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Drug Safety-related Labeling Changes (SrLC)

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TENORMIN (NDA-018240)

(ATENOLOL)

Safety-related Labeling Changes Approved by FDA Center for Drug Evaluation and Research (CDER)

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12/22/2023 (SUPPL-47)

Approved Drug Label (PDF)

5 Warnings and Precautions

Hypoglycemia

Newly added information:

Beta-blockers may prevent early warning signs of hypoglycemia, such as tachycardia, and increase the risk for severe or prolonged hypoglycemia at any time during treatment, especially in patients with diabetes mellitus or children and patients who are fasting (i.e., surgery, not eating regularly, or are vomiting). If severe hypoglycemia occurs, patients should be instructed to seek emergency treatment.

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

Information for Patients

Newly added information:

Inform patients or caregivers that there is a risk of hypoglycemia when TENORMIN is given to

patients who are fasting or who are vomiting. Monitor for symptoms of hypoglycemia.