What is Amantadine?

Category: Prescription Drugs

Most popular types: Symmetrel PK Merz Mantidan Show all

false

See also: Amantadine-amitriptyline-baclofen-clonidine-lidocaine-nifedipine-prilocaine

Amantadine is used to treat Parkinson's Disease and "parkinson-like" symptoms such as stiffness and shaking that may be caused by the use of certain drugs. It is also an antiviral medication that may be used to treat and prevent certain strains of influenza A.

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
Parkinson's disease 946 590
Fatigue 582 308
Excessive daytime sleepiness (somnolence) 85 58
Jerky movements 43 27
Stiffness/spasticity 37 11
Tremor(s) 36 35

Show all 110 reasons taken


  • Major
  • Moderate
  • Slight
  • None
  • Can't tell

Side effects

Side effects as an overall problem

Side effects as an overall problem
Severity Evaluations
Severe 93
Moderate 127
Mild 191
None 571

Commonly reported side effects and conditions associated with Amantadine

Side effect Patients
Dry mouth 22
Constipation 16
Fatigue 16
Blurry vision 12
Blotchy skin on my legs 11
Nausea 11

Show all 194 reported side effects

Dosages

Based on patients currently taking Amantadine

Dosage Patients
100 mg twice daily 65
100 mg daily 61
200 mg daily 57
100 mg three times daily 30
300 mg daily 20
200 mg twice daily 9
400 mg daily 9
100 mg four times daily 3
1 tablet(s) daily 2
4 x 50 mg/5 mL daily 2

See all 27 dosages

Why patients stopped taking Amantadine

Multiple reasons could be selected

Reason Patients
Did not seem to work 280
Side effects too severe 179
Doctor's advice 132
Other 66
Course of treatment ended 21
Personal research 16
Expense 14
Change in health plan coverage 3
See all 566 patients who've stopped taking Amantadine

Duration

Currently taking Amantadine

Duration Patients
1 - 6 months 8
6 months - 1 year 17
1 - 2 years 28
2 - 5 years 61
5 - 10 years 106
10 years or more 62

Stopped taking Amantadine

Duration Patients
Less than 1 month 100
1 - 6 months 169
6 months - 1 year 89
1 - 2 years 65
2 - 5 years 94
5 - 10 years 40
10 years or more 11
Adherence
Adherence Evaluations
Always 749
Usually 133
Sometimes 35
Never taken as prescribed 65
Burden
Burden Evaluations
Very hard to take 29
Somewhat hard to take 49
A little hard to take 132
Not at all hard to take 772
Cost per month
Cost per month Evaluations
$200+ 10
$100-199 28
$50-99 24
$25-49 65
< $25 486
Not specified 369

What people switch to and from

Patients started taking Amantadine after stopping:

Treatment Patients
Carbidopa-Levodopa (Sinemet) 9
Pramipexole (Mirapex) 6
Ropinirole (Requip) 6
Rasagiline (Azilect) 4
Selegiline (Zelapar) 3

Show all 17 treatments patients report switching from

Patients stopped taking Amantadine and switched to:

Treatment Patients
Carbidopa-Levodopa (Sinemet) 17
Modafinil (Provigil) 8
Pramipexole (Mirapex) 6
Rasagiline (Azilect) 4
Ropinirole (Requip) 4

Show all 20 treatments patients report switching to

Last updated:

112 patient evaluations for Amantadine

Mar 26, 2018 (Started Dec 15, 2017)

  • Effectiveness
    Moderate (for Parkinson's disease)
  • Side effects
    Severe (dizziness)
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 100 mg Daily
Advice & Tips: The prescription reads twice a day, but it threw me way out of balance. I take it once a day and it works fine. No more dizzy spells.

  • 0 helpful marks

Oct 24, 2017 (Started Oct 15, 2017)

  • Effectiveness
    None (for fatigue)
  • Side effects
    Moderate (blurry vision)
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 100 mg Every other day
Cost: < $25 monthly

  • 0 helpful marks

May 15, 2017 (Started May 15, 2017)

  • Effectiveness
    Can't tell (for Parkinson's disease)
  • Side effects
    Severe
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 100 mg Twice daily
Advice & Tips: I had mis read the doctors instructions. I was supposed to start with one tablet every morning and after two weeks if there was no improvement go to one tablet in the morning and one tablet in the evening. I stsrted with one tblet in the morning and one in the evening. It was too much. In a week I am going to try again with the correct dosage
Cost: < $25 monthly

  • 1 helpful mark
Last updated:
Showing 3 of 112 patient evaluations for Amantadine