
Muscle spasms can be caused by a variety of factors, including stress, caffeine, and stimulant drugs. Certain medications have also been linked to muscle spasms and joint pain as side effects. These include statins, antibiotics, acne medications, antidepressants, epilepsy drugs, and pregabalin (Lyrica). In some cases, muscle spasms may be a warning sign of nerve damage or underlying conditions such as neuropathy or neuromyotonia. It is important to consult a doctor if muscle spasms occur after starting a new medication or changing dosage. While drug-induced myopathies are typically mild, they can sometimes lead to severe symptoms and persistent complications, emphasizing the need for early recognition and appropriate management.
| Characteristics | Values |
|---|---|
| Medication causing muscle spasms | Pregabalin (Lyrica), Isotretinoin, Antidepressants, Epilepsy and Psychosis Drugs, Stimulant Drugs, Statins, Fluoroquinolone Antibiotics, Fibrates, Oral Steroids, Selective Serotonin Reuptake Inhibitors (SSRIs) |
| Muscle spasm causes | Stress, Lack of Exercise, Injury, Overuse, Disease, Alcoholism, Infection, Nerve Damage, Diabetes |
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What You'll Learn

Antidepressants and epilepsy drugs
First-generation antidepressants (also known as tricyclic antidepressants) are known to potentially trigger seizures, which has made clinicians reluctant to prescribe these medications to people with epilepsy. On the other hand, newer second-generation antidepressants may help epilepsy by reducing seizure frequency. While the risk of seizures from antidepressants is generally low when used at therapeutic doses, it is not non-existent. The following antidepressants have been associated with a 'low to moderate' risk of seizures: escitalopram, paroxetine, mirtazapine, sertraline, and citalopram.
SSRIs (Selective Serotonin Reuptake Inhibitors) and SNRIs (Serotonin-Norepinephrine Reuptake Inhibitors) are considered safe for patients with epilepsy when used at therapeutic doses. However, four antidepressants can facilitate seizures at therapeutic doses: clomipramine, bupropion, amoxapine, and maprotypline. It is important to note that antidepressant use in people with epilepsy requires special consideration, and specialist advice should be sought for those taking antiseizure medications (ASMs).
Epilepsy drugs may also cause muscle spasms, specifically eyelid twitching. Pregabalin (Lyrica), a medication used to treat certain types of seizures and nerve pain, can cause muscle pain and spasms as a side effect. These side effects are usually mild and go away over time.
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Cholesterol-lowering drugs
Muscle spasms can be caused by various factors, including certain medications. While statins are a popular group of prescription medications used to treat high cholesterol, they have also been associated with muscle pain as a side effect. This side effect can manifest in different ways, and it is important to note that not everyone experiences muscle pain when taking statins.
Statins work by preventing the liver from producing excess cholesterol, thereby lowering overall cholesterol levels. They are commonly prescribed to individuals at high risk for heart disease as they help reduce the likelihood of hospitalization and death from severe cardiovascular events such as heart attacks and strokes. Despite their effectiveness, statins have been linked to muscle pain in some individuals.
The muscle pain associated with statins can vary in intensity and presentation. While most cases of statin-related muscle pain are mild, rare instances of serious muscle damage have been reported. A life-threatening condition called rhabdomyolysis, or severe muscle breakdown, can occur in a small number of people taking statins, especially at high doses or in combination with other drugs. It is important to consult a doctor if you experience muscle pain while taking statins, as they can advise on adjusting the dosage, switching to a different statin, or exploring alternative cholesterol-lowering medications.
There are several management options available for statin-related muscle pain. These include adjusting the dosage, taking a statin vacation under medical supervision, or switching to a different statin or cholesterol-lowering medication. Lifestyle changes, such as a heart-healthy diet, regular exercise, and smoking cessation, can also help lower cholesterol levels and reduce the need for higher statin doses. Additionally, moderate exercise may guard against some of the statin-related side effects on muscles.
While statins are commonly associated with muscle pain, other medications can also contribute to this issue. For example, certain antibiotics, acne medications, and pregabalin (Lyrica) have been linked to muscle pain and spasms. It is always advisable to consult a healthcare professional if you experience muscle spasms or pain after starting a new medication or changing your dosage. They can provide guidance and recommend appropriate adjustments or alternative treatments to manage your condition effectively.
