PlainPill

Amantadine

People mainly take Amantadine for focus, anxiety. Based on 8 first-hand reports and 147 meta-analyses & systematic reviews in the medical literature. Ranked #987 of 1,974 overall.

14
User score
Mostly negative
12% positive0% mixed25% negative62% unclear

Of reports that state an outcome, 32% are positive.

Clinical research
AStrong research base
147
meta-analyses
243
RCTs
4,631
papers

What Amantadine does, according to users

Of the people who reported each effect, the share who said it got better.

betterno changeworse

What the research says

Systematic reviews and meta-analyses from PubMed, with their published conclusions.

AStrong research base

3+ meta-analyses or systematic reviews and 10+ randomized controlled trials in humans. The grade measures how much human research exists — read the conclusions below for what it found.

Lancet · 2024 · Meta-analysis / systematic review
Antivirals for post-exposure prophylaxis of influenza: a systematic review and network meta-analysis

Conclusion: Post-exposure prophylaxis with zanamivir, oseltamivir, laninamivir, or baloxavir probably decreases the risk of symptomatic seasonal influenza in individuals at high risk for severe disease after exposure to seasonal influenza viruses. Post-exposure prophylaxis with zanamivir, oseltamivir, laninamivir, or baloxavir might reduce the risk of symptomatic zoonotic influenza after exposure to novel influenza A viruses associated with severe disease in infected humans.

PubMed 39181596 ↗
JAMA Intern Med · 2025 · Meta-analysis / systematic review
Antiviral Medications for Treatment of Nonsevere Influenza: A Systematic Review and Network Meta-Analysis

Conclusion: This systematic review and meta-analysis found that baloxavir probably reduced risk of hospital admission for high-risk patients and may reduce time to alleviation of symptoms, without increasing adverse events related to treatment in patients with nonsevere influenza. All other antiviral drugs either probably have little or no effect, or uncertain effects on patient-important outcomes.

PubMed 39804622 ↗
J Head Trauma Rehabil · 2021 · Meta-analysis / systematic review
Pharmacological Treatment of Agitation and/or Aggression in Patients With Traumatic Brain Injury: A Systematic Review of Reviews

Conclusion: On the basis of the results of this literature review, the authors recommend avoiding benzodiazepines and haloperidol for treating agitation and/or aggression in the context of TBI. Atypical antipsychotics (olanzapine in particular) can be considered as practical alternatives for the as-needed management of agitation and/or aggression in lieu of benzodiazepines and haloperidol. Amantadine, β-blockers (propranolol and pindolol), antiepileptics, and methylphenidate can be considered for scheduled treatment of agitation and/or aggression in patients with TBI.

PubMed 33656478 ↗

Dosage people report

As stated by users — not a recommendation. Follow the label or your doctor.

No doses stated in the reports so far.

Reported side effects

How often each side effect came up across all reports.

No side effects reported so far.

What users say

Verbatim quotes, shortened only — each links to the original discussion.

“added Cabergoline after feeling anxiety from Amantadine”
Source discussion ↗
“you could look into other NMDA receptor antagonists like Memantine or Amantadine”
Source discussion ↗
“amantadine (or it's less effective brother Memantine)”
Source discussion ↗
Top discussions (3)

Other options for focus

User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate