Claritin (loratadine): fast facts for allergy relief

Got itchy eyes, sneezing, or a runny nose? Claritin is a popular over-the-counter antihistamine many people use to quiet seasonal allergies without heavy drowsiness. It blocks histamine, the chemical that makes you sneeze and itch, and usually works within a few hours and lasts about 24 hours.

How to use Claritin safely

Adults and children 6 years and older: 10 mg once daily (one tablet). Children 2–5 years: usually a 5 mg syrup once daily — follow the package or ask your pediatrician for exact dosing. Take it at the same time each day for steady relief.

A few quick safety tips: don’t mix Claritin with other strong antihistamines or sedatives without checking with a doctor. Certain medicines that affect liver enzymes — like ketoconazole, erythromycin, or cimetidine — can raise loratadine levels and increase side effects. If you have severe liver or kidney problems, talk to your doctor about dose adjustments.

Common side effects are mild: headache, dry mouth, and rarely some drowsiness. If you notice a fast heartbeat, severe dizziness, or extreme drowsiness, stop the drug and seek medical help. If you're pregnant or breastfeeding, check with your healthcare provider before starting Claritin.

Alternatives, combos, and when to see a doctor

Claritin won’t clear nasal congestion well. If you need congestion relief, look for combination products labeled Claritin-D (contains pseudoephedrine) — but use those cautiously if you have high blood pressure or heart issues.

Other non-drowsy options include cetirizine (Zyrtec) and fexofenadine (Allegra). Cetirizine can cause a bit more sleepiness for some people, while fexofenadine tends to be non-drowsy like loratadine. For stronger short-term relief, first-generation antihistamines like diphenhydramine work but often make you very sleepy.

When to call a doctor? If allergy meds don’t help after a few weeks, your symptoms are severe, or you have hives with trouble breathing or swallowing — get urgent care. For persistent sinus pressure, recurring infections, or asthma symptoms with your allergies, your provider can suggest a tailored plan like nasal steroids, prescription meds, or allergy testing.

Buying Claritin: it’s available OTC at local pharmacies and many online stores. If you buy online, choose a reputable seller, check reviews, and ensure the product labeling is clear. Avoid suspiciously cheap supplies or sites that skip contact info. When in doubt, ask a pharmacist.

Quick takeaway: Claritin is a handy, usually non-drowsy choice for run-of-the-mill seasonal allergies. Know the right dose for your age, watch for interactions, and switch or see a doctor if your symptoms don’t improve.