Kirkland Signature AllerClear-D 12HR is an extended-release allergy and nasal decongestant medication that provides 12-hour relief from allergy symptoms and sinus congestion. Each tablet contains two active ingredients: loratadine 5mg, a non-drowsy antihistamine that blocks histamine to relieve sneezing, runny nose, itchy eyes, nose and throat; and pseudoephedrine sulfate 120mg, a nasal decongestant that relieves sinus congestion and pressure by narrowing blood vessels in the nasal passages.

This medication is comparable to brand-name Claritin-D and is manufactured by Perrigo for Costco's Kirkland Signature line. It is formulated as a white to off-white, round, film-coated tablet imprinted with "7U0" and should be swallowed whole without dividing, crushing, chewing, or dissolving. The extended-release formula allows for convenient twice-daily dosing (one tablet every 12 hours, not to exceed 2 tablets in 24 hours) for adults and children 12 years and older.

The medication is classified as an over-the-counter drug under FDA ANDA076050 and is typically available behind the pharmacy counter at Costco locations. Each package contains 30 tablets in blister packaging. Active ingredients: loratadine 5mg, pseudoephedrine sulfate 120mg per tablet. Inactive ingredients include croscarmellose sodium, dibasic calcium phosphate anhydrous, hypromellose, lactose monohydrate, magnesium stearate, povidone, and titanium dioxide. Warnings: Do not use if you have ever had an allergic reaction to this product or any of its ingredients. Ask a doctor before use if you have heart disease, thyroid disease, high blood pressure, diabetes, trouble urinating due to enlarged prostate gland, liver or kidney disease, or if you are taking certain drugs for depression, psychiatric or emotional conditions, or Parkinson's disease. Stop use and ask a doctor if symptoms do not improve within 7 days, nervousness, dizziness or sleeplessness occurs. If pregnant or breastfeeding, ask a health professional before use.