Amantadine is a medicine you might hear about for Parkinson’s symptoms and some viral infections. It’s been used for decades to ease stiffness, tremor, and slowed movement in Parkinson’s, and it used to treat influenza A. These days doctors mainly prescribe it for Parkinson’s-related movement problems and certain drug-induced movement disorders.
How does it work? Amantadine affects brain chemicals like dopamine and can reduce involuntary movements. That helps people move with less stiffness and fewer tremors. Effects can appear in a few days but you may need a couple of weeks to judge benefit. If you or someone you care for starts amantadine, watch for clearer movement and any side effects.
Common adult doses start low — often 100 mg once daily — and may increase to 100 mg twice daily. For older adults or people with kidney problems, doses are lower and spacing may be longer. Don’t stop amantadine suddenly; tapering is safer to avoid a sudden return of symptoms or withdrawal issues. Take it with food if it upsets your stomach, and keep a pill list so any doctor can review interactions.
What should you expect day to day? Many people notice mild benefit within days and clearer improvement over weeks. Side effects like dry mouth, dizziness, trouble sleeping, or blurry vision happen. If you feel confused, hallucinate, have swelling in your legs, or notice a big change in mood, call your doctor—those need prompt review.
Amantadine can build up in kidney disease, so doctors check kidney function and may lower the dose. It interacts with some other drugs that change dopamine or blood pressure. Combining with antihistamines or alcohol can increase drowsiness. Pregnant or breastfeeding? Talk to your prescriber — evidence is mixed and choices depend on risks and benefits.
Not working or can’t tolerate it? Other options for movement symptoms include levodopa, dopamine agonists, and deep brain stimulation for selected cases. For drug-induced involuntary movements, changing the offending medicine often helps. Never switch or stop drugs without medical advice.
Where to buy amantadine safely? Use a licensed pharmacy and keep your prescription. Online pharmacies can be legit, but verify licensing, reviews, and require a prescription. Beware sites offering prescription meds without asking for a doctor’s note — that’s often a red flag. If cost is an issue, ask about generic amantadine, patient assistance programs, or local discount programs.
If you want specifics about dosing, monitoring labs, or whether amantadine fits your situation, talk with a neurologist or your primary care doctor. Bring a list of other meds, kidney function info, and a clear story of your symptoms so they can guide you quickly.
Missed a dose? Take it when you remember unless the next dose is near—skip instead of doubling up. Store tablets at room temperature in a dry place. Doctors check kidney tests and ask about mood and sleep. If you get sudden confusion, fever, or trouble breathing, seek care promptly now.
In my latest blog post, I took a closer look at Amantadine, a medication commonly used to treat Parkinson's disease and certain viral infections. While it can be helpful for many patients, it's essential to be aware of its potential side effects and interactions. Some common side effects include dizziness, insomnia, and nausea, while more severe ones like hallucinations and seizures may occur in rare cases. It's also crucial to discuss any other medications you're currently taking with your doctor, as Amantadine may interact with them and cause unwanted consequences. Always consult a healthcare professional before starting or stopping any medication.
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