Dozens of prescription medications, recreational substances, and even some over-the-counter supplements can trigger rhabdomyolysis, a condition in which damaged skeletal muscle breaks down and releases its contents into the bloodstream. The drug classes most frequently implicated include cholesterol-lowering statins, antipsychotics, certain anesthetics, antibiotics, immune checkpoint inhibitors, antiretrovirals, and stimulant drugs like cocaine. Because the list is long and the mechanisms differ from one drug class to the next, understanding which medications carry the risk and why they do helps you recognize early warning signs and have informed conversations with your doctor.
Statins
Statins are probably the drug class most publicly associated with rhabdomyolysis. Muscle symptoms of some kind, ranging from mild soreness and weakness to life-threatening muscle breakdown, are reported by roughly one in ten to one in four people on statin therapy.1PubMed Central. Statin-Associated Myopathy: Emphasis on Mechanisms and Targeted Therapy Actual rhabdomyolysis, though, is rare. A review pooling data from over a million patients found that about 0.009% developed statin-induced rhabdomyolysis, with simvastatin carrying a higher rate than other statins.2PubMed Central. A Narrative Review of Statin-Induced Rhabdomyolysis: Molecular Mechanism, Risk Factors, and Management So while the risk per patient is genuinely small, the sheer number of people taking statins worldwide means clinicians see these cases regularly.
The mechanism has to do with how statins lower cholesterol. By blocking a key enzyme in cholesterol production, statins also reduce the body’s output of coenzyme Q10, a molecule that muscle cells need for energy production. When energy supply to the muscle falters, calcium floods the cell, activating enzymes that digest the cell from the inside. Lipophilic statins like simvastatin, atorvastatin, and fluvastatin pass through cell membranes more easily than their water-soluble counterparts, which is thought to explain why they tend to carry somewhat higher muscle toxicity.2PubMed Central. A Narrative Review of Statin-Induced Rhabdomyolysis: Molecular Mechanism, Risk Factors, and Management
A crucial detail that often gets overlooked is the role of drug interactions. Statins metabolized by a liver enzyme called CYP3A4 become far more dangerous when taken alongside drugs that block that enzyme. Common CYP3A4 inhibitors include certain antifungals, macrolide antibiotics like erythromycin and clarithromycin, HIV protease inhibitors, and even grapefruit juice in large quantities. These agents slow the breakdown of the statin, allowing blood levels to climb high enough to damage muscle.3PubMed Central. Statin-induced rhabdomyolysis: a complication of a commonly overlooked drug interaction If you are on a statin and get prescribed a new medication, it is worth asking the prescriber or pharmacist whether the two drugs interact through CYP3A4.
Antipsychotics and Serotonergic Drugs
Antipsychotic medications, both older “typical” agents like haloperidol and newer “atypical” ones like risperidone and clozapine, can cause rhabdomyolysis through a dangerous reaction called neuroleptic malignant syndrome (NMS). NMS involves high fever, severe muscle rigidity, altered consciousness, and a sharp spike in muscle enzyme levels. The rigid, sustained contraction of muscles effectively crushes the cells, releasing their contents into the blood. Case reports document NMS-associated rhabdomyolysis even at low antipsychotic doses, including in children and adolescents.4PubMed Central. Rhabdomyolysis and Neuroleptic Malignant Syndrome Associated with Very Low-dose Antipsychotics in Children and Adolescent One case involved a patient on amisulpride, trifluoperazine, clozapine, and amitriptyline who developed full-blown NMS with rhabdomyolysis, elevated kidney markers, and fever.5European Journal of Clinical Medicine. Neuroleptic Malignant Syndrome Associated with Rhabdomyolysis Induced by Antipsychotic Agents: A Rare Occurrence
A related but distinct syndrome occurs with serotonin-boosting drugs. Serotonin syndrome happens when too much serotonergic activity accumulates, often because two or more serotonin-active drugs are combined. In severe cases it produces the same kind of extreme muscle rigidity that leads to muscle breakdown. Several SSRIs, including sertraline and escitalopram, have been tied to rhabdomyolysis through this pathway.6PubMed Central. Antidepressant and antiobesity drug-induced serotonin syndrome complicated by multiple organ injury: A case report A literature review found that some patients with either neuroleptic malignant syndrome or serotonin syndrome go on to have recurrent episodes of rhabdomyolysis, suggesting an underlying vulnerability in certain individuals.7PubMed. HyperCKemia and rhabdomyolysis in the neuroleptic malignant and serotonin syndromes: A literature review
The practical takeaway is that any unexplained muscle pain, stiffness, or dark-colored urine in someone taking an antipsychotic or a combination of serotonergic medications warrants urgent medical attention. These syndromes can escalate quickly, and early recognition is the most important factor in preventing kidney failure and death.
