Symmetrel – An In-Depth Overview of the Drug, Uses, and Side Effects


$0,77 per pill


Active ingredient: Amantadine

Dosage: 100mg

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Short General Description of the Drug Symmetrel: Symmetrel (Amantadine)
Symmetrel, also known as amantadine, is a pharmaceutical drug primarily used to treat and prevent certain viral infections. It belongs to a class of antiviral medications known as adamantanes and is commonly prescribed to combat influenza A virus infections.

How Symmetrel Works?
Symmetrel works by inhibiting the replication of the influenza A virus in the body. It achieves this by blocking the ion channel of the virus, which prevents the virus from accessing and infecting healthy cells. By inhibiting viral replication, Symmetrel effectively reduces the severity and duration of influenza symptoms.

What Conditions Can Symmetrel Treat?
Symmetrel has several medical applications, including:
1. Influenza A treatment: Symmetrel is commonly prescribed to alleviate the symptoms of influenza A virus infections. It can reduce fever, muscle aches, fatigue, and other flu-related symptoms.
2. Parkinson’s disease: Symmetrel is also used as an adjunctive treatment for Parkinson’s disease. It can help control certain movement disorders and alleviate specific Parkinson’s symptoms.
3. Drug-induced extrapyramidal reactions: Symmetrel can be used to manage extrapyramidal symptoms caused by certain medications, such as antipsychotics.
4. Fatigue in multiple sclerosis: Symmetrel may improve fatigue symptoms in patients with multiple sclerosis.

How to Use and Dosage Recommendations:
Symmetrel is available in various formulations, including capsules, syrup, and extended-release tablets. The specific dosage and duration of treatment will depend on the individual’s condition, age, and overall health.
For influenza A treatment, the recommended dose is typically 200 mg per day for adults. However, doctors may adjust the dosage based on the severity of symptoms and the patient’s response to the treatment.
For Parkinson’s disease, the initial dosage is often 100 mg per day, which is gradually increased over time. It is essential to follow the prescribed dosage and not exceed the recommended limits.

Possible Side Effects:
Like any medication, Symmetrel may cause certain side effects. Common side effects may include:
1. Nervousness or anxiety
2. Dizziness or lightheadedness
3. Insomnia
4. Dry mouth
5. Nausea or vomiting
It is vital to report any severe or persistent side effects to your healthcare provider immediately.

Symmetrel (amantadine) is a potent antiviral drug used to treat and prevent influenza A virus infections. It also has applications in the management of Parkinson’s disease, drug-induced extrapyramidal reactions, and fatigue in multiple sclerosis. However, it is crucial to consult with a healthcare professional and follow the prescribed dosage for safe and effective use of Symmetrel.

2. Indications for use and dosage of Symmetrel

Indications for use:

  1. Treatment and prevention of influenza A virus in adults and children.
  2. Reduction of symptoms associated with Parkinson’s disease and parkinsonism in adults.

Symmetrel is approved by the Food and Drug Administration (FDA) as an antiviral and antiparkinsonian drug.

Influenza A Virus:

Symmetrel is primarily prescribed for the treatment and prevention of influenza A virus infections. It is especially effective against strains that are susceptible to the drug. It is important to note that Symmetrel does not treat influenza B virus infections or other viral respiratory illnesses.

For the treatment of influenza, Symmetrel should be initiated within 24 to 48 hours after the onset of symptoms. The recommended adult dosage is 200 mg daily, divided into two equal doses of 100 mg each. Children aged 1 to 9 years should receive 4.4 mg/kg body weight per day, while children aged 10 to 12 years should receive a total daily dose of 200 mg. The duration of treatment generally varies from 7 to 10 days.

As a preventive measure against influenza A virus, Symmetrel is taken during periods of potential exposure, such as flu outbreaks. The usual adult dosage for prophylaxis is 200 mg daily, while children should receive a daily dose of 4.4 mg/kg body weight.

Parkinson’s Disease:

Symmetrel is also prescribed for individuals with Parkinson’s disease or parkinsonism to alleviate associated symptoms. It is effective in improving muscle control and reducing tremors, stiffness, and shakiness.

The recommended initial Symmetrel dosage for Parkinson’s disease is 100 mg daily, administered as a single dose or in two divided doses. After one to several weeks, the dosage may be increased based on the individual’s response. Maximum doses should not exceed 400 mg per day.

