Prescription Required
Formulation: Tablet
(Brand Option)
Select the prescribed dosage
Select the quantity to see the price.
Prescription Required
Formulation: Tablet
(Generic Alternative)
Select the prescribed dosage
Select the quantity to see the price.
* This price includes a dispensing fee, medical review fee, and packing fee.
Shipped and delivered directly to your doorstep
Symmetrel contains the active ingredient amantadine hydrochloride. It is a prescription medication that has both antiviral and nervous-system effects. It may be used for certain influenza A infections, Parkinson’s disease, and drug-induced movement symptoms.
Symmetrel is indicated for the prevention and treatment of illness caused by influenza A virus.
When used for treatment, it works best when started early in the course of the infection.
It may help reduce symptoms of uncomplicated influenza A, but it is not effective against every type of influenza or other viral respiratory infections.
Symmetrel may also be used to help prevent influenza A in certain situations.
However, it is not a substitute for influenza vaccination.
Influenza viruses can also become resistant to amantadine, so healthcare providers consider current resistance patterns before deciding whether it is appropriate.
Symmetrel is also used to help manage symptoms of Parkinson’s disease and other forms of parkinsonism.
Parkinson’s disease affects movement and may cause symptoms such as:
Symmetrel may help improve some of these movement symptoms.
Symmetrel may also be used to treat drug-induced extrapyramidal symptoms, which are movement problems caused by certain medications, especially some antipsychotic medicines.
These symptoms may include:
Amantadine can help reduce some of these symptoms.
Amantadine has antiviral activity against influenza A.
It interferes with an early stage of the virus’s replication process, making it more difficult for susceptible influenza A viruses to multiply inside cells.
Because influenza viruses can develop resistance, the usefulness of amantadine for influenza depends on which virus strains are circulating.
The exact way amantadine improves Parkinson’s symptoms is not completely understood.
It is thought to increase or support dopamine activity in the brain and may also affect other chemical signaling systems involved in movement.
Dopamine is an important neurotransmitter that helps control smooth, coordinated movement.
Symmetrel does not cure Parkinson’s disease and does not permanently correct drug-induced movement disorders.
It helps control symptoms while the medication is being taken.
For influenza, Symmetrel is specifically associated with influenza A, not influenza B or other viral respiratory infections.
Symmetrel capsules are taken by mouth once or twice daily, depending on why you are taking the medication and the dose prescribed by your healthcare provider.
You may take Symmetrel with or without food.
Try to take each dose at about the same time every day.
If you take Symmetrel twice a day, space the doses evenly.
If the medication causes trouble sleeping, your healthcare provider may recommend taking the second dose earlier in the day rather than close to bedtime.
The dose of Symmetrel depends on:
For children, the dose may also be based on body weight.
Do not take more Symmetrel than prescribed.
If Symmetrel is prescribed for influenza A, start treatment as soon as your healthcare provider directs.
Take the medication for the full length of time prescribed, even if your symptoms begin to improve earlier.
Do not stop treatment early unless your healthcare provider tells you to.
When Symmetrel is used for Parkinson’s disease, improvement may not happen right away.
Some people may notice benefits within several days, while others may need longer.
Continue taking the medication as prescribed even if you do not notice an immediate change.
Do not suddenly stop taking Symmetrel without speaking with your healthcare provider.
Stopping it too quickly may cause Parkinson’s symptoms to become worse and may sometimes lead to serious withdrawal-related effects.
Your healthcare provider may gradually reduce your dose when treatment needs to be stopped.
Some people with Parkinson’s disease may notice that Symmetrel becomes less effective after several months of treatment.
If your symptoms begin to worsen or the medication does not seem to work as well as before, contact your healthcare provider.
Do not increase the dose on your own.
If you miss a dose of Symmetrel, take it as soon as you remember.
If it is almost time for your next scheduled dose, skip the missed dose and continue with your regular schedule.
Do not take two doses at the same time or take extra Symmetrel to make up for a missed dose.
Take Symmetrel exactly as prescribed.
Because amantadine is removed mainly through the kidneys, people with reduced kidney function may need a lower dose or a longer interval between doses.
Tell your healthcare provider if your symptoms change, you develop new side effects, or you have kidney problems.
Symmetrel (Amantadine) is available in the following forms and strength:
Symmetrel can cause dizziness, lightheadedness, blurred vision, or reduced coordination.
Until you know how the medication affects you, avoid driving, operating machinery, or doing other activities that require full alertness.
Alcohol and other medications that affect the central nervous system may make these effects worse.
Symmetrel may increase the risk of seizures in some people.
Tell your healthcare provider if you have a history of epilepsy or other seizure disorders before starting treatment.
Your healthcare provider may monitor you more closely if seizure risk is a concern.
Symmetrel can sometimes cause changes in thinking, mood, or behavior.
Possible symptoms may include:
Tell your healthcare provider if you have a history of psychiatric illness or if you notice new or worsening mood or behavior changes during treatment.
Amantadine is removed from the body mainly through the kidneys.
If kidney function is reduced, the medication can build up in the body and increase the risk of side effects.
People with kidney impairment may need a lower dose or a longer interval between doses.
Tell your healthcare provider if you have kidney disease before taking Symmetrel.
