The September 3 recall involves more than 13,000 bottles of chlorthalidone tablets.
The U.S. Food and Drug Administration (FDA) has classified a new recall involving chlorthalidone tablets as Class II. The medication is commonly prescribed to help lower high blood pressure and reduce excess fluid in the body.
Inventia Healthcare announced the recall on September 3. It follows an earlier recall involving certain chlorthalidone tablets in June. The FDA classified both recalls as Class II.
What Is Chlorthalidone?
Chlorthalidone is a diuretic, often called a “water pill.” It works by helping the kidneys remove extra salt and water from the body.
The medication is used to treat high blood pressure and fluid retention. Keeping blood pressure under control can help reduce the risk of complications such as heart disease, heart failure, stroke and kidney problems.
Why Was the Medication Recalled?
The reason given for the September recall is “failed dissolution specifications.”
Dissolution refers to the process through which the active ingredient in a tablet dissolves so it can be absorbed by the body.
If a tablet does not dissolve properly, the body may not receive the expected amount of the active ingredient. As a result, the medicine may not work as effectively as intended.
Neither Inventia Healthcare nor the FDA has provided additional details about why the affected tablets failed to meet the required dissolution specifications.
What Does a Class II Recall Mean?
The FDA uses recall classifications to describe the potential health risks associated with a product.
A Class II recall means using or being exposed to the affected product could cause temporary health problems or medically reversible effects. According to the FDA, the likelihood of serious health consequences is considered remote.
A Class II classification does not mean that everyone who uses the affected product will experience a health problem. It describes the potential risk associated with the recalled product.
Could the Problem Affect How Chlorthalidone Works?
For chlorthalidone to work properly, its active ingredient needs to be released from the tablet and absorbed by the body.
If a tablet does not dissolve as expected, less of the active ingredient may become available for absorption. This could reduce the medicine’s effectiveness in managing blood pressure or fluid retention.
The available information does not indicate that every tablet from an affected lot will necessarily cause a problem.
What Is Known About the September Recall?
Inventia Healthcare initiated the new recall on September 3, involving more than 13,000 bottles of chlorthalidone tablets.
The FDA classified it as Class II on September 17. The company had previously recalled certain lots of the medication in June, and that recall also received a Class II classification.
The stated reason for the September recall remains the failure to meet dissolution specifications. No additional explanation has been provided by Inventia Healthcare or the FDA.
What Should Patients Do?
Anyone taking chlorthalidone can check their medication packaging to determine whether it belongs to an affected lot.
Patients should not stop taking a blood pressure medication on their own because of a recall notice. If they believe they have a recalled product, they can contact their pharmacist or healthcare provider to determine what steps to take.
What to Know About the Recall
The September 3 chlorthalidone recall affects more than 13,000 bottles and was classified as Class II by the FDA on September 17.
The issue involves tablets that did not meet dissolution requirements, which could affect how the active ingredient is absorbed. The FDA considers the likelihood of serious harm to be remote, but people who have an affected product should speak with a pharmacist or healthcare provider about what to do next.