In elderly patients, as well as those with severe renal impairment, dose adjustments may be necessary to ensure safety and efficacy.

It is important to follow the prescribed dosage schedule and seek medical advice before making any changes to the treatment plan.


$0,77 per pill


Active ingredient: Amantadine

Dosage: 100mg

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Benefits of Symmetrel (amantadine) for treatment of Parkinson’s disease

Parkinson’s disease is a progressive neurological disorder that affects millions of people worldwide. It is characterized by symptoms such as tremors, difficulty in movement, and stiffness. However, there is no cure for Parkinson’s disease, and the focus of treatment is on managing its symptoms. One effective medication for managing these symptoms is Symmetrel (amantadine).

1. Reduces Tremors and Stiffness

Symmetrel has been found to effectively reduce tremors and stiffness in individuals with Parkinson’s disease. Tremors are involuntary shaking movements that are commonly seen in Parkinson’s patients, while stiffness can make movement difficult and uncomfortable. By targeting specific areas of the brain, Symmetrel helps to alleviate these symptoms, providing much-needed relief to patients.

2. Enhances Movement

One of the major challenges faced by individuals with Parkinson’s disease is difficulty in movement. Symmetrel has the ability to enhance movement by increasing the release of dopamine, a neurotransmitter that plays a key role in coordinating movement. This medication improves muscle control and coordination, allowing patients to have better mobility and perform daily activities with greater ease.

3. Increases Energy and Alertness

Individuals with Parkinson’s disease often experience fatigue and lethargy as a result of their condition. However, Symmetrel has been shown to increase energy levels and alertness in patients. This can have a significant impact on their daily lives, enabling them to remain active and engaged in their usual activities. Being more alert and energetic can also improve their overall quality of life.

4. Supports Mental Function

Aside from its benefits for motor symptoms, Symmetrel has also been found to support mental function in individuals with Parkinson’s disease. It can help improve cognitive functioning, memory, and overall mental clarity. This is especially important as cognitive decline can occur as Parkinson’s disease progresses, and Symmetrel can help alleviate these symptoms, allowing patients to maintain their cognitive abilities for longer.

5. Well-Tolerated Medication

Symmetrel is generally well-tolerated by patients with Parkinson’s disease, with relatively few side effects compared to other medications. Common side effects include dry mouth, dizziness, and difficulty sleeping, but these are often mild and can be managed effectively. The overall safety profile of Symmetrel makes it a viable option for long-term treatment.

In conclusion, Symmetrel (amantadine) offers several benefits for individuals with Parkinson’s disease. It reduces tremors and stiffness, enhances movement, increases energy and alertness, supports mental function, and is generally well-tolerated. By effectively managing these symptoms, Symmetrel helps improve the quality of life for Parkinson’s disease patients, allowing them to live more fulfilling and active lives.

Benefits of Symmetrel for Parkinson’s Disease


Symmetrel is an antiviral medication commonly prescribed for the treatment of Parkinson’s disease. It contains the active ingredient amantadine, which helps alleviate symptoms associated with this neurological disorder. The drug offers various benefits and can significantly improve the quality of life for individuals affected by Parkinson’s disease.

4. Symmetrel as a Treatment for Parkinson’s Disease:

Symmetrel has proven to be effective in managing motor symptoms associated with Parkinson’s disease. Below are some key advantages of using Symmetrel as a treatment option:

  1. Enhanced Motor Function: Symmetrel helps improve motor function in individuals with Parkinson’s disease, reducing stiffness, tremors, and bradykinesia (slowed movement). This improved mobility allows patients to perform daily activities more easily and with less discomfort.
  2. Reduced Dyskinesia: Dyskinesia, characterized by involuntary and abnormal movements, can often occur as a side effect of other Parkinson’s medications. Symmetrel can effectively reduce dyskinesia, helping patients achieve better control over their movements.
  3. Increase in Levodopa Effectiveness: Levodopa is a commonly prescribed medication for Parkinson’s disease. However, its effectiveness can diminish over time. When combined with Symmetrel, levodopa’s efficacy can be enhanced, allowing for better symptom control.
  4. Mental Function Improvement: Parkinson’s disease can also impact cognitive function. Symmetrel has been shown to improve cognitive abilities, such as attention, memory, and executive functioning, providing patients with mental clarity and improved overall cognitive performance.
  5. Neuroprotective Effects: Research suggests that Symmetrel may have neuroprotective effects, protecting brain cells from the damage caused by Parkinson’s disease progression. This potential benefit contributes to maintaining the long-term functionality and slowing the disease’s progression.

