Symmetrel (Amantadine Hydrochloride)
Lysovir® (Amantadine) is an antiviral drug that can help you fight influenza A virus infections. Lysovir’s proven efficacy not only aids in the prevention of flu symptoms, but it also plays an important part in the management of Parkinson’s disease symptoms, demonstrating its versatility in tackling serious health issues.
Why Choose Symmetrel (Amantadine)?
- Antiviral Action: Targets and inhibits the reproduction of the influenza A virus, lowering the severity and duration of flu symptoms.
- Symptom Management: Provides alleviation for Parkinson’s disease symptoms such as shakiness, stiffness, and mobility difficulties.
- Dual Functionality: It is unique in that it combats viral infections while also treating Parkinson’s disease symptoms.
How to Use Symmetrel (Amantadine)?
- Dosage: The proper dosage varies depending on treatment aims and individual health problems, therefore consult your healthcare professional.
- Administration: Can be taken with or without food, usually once or twice a day.
- Duration: To obtain the best possible results, follow your doctor’s directions for treatment duration.
Important Safety Information about Symmetrel
- Allergies: People who are allergic to amantadine hydrochloride or any component of Lysovir® should avoid taking this drug.
- Certain Medical Conditions: Patients with untreated glaucoma, significant renal impairment, or a history of certain psychiatric illnesses should see their doctor.
- Pregnancy and Breastfeeding: Let your doctor know if you are pregnant, plan to become pregnant, or are breastfeeding. The safety of Lysovir® in these circumstances has not been completely established.
- Medical History: Share your complete medical history with your doctor, particularly if you have renal illness, epilepsy, or other neurological issues.
Fact Table for Symmetrel (Amantadine)
| Category | Details |
| Generic Name | Amantadine |
| Brand Names | Lysovir, Symmetrel (among others) |
| Drug Class | Antiviral, Dopaminergic Antagonist, NMDA Receptor Antagonist |
| FDA Approval | Initially approved in 1966 |
| Indications | – Treatment and prevention of influenza A virus infections- Parkinson’s disease- Drug-induced extrapyramidal reactions |
| Dosage Forms | Capsule, Oral Solution, Tablet |
| Common Dosage | – Influenza A prevention and treatment: 100 mg twice daily- Parkinson’s disease: 100 mg twice daily, may be increased based on response and tolerance |
| Mechanism of Action | – Inhibits viral replication by interfering with the function of the viral M2 protein- Increases dopamine release and blocks dopamine reuptake in the central nervous system |
| Side Effects | – Nausea, dizziness, insomnia, Dry mouth, constipation, headache |
| Contraindications | – Known hypersensitivity to amantadine- End-stage renal disease without dose adjustment |
| Drug Interactions | – Increased CNS effects with alcohol, and other CNS depressants- Possible anticholinergic effects when combined with anticholinergic drugs |
| Pregnancy Category | C (Risk not ruled out) |
| Lactation | Not recommended |
| Renal Dosing | Adjustment required based on creatinine clearance |
| Storage | Store at room temperature, away from light and moisture |
| Legal Status | Prescription-only medication |
Common Side Effects of Lysovir
Like all medications, Lysovir (Amantadine) can cause side effects, although not everybody gets them. Understanding these side effects can help you use this medication safely and effectively.
- Nausea
- Dizziness
- Insomnia
- Dry mouth
- Constipation
- Headache
If you experience any of these side effects or others, make sure to discuss them with your healthcare provider. They can offer advice and may adjust your treatment if necessary. Report any severe or unexpected side effects immediately.
How Can You Buy Lysovir (Amantadine)?
You can order Lysovir (Amantadine) using these methods on our website:
- Order Online
- Order by Phone
- Order by Fax
- Order your refills
Visit our How to order page.
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Dr. Conor Sheehy, PharmD, BCPS is a practicing clinical pharmacist that works in primary care.
He supports other members of the healthcare team including physicians, mid-level providers, nurses, and other clinical staff.
He also likes to use his drug knowledge to inform his patients and the public about the benefits and risks they can expect from their medications.
His clinical specialties include: anticoagulation, diabetes management, and psychiatric care.
Please call 1-800-258-0477 or email us if you have any questions or concerns.
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