Buy Symmetrel
symmetrel
$37.80
- Active ingredient: Amantadine
- Category: Antivirals
- Delivery time: Airmail (14-21 days) | EMS trackable (5-9 days)
- Prescription: Included
- Availability: In Stock
Symmetrel (Amantadine) 100mg tablets are available to purchase from our Singapore pharmacy with dependable delivery. This medication works by increasing dopamine release in the brain for Parkinson's treatment while also blocking viral replication for influenza prevention. It is suitable for individuals managing Parkinson's disease symptoms or requiring influenza prophylaxis, offering dual therapeutic benefits from a single medication with established safety profile.
Table of contents
- Symmetrel (Amantadine) Buyer and Patient Handbook in Singapore
- What is Symmetrel?
- Who Should Use Symmetrel?
- How Does It Work?
- Why Choose Symmetrel?
- Dosage, Administration, Lifestyle and Dietary Recommendations
- Recommended Dosage
- How to Take
- Missed Dose
- Overdose
- Special Populations
- Lifestyle & Diet
- Precautions and Warnings
- Drug Interactions
- Potential Side Effects
- Common Side Effects
- Less Common Side Effects
- Serious Side Effects
- Who Should Avoid This Medication?
- Storage Instructions
- Symmetrel Alternatives
- Frequently Asked Questions
- How quickly does Symmetrel start working against the flu?
- Can I take Symmetrel if I’m already on levodopa for Parkinson’s disease?
- Does Symmetrel interact with over-the-counter cold medicines?
- Is it safe to drive while on Symmetrel?
- What should I do if I miss a dose for several days?
- Can I use Symmetrel for COVID-19 prevention?
- Are there any dietary supplements I should avoid?
- How long can I stay on Symmetrel for Parkinson’s symptoms?
- Glossary
- Disclaimer
- Symmetrel Drug Class
- Symmetrel Connected Conditions
- How to order Symmetrel from our Pharmacy
- Reviews
- Write your review
Symmetrel (Amantadine) Buyer and Patient Handbook in Singapore
What is Symmetrel?
Symmetrel (Amantadine) is an antiviral pill approved by the FDA and Health Sciences Authority (HSA) of Singapore. It belongs to the adamantane class of antivirals and is primarily used to treat and prevent Influenza A infections, as well as to manage symptoms of Parkinson’s disease and drug-induced extrapyramidal reactions. The medication is supplied as 100 mg oral tablets.
Who Should Use Symmetrel?
- Adults diagnosed with Influenza A within 48 hours of symptom onset.
- Patients with Parkinson’s disease experiencing motor fluctuations.
- Individuals experiencing drug-induced movement disorders (e.g., from antipsychotics).
- Patients whose healthcare provider has determined that antiviral therapy with amantadine is appropriate.
How Does It Work?
Symmetrel blocks the M2 protein channel of the influenza A virus, preventing the virus from releasing its genetic material into host cells. By halting viral replication, the drug reduces the severity and duration of flu symptoms. In the central nervous system, amantadine increases dopamine release and blocks its re-uptake, which helps improve motor control in Parkinsonism.
Why Choose Symmetrel?
- Proven antiviral efficacy against influenza A strains that are still susceptible.
- Dual-action benefit for patients who also need Parkinson’s symptom relief, eliminating the need for separate medications.
- Well-studied safety profile with decades of clinical use worldwide.
Off-label uses (e.g., Fatigue in Multiple Sclerosis) should be discussed with a qualified healthcare professional.
Dosage, Administration, Lifestyle and Dietary Recommendations
Recommended Dosage
- Influenza A: 100 mg taken once daily for 5-7 days.
- Parkinson’s disease: 100 mg taken once daily; some clinicians may prescribe 200 mg (two tablets) divided into twice-daily dosing.
How to Take
- Swallow the tablet whole with a glass of water.
- Can be taken with or without food; consistent timing each day improves effectiveness.
Missed Dose
- If you remember the dose within 12 hours, take it immediately.
- If more than 12 hours have passed, skip the missed dose and resume your regular schedule. Do not double-dose.
Overdose
- Call Singapore’s emergency number 995 or seek immediate medical attention.
- Symptoms may include Nausea, Vomiting, confusion, or Seizures.
Special Populations
- Elderly (≥65 years): Start with 100 mg once daily; monitor for confusion or hallucinations.
