Can I take these for catarrh from a cold?

They help allergy-driven catarrh — clear, itchy, sneezy — far more than the common cold, where evidence for newer antihistamines is weak. A cold clears itself in about a week; fever or coloured discharge that worsens deserves a clinic visit rather than stronger allergy tablets.

Is it safe to take one every day long-term?

Both are considered safe for extended daily use in allergy sufferers and don't lose effect the way decongestant sprays do. If you find yourself needing one every single day year-round, though, it's worth identifying and reducing the trigger — dust, mould, a pet — rather than medicating indefinitely.

Loratadine vs Cetirizine: which allergy tablet won't slow you down?

The short answer

Both are once-daily, non-sedating antihistamines that handle sneezing, itching, and catarrh from allergies. Cetirizine acts a little faster and hits a little harder — but makes roughly one person in ten drowsy. Loratadine is the safest bet when you must stay sharp: driving, operating machinery, writing exams.

The old allergy tablets Nigerians grew up with — chlorpheniramine (Piriton) — work, but they sedate heavily. These two belong to the newer generation designed to stay out of the brain. Between them the trade-off is simple: cetirizine tends to relieve symptoms slightly faster and more strongly, especially skin itching and hives, at the cost of noticeable drowsiness in a minority of users. Loratadine is the least sedating common option, and the difference in strength is modest for most people.

For harmattan-season catarrh, dust allergies, or reactions to creams and foods, either taken once daily is reasonable. If one seems weak for you, trying the other is legitimate — people genuinely respond differently. What neither will fix is a true infection: yellow-green catarrh with fever needs a different conversation.

Side by side

	Loratadine	Cetirizine
Drowsiness	Rare — the least sedating option	Affects roughly 1 in 10 people
Speed and strength	Slightly gentler, slower onset	Slightly faster and stronger, notably for itching/hives
Dosing	Once daily	Once daily
Good for	Daytime use, drivers, students in exams	Skin reactions, hives, when maximum effect matters
Drug class	Second-generation antihistamine	Second-generation antihistamine
Typical price	₦200–₦350 online (median ₦275, July 2026)	₦3,350–₦9,000 online (median ₦8,700, July 2026)
NAFDAC registrations	24 active Greenbook listings	3 active Greenbook listings
Common brands	Claritin, Lorfast	Zyrtec, Allercet

Prices are sampled from licensed Nigerian online pharmacies and span brands and pack sizes — indicative only. Registration counts are from our copy of the NAFDAC Greenbook (July 2026); listings can lag renewals.

Reach for Loratadine when…

•You drive, operate machines, or need full concentration
•Antihistamines have made you groggy before
•Mild-to-moderate seasonal or dust allergy

Reach for Cetirizine when…

•Itching or hives are the main complaint
•You want the faster, stronger option and can tolerate possible drowsiness
•Evening dosing suits you (any drowsiness works in your favour)

Frequently asked questions

Educational comparison, not a prescription. Both medicines have full guides covering dosage, side effects, and warnings — talk to a pharmacist or doctor before switching. Updated July 2026.