Walmart sells more than one product labeled “Equate Allergy Relief,” and only one of them matches Zyrtec. The version that contains 10 mg of cetirizine hydrochloride per tablet is the store-brand equivalent of Zyrtec. It uses the same active ingredient at the same dose and works the same way in your body. However, Walmart also sells an Equate Allergy Relief product that contains 25 mg of diphenhydramine, which is an entirely different drug (the same one in Benadryl). Checking the active ingredient on the box before you buy is essential.
Why the Label Matters
Walmart’s Equate line uses the name “Allergy Relief” across multiple products with different active ingredients. If the box lists cetirizine hydrochloride 10 mg, you’re getting the generic version of Zyrtec. If it lists diphenhydramine HCl 25 mg, you’re getting the generic version of Benadryl, which is a completely different medication with different effects, duration, and side effects. Diphenhydramine causes significant drowsiness and only lasts 4 to 6 hours, while cetirizine lasts a full 24 hours and is far less sedating.
The simplest way to confirm you’re picking up the right product: flip the box over and look at the “Drug Facts” panel. The active ingredient is always listed at the top.
How the Cetirizine Version Compares to Zyrtec
The cetirizine-based Equate Allergy Relief contains the identical active ingredient at the identical strength as brand-name Zyrtec: 10 mg of cetirizine hydrochloride per tablet. To earn FDA approval, a generic must demonstrate bioequivalence to the brand-name drug. For cetirizine, the FDA requires a single-dose crossover study in healthy adults, measuring cetirizine levels in the blood to confirm the generic is absorbed at the same rate and to the same extent as Zyrtec. The 90% confidence interval for key measurements must fall within an acceptable range. In practical terms, this means the generic delivers the same amount of medication to your bloodstream on the same timeline.
Both products treat the same symptoms: sneezing, runny nose, itchy or watery eyes, and itching of the nose or throat from hay fever and other upper respiratory allergies. Both also treat hives and itchy skin.
Onset, Duration, and Dosing
Whether you take brand-name Zyrtec or the Equate cetirizine version, the medication starts working within 20 to 60 minutes. It reaches its peak concentration in your blood after about one hour and remains effective for at least 24 hours, which is why both are taken once daily. You can take it with or without food.
The standard adult dose is 10 mg once a day. Some people with milder symptoms or those sensitive to medication start at 5 mg. Children’s dosing varies by age, so pediatric versions are sold separately in liquid form.
Differences in Inactive Ingredients
The one real difference between Equate’s cetirizine tablets and Zyrtec is the inactive ingredients: the fillers, coatings, and dyes that hold the tablet together and give it its appearance. The Equate version contains corn starch, lactose monohydrate, magnesium stearate, titanium dioxide, and FD&C blue no. 1 aluminum lake, among others. Zyrtec’s formulation uses a slightly different combination.
For the vast majority of people, these differences have zero effect. But if you have a known sensitivity or allergy to a specific dye, filler, or lactose, it’s worth comparing the inactive ingredient lists on both products. The inactive ingredients are listed on the Drug Facts panel of every OTC medication.
Price Difference
The cost gap is the main reason people search for this comparison. Brand-name Zyrtec runs roughly $0.74 per tablet for a 30-count box at typical retail pricing. Equate’s cetirizine version costs substantially less, often around $0.10 to $0.20 per tablet depending on the package size. Over a year of daily use, that difference adds up to well over $150 in savings for a medication that meets the same FDA bioequivalence standards.
Which One to Buy
If you pick up the Equate Allergy Relief box that says “cetirizine hydrochloride 10 mg” on the Drug Facts panel, you are getting a therapeutically equivalent product to Zyrtec for a fraction of the price. The active ingredient, the dose, and the way your body absorbs it are the same. Just make sure you’re not accidentally grabbing the diphenhydramine version, which is a shorter-acting, more sedating antihistamine designed for a different purpose.