Note: This document contains side effect information about dalfampridine. Some dosage forms listed on this page may not apply to the brand name Ampyra.
Summary
Common side effects of Ampyra include: urinary tract infection. Other side effects include: balance impairment, insomnia, and nausea. Continue reading for a comprehensive list of adverse effects.
Applies to dalfampridine: oral tablet extended release.
Serious side effects of Ampyra
Along with its needed effects, dalfampridine (the active ingredient contained in Ampyra) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur while taking dalfampridine:
More common
- Bladder pain
- bloody or cloudy urine
- difficult, burning, or painful urination
- frequent urge to urinate
- lower back or side pain
Less common
- Blurred vision
- burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
- difficulty controlling your bladder or bowels
- feeling sad or depressed
- forgetful
- muscle cramps
- problems with swallowing
- slurred speech
- unusual tiredness or weakness
Incidence not known
- Chest tightness
- cough
- dizziness or lightheadedness
- fast heartbeat
- feeling of constant movement of self or surroundings
- hives, itching, skin rash
- puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
- sensation of spinning
- vomiting
Get emergency help immediately if any of the following symptoms of overdose occur while taking dalfampridine:
Symptoms of overdose
- Confusion
- increased sweating
- memory loss
- reduced awareness
- seizures
- weakness
Other side effects of Ampyra
Some side effects of dalfampridine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.
Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
More common
- Headache
- lack or loss of strength
- nausea
- problems with balance
- trouble sleeping
Less common
- Back pain
- constipation
- fever
- muscle aches
- sore throat
- stomach discomfort, upset, or pain
- stuffy or runny nose
For Healthcare Professionals
Applies to dalfampridine: oral tablet extended release.
Nervous system
Common (1% to 10%): Dizziness, headache, balance disorder, multiple sclerosis relapse, paresthesia, tremor
Uncommon (0.1% to 1%): Seizure, exacerbation of trigeminal neuralgia[Ref]
Gastrointestinal
Common (1% to 10%): Nausea, constipation, dyspepsia
Postmarketing reports: Vomiting[Ref]
Musculoskeletal
Common (1% to 10%): Back pain[Ref]
Respiratory
Common (1% to 10%): Nasopharyngitis, pharyngolaryngeal pain, dyspnea[Ref]
Genitourinary
Very common (10% or more): Urinary tract infection (12%)[Ref]
Hypersensitivity
Uncommon (0.1% to 1%): Anaphylaxis, angioedema, hypersensitivity[Ref]
Psychiatric
Common (1% to 10%): Insomnia, anxiety[Ref]
Other
Common (1% to 10%): Asthenia
Uncommon (0.1% to 1%): Chest discomfort[Ref]
Cardiovascular
Common (1% to 10%): Palpitations[Ref]
Dermatologic
Uncommon (0.1% to 1%): Rash, urticaria[Ref]
