PTCB Certified Pharmacy Technician (PTCE)MedicationsMedium
A patient calls the pharmacy reporting they have been experiencing severe muscle pain and dark urine since starting a new cholesterol medication. Which of the following medication classes is most likely responsible for these symptoms?
- AStatins (HMG-CoA Reductase Inhibitors)
- BThiazide Diuretics
- CBeta-Blockers
- DAngiotensin-Converting Enzyme (ACE) Inhibitors
Show answer & explanationAnswer & explanation
Correct answer: A. Statins (HMG-CoA Reductase Inhibitors)
Severe muscle pain and dark urine are classic symptoms of rhabdomyolysis, a rare but serious side effect associated with statin medications. Rhabdomyolysis involves the breakdown of muscle tissue, releasing proteins into the bloodstream that can damage the kidneys, leading to dark urine.
Why the other options are wrong
- B. Thiazide diuretics are associated with electrolyte imbalances and increased urination, not muscle pain or dark urine.
- C. Beta-blockers can cause fatigue, dizziness, and bradycardia, but not typically severe muscle pain or dark urine.
- D. ACE inhibitors are known for causing a persistent dry cough, not severe muscle pain or dark urine.
Statin-Induced Rhabdomyolysis
A rare but severe adverse effect of statin medications characterized by rapid muscle breakdown, leading to muscle pain, weakness, and dark urine due to myoglobin release, which can cause kidney damage.
- Symptoms include severe muscle pain, weakness, and dark, tea-colored urine.
- Requires immediate medical attention.
- Often associated with high doses, drug interactions, or pre-existing conditions.
Memory trick: ADRs are reactions, sometimes dangerous, always note them.