Symmetrel – Description, Antiviral Medications Overview, Emergency Guidelines, Interactions, OTC Choices, Use in Dogs, Nursing Process


Symmetrel $0,77 per pill

Active Ingredient:Amantadine


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Overview of Symmetrel

Symmetrel is an antiviral medication that is commonly prescribed for the treatment and prevention of infections caused by the influenza A virus. Its active ingredient is amantadine hydrochloride, a drug that works by preventing the spread of the virus in the body.

Main uses of Symmetrel:

  • Treatment of influenza A virus infections
  • Prevention of influenza A virus infections in high-risk individuals
  • Management of Parkinson’s disease symptoms

It is important to note that Symmetrel is specifically effective against influenza A viruses and is not recommended for the treatment of other viral infections.

How does Symmetrel work?

Symmetrel functions by blocking a specific protein in the influenza A virus, thus preventing its replication and further spread in the body. By inhibiting the virus’s ability to reproduce, Symmetrel helps to control the infection and reduce the severity and duration of symptoms.

Administration and dosage:

Symmetrel is available in multiple forms, including capsules, tablets, and oral solutions. The dosage may vary depending on the individual’s age, medical condition, and the specific purpose of treatment.

It is crucial to follow the healthcare provider’s instructions and adhere to the prescribed dosage regimen. Abruptly discontinuing the medication or changing the dosage without medical guidance can be detrimental to the treatment’s effectiveness.

Possible side effects:

Like any medication, Symmetrel carries the risk of side effects. Common side effects may include:

  • Nervousness
  • Dizziness
  • Insomnia
  • Nausea
  • Loss of appetite

If these side effects persist or worsen, it is important to seek medical advice. Additionally, rare but severe side effects such as allergic reactions or psychiatric symptoms may occur. If any of these symptoms arise, immediate medical attention is necessary.

It is crucial to discuss the potential risks and benefits of Symmetrel with a healthcare professional before initiating treatment, especially if you have any underlying medical conditions or are taking other medications.

Overview of Available Antiviral Medications, Including Symmetrel

Antiviral medications play a crucial role in the treatment and management of viral infections. These medications are designed to inhibit the growth and replication of viruses within the body. One such antiviral medication is Symmetrel (amantadine hydrochloride), which has been used for several decades as a treatment for certain viral infections.

About Symmetrel

Symmetrel is an antiviral medication that is primarily used to treat and prevent influenza A, a common strain of the flu virus. It belongs to a class of medications known as adamantanes, which work by blocking the action of a specific protein called M2, inhibiting the release of viral genetic material into host cells.

The active ingredient in Symmetrel, amantadine hydrochloride, exhibits antiviral activity against the influenza A virus. It is available in various formulations, including oral capsules, tablets, and syrup, making it convenient for different patient populations.

Benefits and Effectiveness

Symmetrel is known for its effectiveness in reducing the severity and duration of symptoms associated with influenza A. When taken within 24 to 48 hours of symptom onset, it can help shorten the period of illness and improve overall recovery time. The medication can also be used to prevent influenza A in individuals who have been exposed to the virus.

Moreover, Symmetrel has shown some efficacy against other viral infections, such as respiratory syncytial virus (RSV) and some strains of the herpes virus. However, it is important to note that it is not effective against influenza B or other types of respiratory viruses.

Usage and Dosage

The dosage of Symmetrel may vary depending on the age, weight, and specific condition of the patient. It is typically taken orally, with or without food, as directed by a healthcare provider. In the case of influenza treatment, the recommended dosage for adults is usually 200 mg per day, divided into two doses of 100 mg each. For children, the dosage is adjusted based on their weight and age.

It is important to strictly follow the prescribed dosage and schedule to ensure optimal results and minimize the risk of adverse effects.

Possible Side Effects

While Symmetrel is generally well-tolerated, some individuals may experience certain side effects. The most commonly reported side effects include:

  • Difficulty sleeping
  • Dizziness or lightheadedness
  • Nervousness or anxiety
  • Nausea or vomiting
  • Dry mouth
  • Loss of appetite

These side effects are usually mild and transient, resolving on their own without the need for medical intervention. However, if any of these side effects persist or become severe, it is advisable to speak with a healthcare professional.