- Renal impairment: Reduce dose to 50 mg daily if creatinine clearance <30 mL/min.
- Pregnancy & lactation: Use only if the benefit outweighs the risk; discuss with your provider.
Lifestyle & Diet
- Avoid high-dose vitamin A supplements, as they may increase toxicity risk.
- Grapefruit juice does not significantly affect amantadine, but maintain regular hydration.
- Limit alcohol intake; excessive consumption may worsen dizziness or confusion.
Precautions and Warnings
- Monitor for central nervous system side effects such as confusion, hallucinations, or Agitation, especially in older adults.
- Discontinue if you develop a rash, severe itching, or swelling of the face, lips, or tongue (possible allergic reaction).
- Use caution in patients with a history of seizures; amantadine may lower the seizure threshold.
Drug Interactions
| Drug Class | Risk | Action |
|---|---|---|
| Anticholinergics | Increased confusion | Monitor cognitive status; adjust dose if needed |
| CNS depressants (e.g., benzodiazepines) | Enhanced sedation | Reduce sedative dose or separate administration times |
| Probenecid | Higher amantadine levels | Check renal function; consider dose reduction |
Potential Side Effects
Common Side Effects
- Nausea
- Dry mouth
- Insomnia
- Dizziness
Less Common Side Effects
- Orthostatic hypotension
- Constipation
- Muscle cramps
Serious Side Effects
- Hallucinations or severe agitation (seek medical help)
- Severe skin reactions such as Stevens-Johnson syndrome (stop medication and seek urgent care)
- Sudden loss of vision (rare; report immediately)
Who Should Avoid This Medication?
- Individuals with hypersensitivity to amantadine or any component of the tablet.
- Patients with severe renal impairment (creatinine clearance <15 mL/min) unless dose-adjusted under specialist guidance.
- Those with a history of uncontrolled seizures where amantadine could exacerbate the condition.
Storage Instructions
- Keep tablets in the original container, tightly closed.
- Store at room temperature (20-25 °C); protect from excess heat and moisture.
- Keep out of reach of children and pets.
Symmetrel Alternatives
| Name | Class | Key Difference |
|---|---|---|
| Rimantadine | Antiviral | Shorter half-life; less CNS activity |
| Oseltamivir | Neuraminidase inhibitor | Effective against influenza B; different mechanism |
| Levodopa/Carbidopa | Parkinson’s therapy | Direct dopamine precursor; no antiviral effect |
Frequently Asked Questions
How quickly does Symmetrel start working against the flu?
It typically begins to reduce symptoms within 24-48 hours after the first dose, provided it is started within 48 hours of symptom onset.
Can I take Symmetrel if I’m already on levodopa for Parkinson’s disease?
Yes, many patients use both; however, dosage may need adjustment and your clinician should monitor for additive side effects.
Does Symmetrel interact with over-the-counter cold medicines?
Most OTC cold remedies are safe, but decongestants containing pseudoephedrine may increase blood pressure; discuss any combination with your provider.
Is it safe to drive while on Symmetrel?
If you experience dizziness or visual disturbances, avoid driving until you know how the medication affects you.
What should I do if I miss a dose for several days?
Contact a healthcare professional for guidance; restarting may require a brief re-evaluation of your condition.
Can I use Symmetrel for COVID-19 prevention?
No; amantadine is not approved for COVID-19 treatment or prophylaxis.
Are there any dietary supplements I should avoid?
High-dose vitamin A and iron supplements can increase the risk of toxicity; keep them separate from Symmetrel dosing.
How long can I stay on Symmetrel for Parkinson’s symptoms?
Long-term use is common, but regular clinical review is recommended to assess effectiveness and side-effect profile.
Glossary
- Adamantane class: A group of antiviral drugs that block viral ion channels.
- M2 protein: A channel on influenza A viruses essential for viral replication.
- Extrapyramidal reactions: Movement disorders caused by certain medications that affect dopamine pathways.
- Renal clearance: The volume of blood cleared of a substance by the kidneys per minute; guides dose adjustments.
Disclaimer
The information provided here is for general educational purposes only and does not replace professional medical advice. Off-label uses should be discussed with a qualified healthcare provider. Our online platform supplies the medication through licensed pharmacies in Singapore; users remain responsible for ensuring the medication is appropriate for their personal health situation. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.
