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What is Dalfampridine (4-AP extended release)?

Dalfampridine, is an extended release formulation of 4-aminopyridine or 4-AP. It is a potassium channel blocker that is indicated as a treatment to improve walking in patients with multiple sclerosis (MS). Dalfampridine was previously called Fampridine-SR during clinical trials.

Reported Purpose & Efficacy

Reasons and Efficacy
Purpose # of patients
# of patients with evaluations Efficacy
Major
Moderate
Slight
None
Can’t tell
MS (Multiple Sclerosis) 594 130 Efficacy_major Efficacy_moderate Efficacy_slight Efficacy_none Efficacy_cant_tell
Improve mobility 227 117 Efficacy_major Efficacy_moderate Efficacy_slight Efficacy_none Efficacy_cant_tell
Walking problems 137 63 Efficacy_major Efficacy_moderate Efficacy_slight Efficacy_none Efficacy_cant_tell
Improve flexibility/strength 33 11 Efficacy_major Efficacy_moderate Efficacy_slight Efficacy_cant_tell
Fatigue 29 11 Efficacy_major Efficacy_moderate Efficacy_slight Efficacy_none Efficacy_cant_tell
Imbalance when walking 25 16 Efficacy_major Efficacy_moderate Efficacy_slight Efficacy_none Efficacy_cant_tell

See all 712 patients currently taking Dalfampridine (4-AP extended release)

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Reported Side Effects

Side effects as an overall problem

Severe
21
Moderate
32
Mild
73
None
166

Commonly reported side effects, conditions, and hospitalizations associated with Dalfampridine (4-AP extended release)

Insomnia 18
Dizziness 16
Nausea 8
Constipation 7
Headaches 7
Dizziness and feeling faint 6
See all 83 reported side effects See top 6 reported side effects

Reported Dosages

Frequently reported dosages based on patients currently taking Dalfampridine (4-AP extended release). See all 45 dosages

  1 mg daily 2 other daily 2 mg daily 5 mg daily 10 mg daily 15 mg daily 20 mg daily 30 mg daily 40 mg daily 60 mg daily
  11 Number of Patients: 11 16 Number of Patients: 16 24 Number of Patients: 24 10 Number of Patients: 10 169 Number of Patients: 169 14 Number of Patients: 14 376 Number of Patients: 376 26 Number of Patients: 26 17 Number of Patients: 17 7 Number of Patients: 7  

Reported Stop Reasons

Why Patients Stopped Taking Dalfampridine (4-AP extended release) (multiple reasons could be selected)
Reason # Patients Percentage of patients
Did not seem to work 104   Did not seem to work: 46%
Side effects too severe 61   Side effects too severe: 27%
Other 44   Other: 20%
Doctor's advice 30   Doctor's advice: 13%
Expense 25   Expense: 11%
Change in health plan coverage 9   Change in health plan coverage: 4%
Course of treatment ended 8   Course of treatment ended: 4%
Personal research 6   Personal research: 3%
Not indicated 5   Not indicated: 2%

See all 214 patients who’ve stopped taking Dalfampridine (4-AP extended release)

Currently Taking Dalfampridine (4-AP extended release)

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0-1 month 1-3 months 3-6 months 6 months-1year 1-2 years 2 years or more

Stopped Taking Dalfampridine (4-AP extended release)

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0-1 month 1-3 months 3-6 months 6 months-1year 1-2 years 2 years or more

Reported Adherence, Burden & Cost See details from patient evaluations

Adherence

Taking treatment as prescribed

Adherence of Dalfampridine (4-AP extended release)

Always
232 79%
Usually
42 14%
Sometimes
5 2%
Never
13 4%

Burden

Difficulty being on treatment

Burden of Dalfampridine (4-AP extended release)

Very
6 2%
Somewhat
14 5%
A little
39 13%
Not at all
233 80%

Cost

Paid out of pocket

Cost of Dalfampridine (4-AP extended release)

$200+
12 5%
$100-199
13 5%
$50-99
53 22%
$25-49
88 36%
< $25
77 32%

Report created on May 28, 2012.