Tell your healthcare provider if you have liver disease.
Liver problems do not usually require the same type of dose adjustment as kidney impairment, but your healthcare provider may still consider your overall health and monitor you if needed.
Older adults may be more sensitive to Symmetrel because kidney function often decreases with age.
This can increase the risk of side effects such as:
A lower dose may be needed.
Symmetrel can cause dizziness or a drop in blood pressure when standing up.
This is called orthostatic hypotension.
Stand up slowly from a sitting or lying position, especially when treatment is first started or the dose is changed.
Tell your healthcare provider if you have a history of low blood pressure, high blood pressure, fainting, or other cardiovascular problems.
Symmetrel may cause or worsen swelling caused by fluid retention.
Tell your healthcare provider if you have:
Contact your healthcare provider if you develop worsening swelling, shortness of breath, or sudden weight gain.
Symmetrel can interact with other medications, especially drugs that affect the brain or nervous system.
Tell your healthcare provider about all:
Do not start or stop another medication without checking with your healthcare provider.
Symmetrel can cause side effects such as dry mouth and constipation.
Drink enough fluids unless your healthcare provider has told you to limit fluid intake.
Contact your healthcare provider if constipation becomes severe or persistent.
Amantadine can sometimes cause skin changes, including a mottled or purplish discoloration called livedo reticularis.
Tell your healthcare provider if you develop new or unusual skin changes.
If you have a history of eczema or other skin conditions, mention this before starting treatment.
Do not take Symmetrel if you are allergic to amantadine or any ingredient in the medication.
Seek immediate medical attention if you develop:
Tell your healthcare provider if you are pregnant, think you may be pregnant, or plan to become pregnant.
Symmetrel should only be used during pregnancy when the expected benefit outweighs the possible risk.
Your healthcare provider will decide whether it is appropriate for your condition.
Amantadine can pass into breast milk.
Tell your healthcare provider if you are breastfeeding or planning to breastfeed.
Your healthcare provider will weigh the benefits of treatment against the potential risks to the nursing infant.
Do not stop Symmetrel suddenly without speaking with your healthcare provider, especially if you are taking it for Parkinson’s disease.
Stopping too quickly may cause symptoms to worsen and can sometimes lead to serious withdrawal-related effects.
Your healthcare provider may gradually reduce the dose when treatment needs to be stopped.
Symmetrel is usually taken once or twice daily, depending on the condition being treated. The dose may be adjusted based on your age, kidney function, response to treatment, and other health conditions. Because amantadine is removed mainly through the kidneys, people with reduced kidney function often need a lower dose or a longer interval between doses.
No. Symmetrel should not usually be stopped suddenly, especially if you are taking it for Parkinson’s disease. Stopping too quickly may cause withdrawal symptoms or make your original symptoms worse. Your healthcare provider may gradually reduce your dose when treatment needs to be stopped.
Weight gain is not considered a common side effect of Symmetrel. However, some people may develop swelling or fluid retention, which can cause an increase in body weight. Contact your healthcare provider if you notice sudden weight gain, swelling in your legs or ankles, or shortness of breath.
How quickly Symmetrel works depends on why you are taking it. For Parkinson’s disease, some people may notice improvement within several days, while others may need longer. For influenza A, treatment is most effective when started early in the illness. Continue taking Symmetrel exactly as prescribed and allow enough time for it to work.
Symmetrel is not known for major food interactions and may generally be taken with or without food. However, it can interact with certain medications, especially those that affect the brain or nervous system. Tell your healthcare provider about all prescription medications, over-the-counter products, vitamins, supplements, and herbal products you use before starting Symmetrel.
| Generic name: | Amantadine |
|---|---|
| Formulation: | Capsule, Tablet |
| Strength(s): | 100mg |
| Quantities Available: | 100 |
Our online Canadian Pharmacy is known for high standards of quality, safety, and efficiency when it comes to medications.
Our pharmacy offers lower prices on prescription drugs compared to traditional pharmacies.
When ordering Symmetrel (amantadine) from a Canadian pharmacy, you can typically purchase up to a 90-day supply at one time, which is common for prescription medications to ensure adequate management of chronic conditions without frequent refills.
Here’s what you need to know:
Dosage and Quantity: Symmetrel is commonly prescribed in dosages of 100 mg, taken once or twice daily depending on the condition being treated. For a 90-day supply, if prescribed a maximum dosage of 400 mg per day, you would order up to 360 tablets (90 days x 4 tablets per day).
Yes, we sell amantadine on our website. You can enjoy low prices when you order through us. To purchase amantadine, you will need a valid prescription from your healthcare provider. We require this prescription to dispense the medication safely and appropriately. You have the option to submit your prescription by mailing it to us, faxing it, or uploading it through your online account.
Yes, we ship Symmetrel (amantadine) to both the United States and Puerto Rico.
Watch how Online Pharmacies Canada is helping customers save money on their medications.
Online Pharmacies Canada has provided information from third parties intended to increase awareness and does not contain all the information about Symmetrel (Amantadine). Talk to your doctor or other qualified medical practitioners for medical attention or advice, or if you have any concerns about Symmetrel (Amantadine).
REVIEWS