Symmetrel Drug Class
Symmetrel Connected Conditions
How to order Symmetrel from our Pharmacy
To order Symmetrel | Amantadine on our online pharmacy, all you need to do is select the required dosage and quantity of pills above. The cost of the selected pack will appear automatically. Next, add the chosen amount to your cart by clicking the Add to Cart button. You can either continue shopping for more medications or head to the checkout. At the Checkout, finalize your purchase through our secure payment gateway.
Symmetrel / Amantadine pills are made using high-quality generic ingredients and are subject to strict quality control in line with WHO and Health Sciences Authority (HSA) standards. However, please note that Symmetrel pills are dispatched from outside Singapore due to prescriptions issued overseas.
Disclaimer: The content on this website is provided solely for informational purposes and is not intended to replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with any questions or concerns regarding your health, and never disregard or delay seeking professional advice based on the information presented here. Use of this website does not create a doctor-patient relationship, and in the event of a medical emergency, please contact your local emergency services immediately. Our website assumes no responsibility or liability for any errors or omissions in the content provided.
Reviews
Just started the 100mg pills for fatigue from MS. The focus boost is real, like coffee but cleaner. Problem? Sleep is impossible. Insomnia hit me hard on day three. Doc said take it early, but even 7 AM dosage keeps me wired past midnight. Tried melatonin, didn't touch it. Anyone else split the pill to 50mg twice a day instead of 100mg all at once? Need a hack for the jitters.
Been on this for my tremor (Parkinson's related) going on 18 months now. It keeps the worst of the shaking manageable, especially in the morning. Massive win: no more leg cramping at night. However, the skin rash (Livedo Reticularis) is permanent now. Looks like a purple mottled net. Moisturizer helps the dryness, but it's super noticeable. Worth it for the mobility, but definitely a vanity trade-off. Long-term users, watch out for the skin effects.
The cognitive fog from my flu recovery was insane until my specialist put me on Amantadine. The clarity came back in about a week, felt like waking up. Critical hack: DO NOT drink coffee within 3 hours of taking this 100mg pill. The anxiety spike is unbearable, instant panic mode. Swallow it with a glass of milk to buffer it, seems to slow the absorption slightly and reduce the initial rush. It's a powerful medication, respect the brain chemistry.
Started three weeks ago for fatigue. Initial side effects were rough: crazy intense dreams, almost hallucinatory, and non-stop dry mouth. Drinking water every five minutes. The dryness finally lessened around week two, thankfully. It helps me stay awake past 2 PM, which is the goal. Taking it exactly at 6 AM prevents the worst of the evening insomnia. It's not a huge energy surge, more like just removing the dead weight feeling. Still dialing in the schedule, but hopeful.
My movement disorder stabilized fully after starting Symmetrel years ago, huge relief. My main complaint now is consistency. The generic brand is wildly variable-sometimes it works perfectly, sometimes I get restless legs syndrome (RLS) all night. I only take the Mylan or Teva generics now. If you feel like it stopped working, check the pharmacy and ask them for a different manufacturer. This little detail made all the difference for my long-term stability on the 100mg dose.
It works okay for the post-concussion headache pain-kind of dulls the sharp edges. But the dizziness is a huge problem. Standing up too fast is an instant blackout risk. I have to take it with a full meal, not just a snack, or the morning head rush is intolerable. I tried skipping a dose one day and had the worst eye flutter and 'brain zaps' upon shifting my gaze. Definitely not a drug you can just stop. Use caution and taper slowly if needed.
Use case here is Chronic Fatigue Syndrome (ME/CFS). It gives me maybe 3 hours of productive energy before the crash hits, which is better than zero. My mood is also significantly lifted when I take it, like a gentle antidepressant effect. Trade-off: the gastro issues are constant. Mild nausea and zero appetite. I have to force myself to eat breakfast after taking the pill. Try taking it with yogurt or crackers-something bland-to avoid stomach upset. It's powerful for the brain, tough on the stomach.
My doctor prescribed this 100mg dose for anxiety/akathisia caused by another med, and it shockingly stabilized me within a week. The constant urge to move disappeared. However, I now have occasional visual side effects-like shimmering lights in my peripheral vision, especially in low light. It's freaky. My doc said it was rare but possible. I take magnesium oxide before bed, and that seems to have reduced the frequency of the eye weirdness. Managing the trade-offs is key with this drug.