Anesthetics
Three distinct anesthesia-related scenarios can lead to rhabdomyolysis. The first and most dramatic is malignant hyperthermia, a genetic condition in which exposure to volatile anesthetics like halothane, sevoflurane, desflurane, or isoflurane, or to the muscle relaxant succinylcholine, triggers an uncontrolled hypermetabolic storm in skeletal muscle. The classic presentation includes a rapid spike in body temperature, fast heart rate, massive carbon dioxide production, severe acidosis, and rhabdomyolysis.8PubMed Central. Malignant hyperthermia: a review Malignant hyperthermia is inherited in a dominant pattern, meaning only one copy of the responsible gene variant is needed to be at risk.9QJM: An International Journal of Medicine. Malignant hyperthermia susceptibility: anaesthetic implications and risk stratification If anyone in your family has had a bad reaction to general anesthesia, that history should be shared with every anesthesiologist you encounter.
The second scenario is propofol infusion syndrome (PRIS), a rare but often fatal complication of prolonged propofol administration, usually in intensive care patients who are sedated and on mechanical ventilation. PRIS disrupts critical cellular energy processes and presents as a cascade of organ failures: heart dysfunction, metabolic acidosis, rhabdomyolysis, high potassium levels, and kidney failure.10PubMed Central. Propofol-Related Infusion Syndrome: A Clinical Review In one documented case, a patient’s muscle enzyme levels climbed dramatically during a prolonged propofol infusion and normalized only after the drug was stopped.11PubMed Central. Propofol Infusion Syndrome: A Rare Complication From a Common Medication PRIS is a concern for ICU teams rather than for patients undergoing routine short procedures, since the syndrome develops with extended, high-dose infusions.
Cocaine and Other Stimulants
Cocaine is one of the more common causes of rhabdomyolysis seen in emergency departments, and it damages muscle through several overlapping pathways. Cocaine constricts blood vessels, which can starve muscles of oxygen. It also raises body temperature, causes extreme agitation and prolonged involuntary muscle activity, and appears to exert a direct toxic effect on muscle cells.12PubMed. Rhabdomyolysis and hyperthermia after cocaine abuse: a variant of the neuroleptic malignant syndrome? Chronic cocaine use may also alter dopamine signaling in ways that make the muscle damage resemble neuroleptic malignant syndrome, blurring the line between drug-induced and neurological causes of rhabdomyolysis.13Human Pathology. Rhabdomyolysis associated with cocaine abuse
Amphetamines, MDMA, and synthetic cathinones (bath salts) cause rhabdomyolysis through similar mechanisms: hyperthermia, prolonged exertion, vasoconstriction, and seizures. The risk is amplified in hot environments, during prolonged physical activity, or when multiple substances are used together. Any stimulant drug that raises body temperature and keeps muscles contracting can, in theory, cause muscle breakdown.
Antibiotics
Antibiotics are not the first drug class most people think of when it comes to rhabdomyolysis, but a large pharmacovigilance analysis of FDA adverse-event reports found statistically significant associations with more than a dozen antibiotics. Daptomycin stood out with by far the highest reporting odds ratio, followed by several cephalosporins, erythromycin, fluoroquinolones like norfloxacin and ciprofloxacin, clarithromycin, and trimethoprim-sulfamethoxazole, among others.14PubMed Central. Rhabdomyolysis Associations with Antibiotics: A Pharmacovigilance Study of the FDA Adverse Event Reporting System (FAERS)
Daptomycin’s strong signal makes clinical sense: the drug works by disrupting bacterial cell membranes, and at higher doses it appears to do something similar to human muscle cells. Monitoring creatine kinase levels during daptomycin therapy is already standard practice in many hospitals. The macrolide antibiotics (erythromycin, clarithromycin, azithromycin) introduce a second risk because they are potent CYP3A4 inhibitors. As described earlier, when patients happen to be on a statin at the same time, these antibiotics can raise statin blood levels enough to precipitate rhabdomyolysis.3PubMed Central. Statin-induced rhabdomyolysis: a complication of a commonly overlooked drug interaction So with macrolides, there is both a direct muscle-damaging potential and an indirect risk through drug interactions.