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Antibiotics
Fluoroquinolone antibiotics, such as levofloxacin, are one group of antibiotics that have been linked to muscle and joint issues. These problems can occur within a few days of starting the medication or even several months later. However, it is important to note that muscle and joint problems due to fluoroquinolones are more common in certain groups of people, including those taking corticosteroid medications or those with specific medical conditions.
Another antibiotic, amoxicillin-clavulanic acid, has been reported in a few cases to induce myoclonus, which can manifest as muscle spasms or seizures. Myoclonus associated with amoxicillin-clavulanic acid has been described as generalized, multifocal, or subtle, affecting small muscle groups. It is important to note that myoclonus is a rare adverse effect of this antibiotic, and only a few cases have been reported.
Other antibiotics, such as beta-lactams (including cephalosporins, carbapenems, and penicillins), have been associated with seizures as a known side effect. However, among penicillins, there are relatively few reports of an association between amoxicillin-clavulanic acid and seizures, despite its broad usage.
If you experience muscle spasms or joint pain while taking antibiotics, it is important to consult your healthcare provider. They can evaluate your symptoms, consider alternative antibiotics or treatments, and recommend appropriate management options to alleviate your discomfort.
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Stimulant drugs
While stimulant drugs can cause muscle issues, the sources I found did not specifically mention muscle spasms. However, here is some information about the effects of stimulant drugs on muscles:
Additionally, stimulant drugs can place a burden on the heart, leading to deterioration of the heart muscle (cardiomyopathy), high blood pressure, and heartbeat irregularities (arrhythmias). These conditions can increase the risk of heart disease and stroke, which may result in muscle weakness, loss of movement, or paralysis.
It is important to note that the specific effects of stimulant drugs may vary depending on the type of drug, dosage, frequency of use, and individual factors. If you are experiencing any muscle spasms or other health issues related to stimulant drug use, it is crucial to seek medical advice.
Furthermore, while not specifically classified as stimulant drugs, certain medications have been known to cause muscle spasms. These include antidepressants, epilepsy drugs, and psychosis drugs, which can sometimes cause eyelid twitching or muscle twitches. Other medications that may contribute to muscle spasms include diuretics, which are often prescribed for high blood pressure or heart disease, as they can lower potassium levels in the body.
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Over-the-counter painkillers
While muscle spasms can be caused by various factors, such as stress, caffeine, injury, or certain medications, over-the-counter (OTC) painkillers can be used to treat muscle spasms and the associated pain.
OTC medications are often recommended as a first-line therapy for muscle spasms caused by conditions like acute lower back pain or tension headaches. These treatments include nonsteroidal anti-inflammatory drugs (NSAIDs), acetaminophen, or a combination of both. NSAIDs work by blocking the production of substances that cause inflammation and pain in the body. They are typically available as oral tablets, capsules, or suspensions, and sometimes as chewable tablets for children. It is important to note that NSAIDs may cause side effects such as an upset stomach and dizziness.
Acetaminophen, another OTC option, can also help manage sore muscles. However, it is important to discuss the benefits and risks of this medication with a doctor, as it can form a dependence and interact with alcohol and other drugs.
In addition to OTC painkillers, muscle relaxers are also used to treat muscle spasms and spasticity. However, these are prescription medications and are not available as OTC drugs in the United States. Muscle relaxers, or muscle relaxants, include antispasmodics and antispastics. Antispasmodics, such as tizanidine, are used to treat muscle spasms, while antispastics are used for muscle spasticity. Centrally acting SMRs, a type of muscle relaxant, work in conjunction with rest and physical therapy to relieve muscle spasms by inducing a sedative effect or preventing nerves from sending pain signals to the brain.
While OTC painkillers can provide relief for muscle spasms, it is always advisable to consult a doctor or pharmacist to determine the most suitable treatment option based on individual needs and considerations.
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Frequently asked questions
Yes, certain medications can cause muscle spasms. Some examples include antidepressants, epilepsy and psychosis drugs, and stimulant drugs such as amphetamines.
Muscle spasms can be caused by various factors, including stress, fatigue, dehydration, and exercise or physical activity.
Drug-induced myopathies can present with a range of symptoms, including muscle pain, cramps, muscle weakness, and exercise intolerance.
If you experience muscle spasms after starting a new medication or changing your dose, it is important to consult your doctor or healthcare provider. They can advise you on any necessary adjustments or alternative treatments to relieve the spasms.











































