The U.S. Food and Drug Administration has announced a voluntary recall of Chantix (varenicline), a medication widely used to help people quit smoking. The action follows routine testing that found elevated levels of nitrosamines in certain batches.

Nitrosamines are chemicals that can form in food and water but may be harmful in higher amounts. Long-term exposure to increased levels has been linked to a greater cancer risk. In this case, the detected amounts were above the FDA’s recommended safety limit. Although the exact risk to patients is still under review, officials said precautionary steps are needed to protect public health.

The agency explained that the recall is “voluntary,” meaning it was carried out in cooperation with the manufacturer. By removing the affected lots, regulators aim to maintain safety and preserve trust in the medication supply.

Chantix has been considered one of the most effective treatments for smoking cessation. Its temporary shortage may create difficulties for patients depending on it to quit. However, health authorities stress there is no need to panic.

Doctors and pharmacists are advised to contact patients who may have received the recalled batches. Patients currently taking the medication should consult their healthcare providers to discuss possible alternatives rather than stopping abruptly.

The FDA also urged drug manufacturers to strengthen nitrosamine testing standards. Similar recalls in recent years have highlighted the need for strict quality control. Officials emphasized that, even when risks appear uncertain or minimal, protecting patients remains the highest priority.