Attorney at Graves McLain Injury Lawyers
Practice Areas: Car Accidents, Medical Malpractice, Vaccine Injuries
When you take medication for a serious condition like high blood pressure or heart failure, you expect it to be safe and effective. Unfortunately, several batches of Losartan—a commonly prescribed blood pressure drug—were recalled after they were found to contain a potentially harmful contaminant. This issue raised concerns among patients and healthcare providers across the country, including many in Oklahoma.
The U.S. Food and Drug Administration (FDA) confirmed that lots of Losartan contained NMBA, a substance classified as a probable human carcinogen. Although no injuries were reported at the time of the recall, the long-term risks of exposure have led many patients to seek medical guidance and, in some cases, legal help. If you or someone you know has taken Losartan recently, it’s essential to understand what this recall means and what steps you can take next.
Losartan is a prescription medication used to treat high blood pressure and congestive heart failure. It’s part of a group of drugs known as angiotensin II receptor blockers, or ARBs.
In 2019, Camber Pharmaceuticals recalled several batches of Losartan after testing revealed contamination with NMBA, short for N-Nitroso-N-Methyl-4-aminobutyric acid.
Camber Pharmaceuticals recalled approximately 56,000 bottles of Losartan after discovering NMBA contamination in certain lots of the drug.
The U.S. Food and Drug Administration (FDA) classified NMBA as a probable human carcinogen. While no illnesses were reported at the time, the discovery raised concerns about long-term exposure and potential cancer risks.
NMBA is a nitrosamine, a type of chemical impurity that may increase cancer risk if consumed in high amounts over time. Nitrosamines are not supposed to be present in medications.
According to the FDA, NMBA is classified as a probable human carcinogen. Long-term exposure to this chemical may increase cancer risk in humans.
The contamination in Losartan wasn’t due to misuse or improper storage—it happened during the manufacturing process. That’s why the FDA and drug makers issued recalls.
If you’ve taken Losartan from a recalled batch, it does not mean you are automatically in danger, but it’s essential to stay informed and monitor your health with the help of a doctor.
The recall included tablets in 25 mg, 50 mg, and 100 mg strengths. These products were sold under several National Drug Code (NDC) numbers. You can check your medication label to see if your prescription is affected.
NDC Number | Dosage Strength | Form | Manufacturer |
| 31722-700-90 | 100 mg | Tablet | Camber Pharmaceuticals |
| 31722-700-05 | 100 mg | Tablet | Camber Pharmaceuticals |
| 31722-701-30 | 50 mg | Tablet | Camber Pharmaceuticals |
| 31722-701-90 | 50 mg | Tablet | Camber Pharmaceuticals |
| 31722-702-30 | 25 mg | Tablet | Camber Pharmaceuticals |
If your medication matches any of these codes, speak with your pharmacist or doctor. Do not stop taking the medication without medical advice, as sudden withdrawal can cause serious health problems.
Losartan isn’t the only ARB drug affected by contamination. Similar recalls were issued for Valsartan and Irbesartan; both used to manage blood pressure.
The U.S. Department of Health and Human Services notes that NDMA and similar contaminants can impair liver, kidney, and lung function when consumed in elevated amounts.
These recalls involved major drug manufacturers, including:
The impurities discovered—NDMA and NDEA—are also classified as probable carcinogens. Side effects tied to exposure can include:
Even if no immediate symptoms appear, these contaminants may cause harm over time, especially in people with preexisting health conditions.
If you’ve been taking Losartan and believe your prescription may be from a recalled batch, do not panic. The most critical first step is to talk to your doctor. They can help you switch medications safely or monitor your health for any unusual symptoms.
You can also call Camber Pharmaceuticals at 866-495-1995 for information about the recall and to find out whether your lot number is affected.
Oklahoma law allows injured patients to file product liability claims within two years of discovering harm, but early legal action is critical for preserving evidence and protecting rights.
It’s also a good idea to keep any medication bottles, receipts, or medical records related to your prescription. These documents can be helpful if you later pursue a legal claim.
Drug makers are responsible for ensuring the safety of their products. When that responsibility is neglected, and harmful contaminants reach patients, injured consumers may have the right to file a product liability claim.
In Oklahoma, patients harmed by contaminated medications can seek restitution for hardship, medical expenses, and other losses. However, not everyone is eligible to file a claim, and each case must be reviewed based on its specific facts.
Graves McLain Injury Lawyers can help you understand your rights and determine whether you may have a case.
Losartan was recalled due to contamination with NMBA, a probable carcinogen. The manufacturer discovered the impurity during testing, leading to a nationwide recall.
Do not stop taking the drug suddenly. Contact your doctor to discuss safe alternatives and next steps. Your pharmacist can help confirm if your medication is affected.
Yes, only specific lots were impacted by the recall. Batches not listed are considered safe. Always consult your pharmacist or physician if you’re unsure.
You may have legal options if you experience harm. Each situation is different, and a product liability attorney can evaluate whether you may have a valid claim.
Oklahoma law generally allows two years from the date you became aware of the harm to file a claim. Acting sooner can help preserve crucial evidence.
No injuries were reported at the time of the recall, but the presence of a carcinogen in medication raises serious safety concerns. Ongoing studies continue to monitor potential long-term effects.
The recall of Losartan reminds us that even trusted medications can pose unexpected risks. While the FDA and drug makers have taken action to remove contaminated products, patients still deserve answers and legal options if they’ve been harmed.
If you live in Oklahoma and believe you were affected by the Losartan recall, Graves McLain Injury Lawyers can help you review your situation. Our legal team handles pharmaceutical injury claims and will explain your options clearly without pressure or upfront fees.
When injury victims need a law firm with a reputation for excellence, turn to Graves McLain Injury Lawyers. We are a top-rated personal injury firm determined to be the best. With decades of award-winning representation, our clients recover the compensation they need to put their lives back together.