Immune Checkpoint Inhibitors
Cancer immunotherapy drugs like pembrolizumab, nivolumab, and ipilimumab work by releasing the brakes on the immune system so it can attack tumors. Unfortunately, that unleashed immune response sometimes targets the patient’s own muscle tissue, causing autoimmune myositis that can progress to rhabdomyolysis. Reports include cases where pembrolizumab caused rhabdomyolysis after just a single dose.15PubMed Central. Rhabdomyolysis following single administration of pembrolizumab: Is severe immune-reaction a marker for durable treatment response? In a series of patients who developed immune-related myositis on checkpoint inhibitors, creatine kinase levels ranged from about 1,000 to over 16,000 U/L.16PubMed. Immune checkpoint inhibitor-related myositis and myocarditis in patients with cancer
What makes checkpoint inhibitor myositis especially concerning is that it often occurs alongside myocarditis, meaning the same immune attack hitting skeletal muscle can also hit heart muscle. One patient on combined ipilimumab-nivolumab developed acute rhabdomyolysis with severe polymyositis requiring intensive care.17Journal for ImmunoTherapy of Cancer. Acute rhabdomyolysis with severe polymyositis following ipilimumab-nivolumab treatment in a cancer patient with elevated anti-striated muscle antibody These events remain rare overall, but the rising use of checkpoint inhibitors in oncology means clinicians and patients should be alert to new muscle weakness or pain during treatment.
Antiretroviral Drugs
Several classes of HIV medications have been tied to muscle toxicity, with the oldest and best-documented link involving zidovudine and other nucleoside reverse transcriptase inhibitors (NRTIs). These drugs can damage mitochondria in muscle cells, the same organelles responsible for producing energy, leading to a toxic myopathy that can escalate to rhabdomyolysis.18PubMed. Skeletal muscle involvement in human immunodeficiency virus (HIV)-infected patients in the era of highly active antiretroviral therapy (HAART) Even newer combination pills are not entirely free of this risk. A case report documented rhabdomyolysis in a patient taking Triumeq, a combination of abacavir, dolutegravir, and lamivudine, with lamivudine identified as the suspected cause due to its known potential for mitochondrial toxicity.19PubMed Central. Case report of Triumeq (abacavir/dolutegravir/lamivudine) associated rhabdomyolysis in a human immunodeficiency virus (HIV) infected patient
HIV-positive patients face a layered risk because they may also be on other myotoxic drugs, their immune status can fluctuate, and the virus itself can affect muscle. Monitoring muscle symptoms carefully during antiretroviral therapy matters, especially when new drugs are added to an existing regimen.
Supplements and Over-the-Counter Products
Red yeast rice, widely marketed as a “natural” cholesterol-lowering supplement, contains monacolin K, which is chemically identical to the prescription statin lovastatin. That means red yeast rice carries the same muscle risks as a statin, including rhabdomyolysis. Because supplements are not regulated the same way as prescription drugs, the amount of monacolin K can vary wildly between brands and even between batches from the same manufacturer.20PubMed Central. Rhabdomyolysis Related to Red Yeast Rice Ingestion People who take red yeast rice to avoid the “side effects of statins” are sometimes unknowingly taking a statin in unregulated form.
Colchicine, used for gout and increasingly prescribed for pericarditis, is another drug with documented rhabdomyolysis cases. One patient developed elevated muscle enzymes at five times the normal level along with electrophysiological signs of myopathy during colchicine treatment.21PubMed Central. Colchicine-Induced Rhabdomyolysis: Clinical, Biochemical, and Neurophysiological Features and Review of the Literature Colchicine has a narrow margin between a therapeutic dose and a toxic one, and this margin shrinks further in patients with kidney impairment or those taking CYP3A4 inhibitors.
Even common drugs can contribute. Diuretics, widely used for blood pressure and fluid retention, can cause severe potassium loss, and that low potassium itself can trigger rhabdomyolysis. A case report documented a 74-year-old man hospitalized with acute rhabdomyolysis and dark urine directly attributable to diuretic-induced low potassium.22PubMed. Marked hypokalemic rhabdomyolysis with myoglobinuria due to diuretic treatment The drug does not damage muscle directly; instead, it creates an electrolyte environment in which muscle cells cannot function and begin to die. NSAIDs like ibuprofen pose a different threat: while they are not a primary cause of rhabdomyolysis, animal research found that ibuprofen dramatically worsened kidney injury once rhabdomyolysis was already underway, dropping kidney filtration rates to a fraction of normal.23PubMed Central. Legal Performance-enhancing Drugs Alter Course and Treatment of Rhabdomyolysis-induced Acute Kidney Injury Reaching for ibuprofen to treat the muscle pain of early rhabdomyolysis could make the kidney consequences significantly worse.
