Without a Prescription

Symmetrel is a drug also generically known under the name of Amantadine. Symmetrel is an antiviral medicine. Symmetrel's actions block the harmful effects that some viruses do to the patient's body.
Symmetrel is a drug that has commonly been prescribed in order to prevent and also to treat influenza A (a dangerous viral infection). Symmetrel might not be efficient against certain flu strains, therefore it is not recommended to take Symmetrel during all the flu seasons. Ask your doctor for further information regarding when it is advisable to take Amantadine. Symmetrel can also be given to patients suffering from Parkinson's disease or to patients who show "Parkinson-like" symptoms (for example shaking and stiffness that may be the result of a treatment with other drugs).
Symmetrel (Amantadine) is a drug commonly prescribed against various viral infections (such as influenza A) or to patients suffering from Parkinsons. Symmetrel can also serve other purposes besides the one that have been listed here.


You must not take Symmetrel if you are allergic to Symmetrel or to any of its ingredients.
Before you start taking Symmetrel, inform your physician if you have allergic reactions to any other drugs, or if you are suffering from:
- Congestive heart failure;
- Epilepsy or another seizure disorder;
- Glaucoma;
- Kidney disease;
- Liver disease;
- Mental illness;

If you are experiencing any of the disorders listed here, you may not be allowed to take Symmetrel, or you might need dosage adjustments.
Symmetrel is a category C FDA pregnancy drug. Therefore, it is not clear whether Symmetrel could harm an unborn child if taken during pregnancy. You should not start taking Symmetrel without your physician's approval, especially if you are pregnant. Symmetrel can and does pass into breastmilk. Ask for your doctor's consent before you start taking Symmetrel if you are breastfeeding an infant.
During your treatment with Symmetrel, you ought to be careful while driving or performing any other hazardous action that requires mental and even physical activity. If you take Symmetrel to treat influenza A, you should not stop your treatment without your doctor's consent, even if you start to feel better after a few days of treatment. This rule also applies if you take the drug to treat some of Parkinson's symptoms. If you do not obey the doctor's orders, your medical condition could become worse.

Intake Guidelines

You must take Symmetrel just like your doctor told you to. Do not change the dose that he or she has prescribed you. You can also rely on the set of instructions written on the drug's label. You ought to accompany Symmetrel with a glass of water. In order to measure the correct dose of Symmetrel you should use a dose measuring device (such as a dose measuring cup or spoon). If you do not own such a device, you should buy one from your local pharmacy.
Symmetrel ought to be stored at an average room temperature. Keep Symmetrel away from the reach of children and from heat and moisture.


Ask your doctor to tell you the correct dose of Symmetrel that you should take in, in order to get the best results. Do not change this dose without your physician's consent. Avoid taking double doses of Symmetrel, as it may lead to overdose. Symmetrel dosage can vary from one patient to another, depending on the condition that the drug is supposed to treat, the patient's general health state, etc.


If you suspect that you are suffering from an overdose with Symmetrel you are probably in need of immediate medial care. Contact your local poison control center and alert your doctor at once. Among Symmetrel Overdose symptoms are: blurred vision, anxiety, severe headache, confusion, aggression, hallucinations, tremor, uneven or fast heart rate, seizure, trouble breathing, or coma. Symmetrel overdose can be lethal.

Missed Dose

Take Symmetrel on a regular basis in order to get the best results. If you miss a dose, take it as soon as possible. If it is almost time for another dose, skip the one that you have missed and continue your treatment. Do not take double doses of Symmetrel without your doctor's consent.

Side Effects

Among Symmetrel's severe side effects are:
- Breath shortness, sometimes with mild exertion;
- Changes in your behavior;
- Fainting, feeling light-headed;
- Feeling agitated, depressed, or aggressive;
- Fever, confusion, stiff muscles, uneven or fast heartbeat, sweating;
- Rapid weight gain, swelling;
- Restless eye, tongue, neck or jaw muscle movements, sometimes tremor;

Other less severe side effects are:
- Dizziness, headache, drowsiness;
- Dry nose, dry mouth;
- Loss of coordination or balance;
- Nausea, loss of appetite, constipation;
- Sleep problems;

Other side effects that have not been listed here could occur. Inform you doctor if you feel anything bothersome during your treatment with Symmetrel.


Some drugs available in pharmacies can interact with Symmetrel, in harmful ways. Therefore, you should ask for your doctor's consent before you start taking any other drugs, even if they are simple cold or cough medicines, minerals, vitamins, herbal products etc. You might not be allowed to continue taking Symmetrel or you might need dosage adjustments.

Other Brand Names

In some countries Symmetrel may also be known as:
- Actison;
- Amant;
- Amanta;
- Amantadine;
- Amantagamma;
- Amantan;
- Amixx;
- Ampakine;
- Atarin;
- Endantadine;
- Hofcomant;
- InfectoFlu;
- Lysovir;
- Mantadix;
- Mantandan;
- Mantidan;
- Parkadina;
- PK-Merz;
- Prayanol;
- Profil;
- Viregyt-K;
- Virofral;
- Virosol;
Without Prescription (2017)