Who Makes Claritin?
Claritin is made by Bayer Consumer Health, the consumer arm of the German pharmaceutical company Bayer AG. The brand was acquired from Merck in 2014.
Quick Answer
Claritin is made by Bayer Consumer Health, the consumer division of the German pharmaceutical giant Bayer AG. Bayer bought the Claritin brand (along with Coppertone, Miralax and Dr. Scholl's) from Merck & Co. in October 2014 in a $14.2 billion consumer health deal.
Claritin's active ingredient loratadine was originally discovered by Schering-Plough in the 1980s. Manufacturing happens at Bayer sites in Myerstown, Pennsylvania and Argentina, with API sourced from multiple suppliers in India and Europe.
The Parent Company
Bayer AG is a 160 year old German life sciences company headquartered in Leverkusen. It operates in three divisions: Pharmaceuticals, Consumer Health and Crop Science.
The Consumer Health division owns Aspirin, Aleve, Claritin, One A Day, Alka-Seltzer, Berocca, Bepanthen, Coppertone, Dr. Scholl's and Midol, among other brands. It generates roughly 6 billion euros in annual revenue.
How Claritin Started
Loratadine was discovered by Schering-Plough Corporation researchers in the early 1980s as a second generation non-sedating antihistamine. It was approved by the FDA as a prescription drug in 1993 and became one of the best selling prescription medicines in the world by the late 1990s.
Claritin moved to over the counter status in the United States in December 2002 after its Schering-Plough patent expired. That switch was one of the largest Rx to OTC transitions in FDA history.
Schering-Plough was acquired by Merck & Co. in 2009. Merck sold its OTC business, including Claritin, to Bayer in 2014.
Where Claritin Is Made
Claritin for the US market is manufactured at Bayer's Myerstown, Pennsylvania consumer health plant, one of Bayer's largest global OTC sites. The facility runs solid dose tablet presses, coating equipment and blister packaging for Aleve, Alka-Seltzer Plus and Claritin.
Claritin for Latin America is manufactured at Bayer's plant in Buenos Aires, Argentina. European Claritin (sold as Clarityn in the UK) comes from Bayer sites in Germany and Spain.
Loratadine API is sourced from multiple qualified suppliers, including Dr. Reddy's, Cipla, Morepen Laboratories and Uquifa in Europe.
The Claritin Family Of Products
The core Claritin product is 10 milligram loratadine tablets. Bayer has extended the brand with Claritin-D (loratadine plus pseudoephedrine), Claritin RediTabs (orally disintegrating tablets), Claritin Liqui-Gels, Children's Claritin (chewables and syrup) and Claritin Cool Mint Chewables.
Every Claritin product uses loratadine as the active ingredient except Claritin Eye, which uses ketotifen and is a separate class of drug.
How Claritin Compares To Rivals
Claritin (loratadine) competes with Zyrtec (cetirizine, Kenvue) and Allegra (fexofenadine, Sanofi). Loratadine is the least sedating of the three, cetirizine is the strongest but most sedating, and fexofenadine sits in the middle.
Store brand loratadine (Equate, Up & Up, Amazon Basic Care, Kirkland Signature) is chemically identical to Claritin. A 90 count box of generic 10 milligram loratadine typically costs 5 to 10 dollars, versus 20 to 30 dollars for the same count of branded Claritin.
How To Trace Any Product Back To Its Manufacturer
- Read the fine print on the label. US and EU packaging law requires either the manufacturer name or a "distributed by" address. That is your starting point.
- Search the company's SEC filings. Public parent companies list subsidiaries and manufacturing sites in their 10-K annual reports.
- Check the FDA or USDA establishment number. For food, drugs and cosmetics, the plant of origin can often be looked up in public regulatory databases.
- Follow the money. Press releases about acquisitions and joint ventures are the fastest way to spot who really controls a brand today.
Frequently Asked Questions
Is Claritin the same as loratadine? Yes. Claritin is the brand name for 10 milligram loratadine.
Who used to own Claritin? Schering-Plough (until 2009), then Merck & Co. (2009 to 2014), and now Bayer.
Is Claritin made in the USA? US market Claritin is manufactured at Bayer's Myerstown, Pennsylvania plant.
Is generic loratadine as good as Claritin? Yes. The FDA requires generic drugs to demonstrate the same bioavailability as the branded version. Any 10 milligram loratadine is the same medicine.
What This Means For The Shopper
When you understand who actually makes Claritin, a few practical shopping habits fall into place. First, corporate ownership tells you where product safety recalls and reformulations come from. Second, it tells you which store brand alternatives are chemically or functionally equivalent, because generic makers usually target the same reference product. Third, it explains pricing behavior: brands owned by big consumer conglomerates rarely drop below a floor price for long, because that floor protects a very large marketing and distribution investment.
Corporate ownership also shifts over time. The same brand you grew up with may be on its third or fourth parent company. That is why any answer to "who makes Claritin" should be dated. The current parent listed on the label today is the one legally responsible for the product, regardless of the packaging design or advertising campaign you remember from years ago.
If you want to double check, the fastest confirmation is the label itself. Look for the "Distributed by" or "Manufactured by" line in the fine print. The company name and city on that line is the current legal manufacturer or distributor of Claritin for your market, and that is the entity you would contact for a product complaint, safety concern or ingredient question.
What To Watch Going Forward
Consumer packaged goods ownership keeps consolidating. In the last five years alone, several major consumer health and beverage brands have moved between parent companies through spin-offs, sales and joint ventures. Expect more of the same over the next five years, especially as private equity and family holding companies continue to reshape mid-cap consumer brands.
If you buy Claritin regularly and care about who profits from your purchase, it is worth checking the label every year or two. Ownership changes are usually announced in trade press but rarely make consumer headlines, so most shoppers miss them until the packaging gets a subtle redesign to reflect the new parent company.
Bottom Line
Claritin is a Bayer brand today, was a Merck brand before 2014 and a Schering-Plough brand before that. The active ingredient loratadine is available as a cheap generic and is the same medicine as branded Claritin.