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Precautions and Considerations

Before starting Symmetrel or any antiviral medication, it is important to inform your healthcare provider about any pre-existing medical conditions, allergies, or medications you are currently taking. Symmetrel may interact with certain medications, such as drugs that affect the central nervous system or those that have anticholinergic properties.

Additionally, Symmetrel should be used with caution in individuals with renal impairment or a history of seizure disorders. It is not recommended for use in pregnant or breastfeeding women unless specifically prescribed by a healthcare provider.

To ensure the safe and effective use of Symmetrel, always follow the instructions provided by your healthcare professional and refer to trusted sources of information for comprehensive guidance.


Symmetrel $0,77 per pill

Active Ingredient:Amantadine


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Guidelines for Emergency Situations Related to Symmetrel Usage

Symmetrel (generic name: Amantadine) is an antiviral medication that is used to treat and prevent certain viral infections. While Symmetrel can be highly effective, it is important to be aware of potential emergency situations that may arise from its usage. Here are some guidelines to follow in case of emergencies:

Allergic Reactions

In rare cases, individuals may experience allergic reactions to Symmetrel. If you notice any signs of an allergic reaction, such as hives, difficulty breathing, or swelling of the face, lips, tongue, or throat, it is important to seek immediate medical attention. Anaphylaxis, a severe allergic reaction, can be life-threatening, and prompt treatment is crucial.

According to the Mayo Clinic, it is recommended to call emergency services or go to the nearest emergency room if you suspect an allergic reaction to Symmetrel.

Acute Adverse Effects

While Symmetrel can be well-tolerated by most individuals, it is possible to experience acute adverse effects that require immediate attention. If you experience any of the following symptoms, it is essential to contact your healthcare provider or seek emergency medical care:

  • Severe headache
  • Chest pain or heart palpitations
  • Sudden changes in mood or behavior
  • Uncontrolled muscle movements or tremors
  • Seizures
  • Shortness of breath
  • Significant dizziness or fainting

These symptoms may indicate a serious adverse reaction to Symmetrel that requires immediate medical attention. It is important not to ignore or dismiss these symptoms, as prompt treatment can prevent further complications.

If you are unsure whether your symptoms require emergency care, it is best to err on the side of caution and seek medical advice.

In cases of emergency, call your local emergency number or go to the nearest emergency department for immediate assistance.


  1. Mayo Clinic: Trusted source for medical information and guidelines.

Interactions between Symmetrel and Other Medications for Similar Conditions

When it comes to medications for similar conditions, it is important to consider the potential interactions that can occur when combining Symmetrel with other commonly prescribed drugs. These interactions can vary in severity and may lead to adverse effects or reduced efficacy of the medications. Therefore, it is crucial for healthcare professionals and patients to be aware of these interactions to ensure safe and effective treatment.

1. Interactions with Anticholinergic Medications

Symmetrel, also known as amantadine, is an antiviral medication commonly used in the treatment of influenza A and Parkinson’s disease. When used alongside anticholinergic medications, such as oxybutynin or tolterodine, potential interactions may occur. These interactions can lead to an increased risk of side effects like dry mouth, constipation, blurred vision, and confusion.

Healthcare professionals should closely monitor patients who are prescribed both Symmetrel and anticholinergic medications, adjusting the doses as necessary and monitoring for any signs of adverse effects.

2. Interactions with Dopamine Agonists

For patients with Parkinson’s disease, Symmetrel is often prescribed alongside dopamine agonists like pramipexole or ropinirole. While the combination of Symmetrel and dopamine agonists can provide effective symptom relief, it should be noted that certain interactions may occur.

One possible interaction is an increased risk of dyskinesia (abnormal involuntary movements) when Symmetrel is used in combination with dopamine agonists. Monitoring for such side effects and adjusting the dosage accordingly is crucial to maintaining optimal treatment outcomes.

3. Interactions with Antidepressants

When considering Symmetrel alongside antidepressant medications, it is essential to be aware of potential interactions. Combining Symmetrel with selective serotonin reuptake inhibitors (SSRIs) or tricyclic antidepressants can lead to an increased risk of side effects, such as serotonin syndrome.

