Loratadine — what it is and who it helps

Loratadine is a long‑acting antihistamine used to treat hay fever, seasonal allergies, and itchy skin rashes. It blocks histamine, the chemical that causes sneezing, runny nose, itchy eyes, and hives. Most people choose loratadine because it usually does not cause drowsiness like older antihistamines.

How to use loratadine

Typical adult dose is 10 mg once a day. For children, dosing depends on age and product form: syrup or chewable tablets often list exact doses for 2–5 years and 6–12 years. Follow the package or your doctor’s instructions. Take it at the same time each day for steady control. You can take loratadine with or without food.

Expect relief within 1–3 hours and protection that lasts about 24 hours. If symptoms return before 24 hours, talk with your clinician instead of increasing the dose. Loratadine is available over the counter in many countries, so you usually don’t need a prescription.

Side effects, warnings, and interactions

Common side effects are mild: headache, dry mouth, and sometimes fatigue. Severe allergic reactions to loratadine are rare. Seek emergency care for swelling of the face, lips, tongue, or trouble breathing.

Certain medicines can change how loratadine works. Strong antibiotics or antifungals like erythromycin or ketoconazole and drugs like cimetidine may raise loratadine levels. Alcohol and other sedatives can increase drowsiness even though loratadine is less sedating. If you have liver disease, a lower dose may be needed. Always tell your doctor about all medicines and supplements you take.

If you are pregnant or breastfeeding, check with your healthcare provider before using loratadine. They can weigh the benefits and risks for your situation.

Overdose symptoms may include very fast heartbeat, severe drowsiness, or restlessness. Call poison control or seek medical help if you suspect an overdose.

Practical tips and buying advice

Compare active ingredient and strength when shopping: some brands and generics may look different but contain the same loratadine. Buy from reputable pharmacies or well‑known online stores. Avoid sites that offer suspiciously low prices, lack contact details, or do not use secure payment methods. Read product reviews and check return policies.

Store loratadine at room temperature, away from moisture and direct sunlight. Keep it out of reach of children. If your symptoms don’t improve after a few days or get worse, see a doctor — you may need a different medicine or an exam for another problem.

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