Genetic Vulnerability and Why Some People Are Hit Harder
Not everyone on a given drug faces the same rhabdomyolysis risk, and genetics go a long way toward explaining the difference. The best-studied example involves a gene called SLCO1B1, which encodes a transporter protein responsible for moving statins from the bloodstream into the liver where they are supposed to work. A landmark genome-wide study found that a common variant in this gene (carried by about 15% of the population) increased the odds of statin-induced muscle damage roughly four and a half times per copy. People carrying two copies of the variant faced about a 17-fold higher risk compared to those without it, and more than 60% of the myopathy cases in the study could be traced back to this single genetic variant.24PubMed. SLCO1B1 variants and statin-induced myopathy–a genomewide study
The same transporter gene turned out to be the only one with a significant genome-wide signal in cases of rhabdomyolysis caused by cerivastatin, the statin that was pulled from the market in 2001 because of an unacceptably high rate of fatal muscle breakdown. Subsequent large-cohort validation confirmed the association, finding that patients with two copies of the risk variant had roughly an 18% chance of developing serious muscle reactions within a year of starting therapy, compared to a fraction of a percent in patients without it.25Genetics in Medicine. Genetic factors affecting statin concentrations and subsequent myopathy: a HuGENet systematic review Pharmacogenomic testing for SLCO1B1 variants before starting statin therapy is now recommended by several clinical guidelines, though it is not yet universally adopted.
Outside of statins, malignant hyperthermia susceptibility is another clear genetic risk factor. The mutations that make a person vulnerable to anesthetic-triggered rhabdomyolysis often sit in the RYR1 gene, which controls calcium release inside muscle cells. Unlike the SLCO1B1 variant, which merely raises risk, malignant hyperthermia mutations can produce a catastrophic reaction on a single exposure. Family history is the most important screening tool, because genetic testing for malignant hyperthermia is not routinely performed before surgery.
Recognizing and Diagnosing Drug-Induced Rhabdomyolysis
The classic triad people are taught to watch for is muscle pain, weakness, and dark or tea-colored urine, but not everyone gets all three. Some patients present mainly with weakness and fatigue, especially when the cause is a chronic medication like a statin rather than an acute event like a cocaine binge. The diagnosis is confirmed when blood levels of creatine kinase (CK) exceed about five times the upper limit of normal, which typically means above roughly 1,000 U/L.26PubMed. Rhabdomyolysis In trauma and burn patients, CK measured at hospital admission was a better early predictor of impending kidney failure from rhabdomyolysis than either creatinine or urine myoglobin.27PubMed Central. Utility of Serum Creatinine, Creatine Kinase and Urinary Myoglobin in Detecting Acute Renal Failure due to Rhabdomyolysis in Trauma and Electrical Burns Patients
If you develop unexplained muscle soreness, weakness, or unusually dark urine while on any of the drug classes described above, do not wait for it to resolve on its own. Rhabdomyolysis is one of those conditions where early, aggressive treatment with intravenous fluids makes a major difference in preventing kidney damage. The offending drug usually needs to be stopped immediately, and your medical team will monitor kidney function and electrolytes closely until muscle enzyme levels fall back to normal.
Drugs That Worsen Rhabdomyolysis Outcomes Without Directly Causing It
A distinction worth making is between drugs that trigger rhabdomyolysis and drugs that make it worse once it is happening. The ibuprofen example noted earlier falls into the second category. In animal models, ibuprofen given alongside rhabdomyolysis reduced kidney filtration to a tiny fraction of normal, and that effect was not reversed by fluid resuscitation.23PubMed Central. Legal Performance-enhancing Drugs Alter Course and Treatment of Rhabdomyolysis-induced Acute Kidney Injury Caffeine was also studied in the same model as a potential worsening factor, given how commonly it is used as a performance enhancer by athletes and military populations who are at risk for exertional rhabdomyolysis.
Diuretics sit in an interesting middle zone. They can cause rhabdomyolysis indirectly through potassium depletion, as described earlier, but they can also worsen outcomes by promoting dehydration in a patient who already has muscle breakdown underway. This is one reason why aggressive intravenous fluid replacement, rather than anything that removes fluid, is the cornerstone of rhabdomyolysis treatment. Any drug that reduces blood flow to the kidneys, depletes electrolytes, or promotes dehydration becomes more dangerous when rhabdomyolysis is in the picture, even if that drug had nothing to do with starting it.