According to Parkinson’s Foundation, Symmetrel is well-tolerated by most individuals, with common side effects including dizziness, insomnia, and dry mouth. It is important to consult a healthcare professional before starting any new medication.

With its numerous advantages, Symmetrel is a valuable treatment option that can help individuals with Parkinson’s disease regain control over their motor function, alleviate dyskinesia, improve cognitive abilities, and potentially slow disease progression. Talk to your healthcare provider today to determine if Symmetrel is the right choice for your Parkinson’s management plan.

Use of Symmetrel (Amantadine) for Parkinson’s Disease

Amantadine, commonly known by its brand name Symmetrel, is a medication primarily prescribed to treat Parkinson’s disease and other conditions such as influenza A. It belongs to a class of drugs called antivirals, which also possess significant antiparkinsonian effects. Symmetrel is available in the form of oral capsules and syrup, making it convenient for patients to use.

1. Mechanism of Action

Symmetrel exerts its therapeutic effects through its actions on several different neurotransmitters in the brain. By increasing the release of dopamine, a neurotransmitter associated with movement and coordination, Symmetrel helps to alleviate some of the symptoms of Parkinson’s disease. Additionally, it inhibits the reuptake of dopamine, enhancing its availability in the brain. Moreover, Symmetrel is known to block the activity of glutamate, another neurotransmitter associated with the progression of Parkinson’s disease.

2. Symptomatic relief in Parkinson’s Disease

Symmetrel is primarily used to provide relief from the symptoms of Parkinson’s disease. These symptoms often include muscle stiffness, tremors, impaired balance, and difficulties with movement. Symmetrel helps to improve these motor symptoms, leading to increased mobility and functionality for patients.

3. Decreased Dyskinesias

Dyskinesias, abnormal involuntary movements, can occur as a side effect of long-term treatment with levodopa, the main medication for Parkinson’s disease. When Symmetrel is used in conjunction with levodopa, it has been found to reduce the incidence and severity of dyskinesias, providing a more comfortable treatment experience for patients.

4. Potential Side Effects

Like any medication, Symmetrel may cause side effects. However, it is important to note that not all patients will experience these side effects, and some may be more prone to specific adverse reactions. Common side effects of Symmetrel include nausea, dizziness, blurred vision, dry mouth, insomnia, and constipation. It is advisable to discuss any concerns or persistent side effects with a healthcare professional.

5. Availability and Cost

Symmetrel is a widely available medication and can be found in most pharmacies. The cost of Symmetrel can vary depending on factors such as the country, insurance coverage, and dosage strength. On average, a bottle of Symmetrel oral capsules containing 100 mg of amantadine can range from $50 to $100, providing a one-month supply for patients. It is recommended to check with local pharmacies or online sources for current pricing information.

6. Consultation with a Healthcare Provider

Before starting Symmetrel or making any changes to the treatment regimen, it is essential to consult with a healthcare provider, preferably a neurologist or movement disorder specialist. They can provide personalized advice, adjust dosages, and monitor any potential side effects to ensure the most effective and safe treatment plan for each individual.

7. Conclusion

Symmetrel, or amantadine, offers relief from the symptoms of Parkinson’s disease and helps to improve the quality of life for patients. By understanding its mechanism of action, potential benefits, and side effects, individuals can make informed decisions alongside their healthcare providers to optimize their Parkinson’s disease management.


$0,77 per pill


Active ingredient: Amantadine

Dosage: 100mg

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Symmetrel (Amantadine) Dosage and Administration

Proper dosage and administration of Symmetrel (Amantadine) are crucial for the effective treatment of certain conditions. It is important to follow the prescribed dosage and consult with a healthcare professional before starting or adjusting the medication.

1. Dosage for Parkinson’s Disease

The recommended dosage of Symmetrel for the treatment of Parkinson’s disease is as follows:

  • Initial dose: 100 mg once daily
  • If necessary, the dosage can be increased gradually every 1 to 2 weeks.
  • The maximum dosage is 300 mg per day.
  • If the patient experiences side effects, the dosage may be reduced.

It is important to note that the effectiveness of Symmetrel may diminish after a few months of continuous usage in some patients with Parkinson’s disease. Therefore, periodic evaluation and adjustment of the dosage may be necessary.