Healthcare professionals should evaluate the potential benefits and risks of using Symmetrel alongside antidepressant medications, carefully monitoring patients for any signs of serotonin syndrome, such as agitation, confusion, rapid heartbeat, or high blood pressure.

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4. Interactions with Antipsychotic Medications

In patients prescribed antipsychotic medications, caution must be exercised when considering the use of Symmetrel alongside these drugs. Potential drug interactions can occur, particularly with medications that block dopamine receptors.

Combining Symmetrel with antipsychotic medications like haloperidol or risperidone can increase the risk of side effects such as extrapyramidal symptoms (movement disorders) or neuroleptic malignant syndrome (a potentially life-threatening condition).

Monitoring patients closely for any signs of adverse effects and adjusting the medication regimen as needed is vital in managing these potential interactions.


When it comes to the use of Symmetrel alongside other medications for similar conditions, healthcare professionals need to consider potential drug interactions to ensure patient safety and optimize treatment outcomes. Understanding these critical interactions and their potential risks allows healthcare professionals to make informed decisions and provide necessary adjustments to the medication regimen, leading to better patient care.

Leading Over-the-Counter Antiviral Choices

When it comes to combating viruses and their associated symptoms, many individuals turn to over-the-counter (OTC) antiviral medications. These readily accessible options can provide relief and shorten the duration of viral illnesses. In this article, we will analyze the leading OTC antiviral choices, considering the target audience’s need for affordable medications.

1. L-Lysine

L-Lysine is a popular OTC antiviral supplement known for its ability to inhibit the replication of the herpes simplex virus. This amino acid works by blocking the uptake of arginine, an essential nutrient for viral growth. Studies have shown that L-Lysine can help reduce the frequency and severity of cold sores caused by the herpes virus. It is available in various forms, including tablets, capsules, and creams.

According to the National Library of Medicine, L-Lysine is generally safe for most individuals, with rare reported side effects such as stomach pain or diarrhea.

2. Zinc

Zinc is another OTC antiviral option that has gained popularity for its immune-boosting properties. Research suggests that zinc can inhibit viral replication and shorten the duration of common cold symptoms. Zinc lozenges or nasal sprays are commonly used to alleviate symptoms of respiratory viral infections. However, it is important to follow the recommended dosage as excessive zinc intake can lead to adverse effects such as nausea and copper deficiency.

The National Institutes of Health provides comprehensive information on dosage guidelines and potential interactions with other medications or supplements.

3. Elderberry

Elderberry, derived from the fruit of the Sambucus nigra plant, has long been used as a natural remedy for viral infections. It is believed to possess antiviral properties that can inhibit the replication of influenza viruses. Elderberry syrup or capsules are commonly consumed to alleviate symptoms of the flu. However, it is worth noting that more research is needed to fully understand its effectiveness and potential side effects.

The National Center for Biotechnology Information provides valuable insights into the therapeutic potential of elderberry, cautioning individuals to consult healthcare professionals before use.

4. Echinacea

Echinacea is a popular herbal remedy known for its immune-stimulating properties. It is often used to prevent or shorten the duration of viral respiratory infections, such as the common cold. Echinacea supplements are available in various forms, including tablets, capsules, and teas. However, it is important to note that evidence regarding its efficacy in treating viral infections remains inconclusive.

The National Center for Complementary and Integrative Health offers detailed information on echinacea, highlighting potential drug interactions and adverse effects.


When searching for OTC antiviral options, it is crucial to consider the specific needs of the target audience. L-Lysine, zinc, elderberry, and echinacea are among the leading choices that individuals can explore. However, always consult healthcare professionals and reliable sources such as the ones mentioned above before starting any new medication or supplement. Stay informed and make well-informed decisions regarding your health.


Symmetrel $0,77 per pill

Active Ingredient:Amantadine


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Using Symmetrel in Dogs: Benefits and Precautions

Dogs are vulnerable to various viral infections and diseases, just like humans. In certain cases, Symmetrel, an antiviral medication commonly used in humans, can be prescribed to treat specific conditions in dogs. It is essential to understand the potential benefits and precautions associated with using Symmetrel in dogs to ensure the well-being and safety of our furry companions.

