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New Drug Update 2010-2011 Faculty Disclaimer - CME Conferences

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2 nd Annual Essentials in Primary Care<br />

Fall Conference<br />

Friday, November 11, <strong>2011</strong><br />

Acetaminophen <strong>Update</strong><br />

January 13, <strong>2011</strong> FDA <strong>Drug</strong> Safety Communication: Prescription<br />

Acetaminophen Products to be Limited to 325 mg Per Dosage<br />

Unit - The FDA is asking drug manufacturers to limit the strength<br />

of acetaminophen in prescription drug products, which are<br />

predominantly combinations of acetaminophen and opioids. This<br />

action will limit the amount of acetaminophen in these products<br />

to 325 mg per tablet, capsule, or other dosage unit, making<br />

these products safer for patients.<br />

• In addition, a Boxed Warning highlighting the potential for<br />

severe liver injury and a Warning highlighting the potential for<br />

allergic reactions (e.g., swelling of the face, mouth, and<br />

throat, difficulty breathing, itching, or rash) are being added<br />

to the label of all prescription drug products that contain<br />

acetaminophen.<br />

PPI’s and Low Serum Magnesium<br />

March 2, <strong>2011</strong> FDA Safety Communication: Proton Pump Inhibitor<br />

drugs (PPIs) - Low Magnesium Levels Can Be Associated With<br />

Long-Term Use<br />

• Prescription proton pump inhibitor (PPI) drugs may cause low<br />

serum magnesium levels (hypomagnesemia) if taken for<br />

prolonged periods of time (in most cases, longer than one<br />

year). Low serum magnesium levels can result in serious<br />

adverse events including muscle spasm (tetany), irregular<br />

heartbeat (arrhythmias), and convulsions (seizures); however,<br />

patients do not always have these symptoms. Treatment of<br />

hypomagnesemia generally requires magnesium supplements.<br />

In approximately one-quarter of the cases reviewed,<br />

magnesium supplementation alone did not improve low serum<br />

magnesium levels and the PPI had to be discontinued<br />

Wayne Weart<br />

<strong>New</strong> <strong>Drug</strong> <strong>Update</strong> Part I

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