Proton Pump Inhibitors: Risk for Myopathy?

Area of Science:

• Pharmacology
• Neurology
• Gastroenterology

Background:

• Proton pump inhibitors (PPIs) are widely used for acid suppression.
• Myopathy is a potential, though rare, adverse effect of medications.

Purpose of the Study:

• To investigate the association between PPI use and myopathy symptoms.
• To review existing case reports and adverse event data.

Main Methods:

• Conducted a literature search using PubMed, ToxNet, and EMBASE.
• Included 11 case reports and analyzed an adverse event database of 292 cases.
• Excluded studies with confounding factors like other myalgia-inducing drugs or diseases.

Main Results:

• The etiology of PPI-associated myopathy is unclear.
• Published data do not indicate a high risk of myopathy with PPI use.
• Myopathy symptoms should be considered in patients using PPIs.

Conclusions:

• A limited number of studies suggest PPIs are associated with rare myopathy-like symptoms.
• Symptoms typically resolve after discontinuing PPIs.
• Myopathy is a rare but serious side effect to consider during acid suppression therapy.