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The Potential Benefits of Symmetrel for Dogs

Symmetrel, also known by its generic name amantadine, primarily functions as an antiviral and antiparkinsonian agent in humans. However, its therapeutic effects can extend to dogs in certain situations.

  • Symmetrel can be prescribed for dogs suffering from Canine Distemper Virus (CDV), a highly contagious and potentially fatal disease. It helps in reducing the severity and duration of symptoms associated with CDV, including respiratory problems, fever, and neurological issues.
  • In cases of chronic pain in dogs, Symmetrel can be used as an adjunct therapy to provide relief. It works by blocking specific neurotransmitters and reducing nerve-related pain, making it beneficial for dogs with osteoarthritis or undergoing post-surgical recovery.
  • If your dog experiences excessive itching or exhibits dermatologic issues due to allergies, Symmetrel may be prescribed. It helps in managing symptoms by reducing the inflammatory response and controlling itching caused by allergic reactions.

Precautions When Using Symmetrel in Dogs

While Symmetrel can be beneficial for dogs in certain situations, it is crucial to follow appropriate precautions to ensure their safety and minimize potential adverse effects. Here are some important considerations:

  1. Veterinary Prescription: Symmetrel should only be administered to dogs under the guidance of a licensed veterinarian. They will determine the appropriate dosage based on your dog’s specific condition, weight, and overall health.
  2. Potential Side Effects: Like any medication, Symmetrel can have side effects in dogs. It is important to monitor your dog closely after administration for any adverse reactions such as vomiting, diarrhea, loss of appetite, or changes in behavior. If any concerning symptoms occur, consult your veterinarian immediately.
  3. Avoid Use in Certain Conditions: Symmetrel is not suitable for dogs with a history of seizures or epilepsy, as it may lower the seizure threshold and increase the risk of convulsions.

It is important to note that before considering Symmetrel for your dog, a thorough veterinarian examination is essential to determine the appropriate treatment plan based on your dog’s specific condition and medical history. Always follow the veterinarian’s instructions precisely to ensure optimal results and minimize any potential risks.

The Nursing Process for Administering Symmetrel

Administering Symmetrel, a potent antiviral medication, requires a comprehensive understanding of the nursing process. As a nurse, it is crucial to follow guidelines for dosage, monitoring, and potential side effects to ensure optimal patient outcomes.


Before administering Symmetrel, it is essential to review the patient’s medical history, including any contraindications or underlying conditions that may affect dosage adjustments. The recommended dosage for Symmetrel in adults is as follows:

  • For the treatment of influenza A: 200 mg per day, taken as a single dose or divided into two doses of 100 mg each.
  • For the prevention of influenza A: 100 mg per day.

For pediatric patients, the dosage is based on their weight and should be determined by a healthcare provider. It is important to follow the prescribed dosage accurately to ensure optimal therapeutic effects.


Regular monitoring of patients receiving Symmetrel is crucial to assess the medication’s effectiveness and to identify any potential side effects or adverse reactions. The following parameters should be closely monitored:

  • Vital signs, including blood pressure, heart rate, and temperature.
  • Drug effectiveness by evaluating the improvement of symptoms and reduction in viral load.
  • Renal function by monitoring creatinine levels and urine output to assess any kidney-related side effects.

It is crucial to document and report any notable changes or concerns promptly.

Potential Side Effects

While Symmetrel can be highly effective, it is not without potential side effects. Nurses should educate patients about possible adverse reactions and monitor for their occurrence. Some common side effects of Symmetrel may include:

  • Nausea and vomiting
  • Dizziness or lightheadedness
  • Insomnia or disturbed sleep patterns
  • Anxiety or nervousness

If patients experience severe or persistent side effects, it is crucial to seek immediate medical attention.

Furthermore, Symmetrel may interact with other medications, including over-the-counter drugs and herbal supplements. It is essential to review the patient’s complete medication regimen and assess for potential drug interactions. Consult with a pharmacist or healthcare provider to ensure the safety and efficacy of concomitant medications.

In conclusion, administering Symmetrel requires a systematic approach, adhering to proper dosage protocols, monitoring parameters, and vigilant observation for potential side effects. By following the nursing process diligently, healthcare professionals can ensure the safe and effective use of Symmetrel in their patients.

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