Dominic Stone
Vyvanse is a prescription stimulant used to treat ADHD in children and adults, and binge eating disorder in adults, by improving focus and impulse control. It is classified by the FDA as a Schedule II controlled drug, meaning it has a high potential for misuse and abuse. Lisdexamfetamine is the active ingredient in Vyvanse and may cause some unwanted effects, including muscle twitching. If you experience muscle twitching or other side effects, it is important to consult your doctor as soon as possible.
| Characteristics | Values |
|---|---|
| Muscle twitching | 0.44% of 28,083 people who reported side effects experienced muscle twitching |
| Other side effects | Tics, Tourette's syndrome, serotonin syndrome, allergic reactions, increased blood pressure, heart rate and body temperature, seizures, psychosis, slowed growth in children, irritability, anger, mood changes, depression, dependence, overdose, death |
| Overdose symptoms | Restlessness, tremor, muscle twitches, rapid breathing, hostility, violence, panic, muscle pain or weakness, dark-colored urine, seizures, comas |
| Treatment | Doctors can work with patients to reduce or alleviate side effects by adjusting treatment dosages |
| Precautions | Vyvanse is a controlled substance with a high potential for misuse and dependence. It is a drug of abuse and can be fatal when overdosed. |
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What You'll Learn
Serotonin syndrome
Vyvanse is a prescription stimulant used to treat ADHD in children and adults and binge eating disorder in adults by improving focus and impulse control. Lisdexamfetamine is the active ingredient in Vyvanse and may cause some unwanted effects such as muscle twitching, stiffness, or tremors.
The symptoms of serotonin syndrome can range from mild to severe and include agitation, hallucinations, fever, sweating, shivering, fast heart rate, muscle stiffness, twitching, loss of coordination, nausea, vomiting, and diarrhea. In severe cases, serotonin syndrome can lead to muscle rigidity, seizures, unconsciousness, and even death if left untreated. If you suspect you or someone you know is experiencing serotonin syndrome, it is important to seek medical attention immediately.
To be diagnosed with serotonin syndrome, a person must have been taking a drug that changes their serotonin levels and exhibit at least three of the associated signs or symptoms. Treatment for serotonin syndrome involves stopping the drug(s) or medication(s) causing the syndrome. In severe cases, hospitalization is required for close observation, and in life-threatening situations, medicines that paralyze the muscles and a temporary breathing tube and machine may be necessary to prevent further muscle damage.
It is important to be aware of the potential risks associated with taking medications that affect serotonin levels and to seek medical advice if you have any concerns.
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Tics and Tourette's syndrome
Vyvanse, or lisdexamfetamine, is a prescription stimulant used to treat ADHD in children and adults and binge-eating disorder in adults. It is associated with several side effects, one of which is muscle twitching.
Tourette's Syndrome (TS) is a neurological disorder characterised by sudden, unwanted, uncontrolled rapid and repeated movements or vocal sounds called tics. Tics can be motor (involving body movement) or vocal (involving sounds). They can be simple or complex and often occur in the head and neck area, sometimes progressing to include the torso, arms and legs. Motor tics generally develop before vocal tics.
Tics can be preceded by a premonitory urge or sensation in the affected muscle group, similar to the urge to itch or sneeze. Suppressing a tic can increase this urge, and performing the tic can reduce it. While tics are involuntary, they can be suppressed for short periods, much like blinking. Children with TS may suppress their tics at school, only to experience a marked increase at home, possibly due to the change in environment.
Tic attacks refer to severe, continuous, disabling tics that cannot be suppressed and can last from a few minutes to several hours. They often include whole-body writhing movements, muscle tensing and shaking and can cause significant anxiety for the individual and their families.
Co-occurring symptoms with TS include obsessive-compulsive disorder (OCD), attention deficit hyperactivity disorder (ADHD), anger/rages and anxiety. When tics occur with these symptoms, it is known as 'mixed neurodevelopment symptoms'.
Lisdexamfetamine can cause or worsen tics, and individuals with Tourette's Syndrome should be cautious about taking it.
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Increased blood pressure and heart rate
Vyvanse, also known as lisdexamfetamine dimesylate, is a prescription stimulant used to treat ADHD and binge-eating disorder in adults. It can also be used to treat ADHD in children over six. The drug is highly habit-forming and has a high potential for misuse and abuse.
Vyvanse can cause an increase in blood pressure and heart rate. Doctors will monitor a patient's blood pressure and heart rate before and during treatment. It is recommended that patients also monitor their own blood pressure and heart rate. If the systolic reading is 180 mm Hg or higher, or the diastolic reading is 120 mm Hg or higher, medical attention should be sought immediately. Similarly, if a resting heart rate exceeds 100 beats per minute for more than a few minutes, this could be a sign of a very fast heartbeat and medical attention should be sought.
