symptoms of urticaria, improve allergic rhinitis symptoms, alleviate eye allergy discomfort, and ease symptoms of allergic conjunctivitis. If you experience allergy-related discomfort, it is recommended to use this medication under the guidance of a doctor or pharmacist. When taking loratadine tablets, follow the dosage instructions on the label or as prescribed by your doctor, and do not exceed the recommended dose.
Generally, the main effects of loratadine tablets include relieving skin itching, reducing symptoms of urticaria, improving allergic rhinitis symptoms, alleviating eye allergy discomfort, and easing symptoms of allergic conjunctivitis. If you experience allergy-related discomfort, it is recommended to use this medication under the guidance of a doctor or pharmacist. Specific details are as follows:
1. Relieving Skin Itching
Loratadine tablets belong to antihistamines and work by blocking the binding of histamine to histamine receptors on the skin and mucous membranes, thereby reducing histamine-induced allergic reactions. When skin itching occurs due to allergies, taking loratadine can inhibit the transmission of itch signals, reduce the urge to scratch, and help restore comfort to the skin.
2. Reducing Symptoms of Urticaria
Urticaria is caused by allergic reactions leading to dilation of small blood vessels in the skin and mucous membranes, manifesting as wheals and erythematous rashes. Loratadine tablets can inhibit vasodilation and reduce the release of inflammatory mediators, thus decreasing the size of wheals, lightening redness, relieving associated itching, and shortening the duration of urticaria episodes.
3. Improving Symptoms of Allergic Rhinitis
During an allergic rhinitis attack, histamine stimulates the nasal mucosa, causing symptoms such as sneezing, runny nose, and nasal congestion. Loratadine tablets block the action of histamine on the nasal mucosa, reduce nasal secretions, relieve nasal obstruction, decrease the frequency of sneezing and runny nose, and improve nasal breathing.
4. Alleviating Eye Allergy Discomfort
After exposure to allergens, histamine release in the eyes can cause itching and eyelid swelling. Loratadine tablets suppress histamine activity, reduce ocular allergic reactions, relieve eye itching, and lessen eyelid swelling. This helps prevent worsening eye discomfort or potential infections caused by frequent eye rubbing.
5. Reducing Symptoms of Allergic Conjunctivitis
Allergic conjunctivitis is characterized by conjunctival hyperemia and increased eye discharge. Loratadine tablets reduce inflammatory responses in the conjunctiva, alleviate redness, decrease mucus production, help restore normal eye condition, and prevent vision obstruction that may interfere with daily activities.
When taking loratadine tablets, follow the dosage instructions on the label or as prescribed by a healthcare provider; do not exceed the recommended dose. Some individuals may experience drowsiness or fatigue after taking the medication. If these effects occur, avoid driving or operating precision instruments. If allergy symptoms do not improve within three days of treatment, or if symptoms worsen (e.g., rash exacerbation, difficulty breathing), seek medical attention promptly to adjust the treatment plan.