2. Dosage for Influenza A Virus

When using Symmetrel to prevent or treat influenza A virus infection, the dosage may vary depending on the specific situation. The recommended dosage is as follows:

  • Prophylaxis (prevention) of influenza A virus:
Patient Category Dosage
Adults 100 mg once daily
Children (1 to 9 years old) 2 mg per kg of body weight once daily
  • Treatment of influenza A virus:
Patient Category Dosage
Adults 100 mg twice daily for 5 days
Children (1 to 9 years old) 2 mg per kg of body weight per day divided into two doses for 5 days

Note that Symmetrel should be initiated within 24 to 48 hours of influenza A virus exposure or onset of symptoms for maximum effectiveness.

3. Dosage for Drug-Induced Extrapyramidal Reactions

When using Symmetrel to manage drug-induced extrapyramidal reactions (EPS), the recommended dosage is as follows:

  • Adults: 100 mg once or twice daily

Symmetrel is typically administered with the offending antipsychotic drug to alleviate EPS symptoms. The dosage may be adjusted based on individual response and tolerability.

4. Dosage for Fatigue in Multiple Sclerosis

For the treatment of fatigue associated with multiple sclerosis, the recommended dosage of Symmetrel is:

  • Adults: 100 mg once daily in the morning

Dosage adjustment may be necessary based on individual response and tolerability.

5. Dosage Considerations

Before starting Symmetrel, the following factors should be taken into consideration:

  • Renal impairment: Symmetrel dosage should be adjusted in patients with impaired renal function.
  • Elderly patients: Due to age-related changes in kidney function, dosage adjustments may be necessary.
  • Pregnancy and breastfeeding: Symmetrel should be used during pregnancy or breastfeeding only if the benefits outweigh the potential risks.

It is important to consult with a healthcare professional for appropriate dosage adjustments and to discuss any potential risks or concerns.

The Side Effects of Symmetrel (Amantadine)

1. Overview

Symmetrel (amantadine) is a medication commonly prescribed to treat symptoms caused by certain viral infections, such as influenza A and Parkinson’s disease. While Symmetrel can provide significant relief for patients, it is important to be aware of potential side effects that may occur during its use.

2. Common Side Effects

Like any other medication, Symmetrel may cause some side effects. These side effects are usually mild and typically go away on their own. Common side effects may include:

  • Dizziness or lightheadedness
  • Nausea or vomiting
  • Loss of appetite
  • Dry mouth
  • Trouble sleeping
  • Blurred vision

3. Serious Side Effects

While less common, there are potentially serious side effects associated with Symmetrel that require immediate medical attention. These can include:

  • Allergic reactions, such as rash, itching, or swelling
  • Difficulty breathing or chest tightness
  • Irregular heartbeat or changes in heart rhythm
  • Mental or mood changes, including confusion or hallucinations
  • Seizures

4. Precautions

To minimize the risk of experiencing severe side effects, it is vital to follow the prescribed dosage and inform your healthcare provider of any underlying medical conditions or medications you may be taking. Additionally, it is crucial to be cautious while driving or operating heavy machinery since Symmetrel may cause drowsiness or lightheadedness.

5. Drug Interactions

Certain medications, vitamins, and herbal supplements may interact negatively with Symmetrel, leading to increased side effects or reduced effectiveness. It is essential to disclose all medications, including over-the-counter drugs, to your doctor before starting Symmetrel. Examples of medications that may cause interactions include:

  • Anticholinergic drugs
  • Antihistamines
  • Quinidine
  • Quinine
  • Diuretics
  • Antidepressants

6. Reporting Side Effects

If you experience any side effects while taking Symmetrel, it is crucial to report them to your healthcare provider. Prompt reporting can help in monitoring the drug’s safety and efficacy and enable early interventions if needed. Your doctor may adjust your dosage or suggest an alternative treatment based on your symptoms.

7. Conclusion

In conclusion, while Symmetrel can provide relief for viral infections and Parkinson’s disease symptoms, it is important to be aware of potential side effects. Common side effects of Symmetrel include dizziness, nausea, loss of appetite, and trouble sleeping. However, serious side effects such as allergic reactions, changes in heart rhythm, and seizures require immediate medical attention. By taking necessary precautions, reporting any side effects promptly, and being cautious about drug interactions, patients can benefit from the therapeutic effects of Symmetrel while minimizing risks.

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Category: Anti Viral

Tags: Symmetrel, Amantadine


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