What generic loratadine is
Generic loratadine is the same medicine as Claritin, sold without the brand name. The item we link to is Amazon Basic Care Allergy Relief, loratadine 10 mg tablets, 365 count. One tablet is one daily dose, so the bottle is a year's supply.
Loratadine is a second-generation antihistamine. It blocks histamine at H1 receptors, which calms sneezing, itching and a runny nose. It was designed to stay mostly out of the brain, so drowsiness is uncommon.
The label covers adults and children 6 and up: one 10 mg tablet once a day, and no more than one in 24 hours.
Is it really the same as Claritin?
For the part that treats your allergies, yes. To approve a generic, the FDA requires a study showing that it delivers the same drug exposure as the brand. The 90% confidence interval for the ratio of generic to brand exposure must fall within 80% to 125% PMID: 11515710. The active ingredient and strength must match too. A review of head-to-head trials in heart medicines found no evidence that brand-name versions worked better than generics PMID: 19050195.
What can differ is the inactive ingredients: fillers, binders, coatings and dyes. Most oral medicines contain some ingredients that can cause reactions in a small number of sensitive people PMID: 30867323. If you've reacted to a specific dye or filler before, check the label.
How well it works
Loratadine works better than a placebo. A 2026 network meta-analysis for the ARIA guideline panel found that the major second-generation antihistamines improve allergic rhinitis symptoms. It also found that most differences between them are small, and the certainty of those comparisons was often low PMID: 41707943.
When there is a difference, loratadine tends to be the milder option. In a head-to-head outdoor study during pollen season, cetirizine relieved symptoms faster and more completely than loratadine PMID: 8621847. A separate network meta-analysis of 18 randomized trials ranked loratadine 10 mg lowest of the antihistamines it compared, though every one of them beat placebo PMID: 37271114.
Expect relief within 1 to 3 hours. It works best taken every day through your allergy season.
What it treats well: mild sneezing, runny nose, and itchy nose and eyes.
What it doesn't treat well: a blocked, stuffy nose. Steroid nasal sprays such as Flonase relieve congestion better than antihistamine pills PMID: 9848901.
Drowsiness and other side effects
Loratadine is one of the least sedating antihistamines. In four prescription-monitoring studies covering more than 43,000 patients, sedation was reported about 3.5 times more often with cetirizine than with loratadine. Fexofenadine and loratadine did not differ significantly PMID: 10784544.
Practical tips:
- Don't take more than one tablet in 24 hours.
- Ask a clinician first if you have liver or kidney disease; you may need a different dose.
- Ask a clinician or pharmacist if you are pregnant or breastfeeding.
- See how it affects you before driving. Drowsiness is uncommon but possible.
Generic loratadine vs. Claritin
The drug and dose are the same. Our estimate for this bottle works out to about $2–4 a month. Brand Claritin runs about $15–20 a month, so a year of the generic costs about what one month of the brand does. The main reason to buy the brand is a known reaction to an inactive ingredient in a particular generic.
The one catch with a 365-count bottle is that you need to use it. If you only take loratadine for a few weeks each spring, check the expiration date and consider whether a smaller bottle makes more sense.
Who should buy it
Buy generic loratadine if you have mild seasonal or year-round symptoms, you're sensitive to drowsiness, and you want the lowest cost per day.
Choose generic cetirizine if loratadine hasn't been strong enough and drowsiness isn't a problem for you. Choose Allegra if you need stronger relief and must stay alert; it matched cetirizine's relief with less drowsiness in a head-to-head trial PMID: 14582814. Add Flonase or Nasacort if congestion is your main problem.
See how it compares with the other options in our Best Allergy Medicines roundup.