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This is an information resource — not medical advice.

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🚨 If you are experiencing a medical emergency or think you may have taken too much of a medication, call emergency services (911 in the US) or go to your nearest emergency room immediately.

Second-Generation Antihistamine✓ Over-the-counter

What Is Loratadine (Claritin) Used For?

Brand names: Claritin, Alavert

Loratadine is a popular second-generation antihistamine known for causing minimal drowsiness, making it a preferred choice for daytime allergy relief.

What is Loratadine used for?

Hay fever (seasonal allergies)
Year-round allergies
Hives (urticaria)
Allergic skin reactions
Pet allergies
Allergic conjunctivitis

How does Loratadine work?

Loratadine blocks peripheral histamine H1 receptors. It poorly crosses the blood-brain barrier, which is why it causes less drowsiness than older antihistamines.

Dosage information

💊Available forms

10mg tablets
10mg dissolving tablets
5mg/5ml syrup
5mg chewable tablets (children's)

📏Typical dosage

Adults and children over 6: 10mg once daily. Children 2–6: 5mg once daily. Any time with or without food.

⚠️ Dosage varies by individual. Always follow your doctor's or pharmacist's instructions — never self-dose based on general information.

Side effects

Common

Headache
Dry mouth
Drowsiness (rare)
Fatigue
Stomach upset

⚠️ Serious — contact your doctor

Severe allergic reaction to the drug (rare)
Fast or irregular heartbeat (rare, very high doses)

Important warnings

Lower doses for liver disease

Dissolving tablets may contain phenylalanine — caution in PKU

Some individuals still experience sedation despite being 'non-drowsy'

Drug interactions

These substances may interact with Loratadine. This is not a complete list — always tell your doctor and pharmacist ALL medications and supplements you take.

Alcohol (may increase drowsiness)Ketoconazole and erythromycin (increase levels)Other sedating medications

Pregnancy & breastfeeding

🤰 Generally considered safe — discuss with your doctor

Always consult your doctor or obstetrician before taking any medication during pregnancy or while breastfeeding.

Frequently asked questions

What is loratadine (Claritin) used for?

Loratadine relieves allergy symptoms including runny nose, sneezing, itchy eyes, and hives. Known for being non-drowsy for daytime use.

Is loratadine non-drowsy?

Considered non-drowsy compared to older antihistamines. However a small percentage of people still experience some sedation.

What's the difference between loratadine and cetirizine?

Loratadine is less likely to cause drowsiness. Cetirizine works faster and may be slightly more effective, but causes drowsiness in more people.

Can I take loratadine every day?

Yes — safe for daily long-term use. Commonly used daily throughout allergy season or year-round for chronic allergies.

Can I give loratadine to my child?

Safe for children over 2. Use children's formulations (5mg) for ages 2–6. Children 6 and older can take the adult 10mg dose.

Related medications

💊CetirizineSecond-Generation Antihistamine 💊DiphenhydramineFirst-Generation Antihistamine / Sleep Aid 💊MontelukastLeukotriene Receptor Antagonist

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This is an information resource — not medical advice.

🚨 If you are experiencing a medical emergency or think you may have taken too much of a medication, call emergency services (911 in the US) or go to your nearest emergency room immediately.

Information on this page is sourced from general pharmaceutical references and is provided for educational purposes only. Drug information may change — always verify with your pharmacist or prescriber. PillCodex.com is not affiliated with any pharmaceutical company.