Vyvanse may cause a fast heartbeat, also known as tachycardia. Tachycardia can be dangerous and may lead to serious complications, including stroke, heart attack, and sudden cardiac death. Tachycardia may also be a symptom of serotonin syndrome, a dangerous condition caused by a buildup of serotonin in the body. Serotonin syndrome can be life-threatening and requires emergency medical attention. Other symptoms of serotonin syndrome include muscle twitching, stiffness, loss of coordination, agitation, hallucinations, and seizures.
Vyvanse has also been known to cause Raynaud's phenomenon, a condition in which blood flow to the fingers and toes is restricted when exposed to cold temperatures. Symptoms of Raynaud's phenomenon include tingling or pain in the fingers and toes, paleness or a cold feeling in the fingertips and toes, and skin colour changes in the fingers.
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Overdose symptoms
Vyvanse is a prescription stimulant used to treat ADHD in children and adults and binge-eating disorder in adults. The active ingredient in Vyvanse, lisdexamfetamine, has a high potential for abuse and misuse, which can lead to overdose and death. An overdose of lisdexamfetamine can be fatal.
- Restlessness
- Tremors
- Muscle twitches
- Muscle pain or weakness
- Rapid breathing
- Hostility
- Violence
- Panic
- Dark-colored urine
These symptoms may be followed by depression and tiredness. Overdose may also cause seizures or comas.
If you suspect an overdose, seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
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Abuse, misuse, and addiction
Vyvanse is a prescription central nervous system stimulant used to treat attention deficit hyperactivity disorder (ADHD) and binge eating disorders. It is a Schedule II drug, which means it has therapeutic uses but also a potential for misuse and dependence. Lisdexamfetamine dimesylate, the active ingredient in Vyvanse, has a high potential for abuse and misuse, which can lead to the development of a substance use disorder, including addiction.
Ongoing misuse of central nervous system stimulants like Vyvanse can hasten the development of tolerance, physiological dependence, and addiction. With tolerance, the drug's effects become less pronounced over time, and a person may require increasingly larger doses to achieve the desired effect. Dependence means a person's system adapts to the presence of the drug, and they will only feel "normal" when the drug is present. When a person stops taking the drug, they can experience withdrawal symptoms, including significant fatigue and depression. It is important to note that the presence of tolerance and dependence does not always indicate addiction, as some individuals may develop these while taking the drug as prescribed.
Vyvanse has the potential for dependence and addiction, and in some cases of intentional misuse and overdose, it can even lead to death. Signs and symptoms of central nervous system stimulant misuse can include hyperactivity, restlessness, increased heart rate, blood pressure, and respiratory rate, flushed skin, increased sweating, dilated pupils, abdominal pain, decreased appetite, loss of coordination, anxiety, aggression, hostility, suicidal and homicidal ideation, and psychosis. It is possible to overdose on Vyvanse, and common symptoms of a stimulant overdose include agitation, blurred vision, chest pain, confusion, dark urine, diarrhea, dizziness, fever, headache, muscle cramps, spasms, pain, nausea, nervousness, palpitations, and more.
Vyvanse is manufactured as a prodrug, which may limit its potential for misuse as it needs to pass through the gastrointestinal tract to become active. As a result, snorting or injecting it would not produce any effects. Additionally, its pharmacokinetic properties limit its oral misuse potential, as absorption may be delayed even if a large dose is taken over a short period, reducing the euphoria that can lead to misuse. While the drug's abuse-deterrent capabilities are still under study, it is clear that Vyvanse has the potential for abuse, dependence, and addiction, and it is crucial to use it only as prescribed.
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Frequently asked questions
Yes, muscle twitching is a common side effect of taking Vyvanse. This may be a symptom of serotonin syndrome, which is caused by a buildup of serotonin in the body. If you experience muscle twitching, consult your doctor right away.
Serotonin syndrome may also cause anxiety, restlessness, a fast heartbeat, fever, sweating, muscle spasms, nausea, vomiting, diarrhea, and/or hallucinations. If you experience any of these symptoms, seek immediate medical attention.
Vyvanse has a high potential for misuse and dependence, and may cause or worsen tics and Tourette's syndrome. It can also lead to an increased risk of stroke, heart attack, and sudden death in individuals with high blood pressure, heart disease, or a heart defect. Additionally, Vyvanse may cause new or worsening psychosis, especially in those with a history of mental illness.
