Ampyra contains the active ingredient dalfampridine. It is a prescription extended-release medication used to improve walking in adults with multiple sclerosis, also known as MS.
Clinical studies showed that some patients taking Ampyra were able to walk faster. However, not everyone responds to treatment.
Understanding Multiple Sclerosis
Multiple sclerosis is a long-term condition that affects the brain, spinal cord, and optic nerves.
Healthy nerves are protected by a fatty covering called myelin. Myelin helps electrical signals move quickly and efficiently between the brain and the rest of the body.
In people with MS, the immune system damages myelin and the nerve fibers beneath it. This damage may slow, weaken, or interrupt nerve signals.
Walking Problems in Multiple Sclerosis
Difficulty walking is a common problem for people with MS.
Walking may be affected by:
- Muscle weakness
- Muscle stiffness or spasms
- Poor balance
- Numbness or tingling
- Reduced coordination
- Tiredness
- Difficulty lifting the feet
- Changes in nerve signaling
These problems may make it harder to walk quickly, climb stairs, maintain balance, or complete everyday activities.
How Ampyra Works
Ampyra belongs to a class of medications called potassium channel blockers.
When myelin is damaged, potassium may escape through channels in the nerve fibers. This can interfere with the electrical signals travelling along the nerves.
Dalfampridine blocks some of these potassium channels. This may help electrical signals travel more effectively through damaged nerves.
Improved nerve signaling may help the muscles involved in walking work more efficiently.
Improvements in Walking Speed
Ampyra is specifically approved to help improve walking speed in adults with MS.
Some people who respond to treatment may notice that they can:
- Walk faster
- Complete short walking tasks more easily
- Move around the home or workplace more efficiently
- Keep up better during daily activities
- Feel more confident while walking
The amount of improvement varies. Ampyra does not guarantee that walking will return to normal.
Effects on Other MS Symptoms
Ampyra is approved to improve walking. It is not specifically approved to treat every symptom of MS.
It may not directly improve:
- Vision problems
- Memory or concentration
- Bladder symptoms
- Pain
- Numbness
- Tiredness
- MS relapses
A healthcare provider may prescribe other treatments for these symptoms.
Symptom Management
Ampyra is considered a symptomatic treatment.
This means it may improve a specific problem caused by MS, such as reduced walking speed. It does not treat the underlying immune-system activity that causes MS.
Ampyra may be used alongside disease-modifying MS medications when appropriate.
Difference From Disease-Modifying Treatment
Disease-modifying therapies are used to reduce MS disease activity, lower the number of relapses, and help slow the development of new damage.
Ampyra does not replace these treatments. It has not been shown to prevent relapses or stop MS from progressing.
Continue taking your disease-modifying medication unless your healthcare provider tells you to change it.
Measuring the Response to Treatment
A healthcare provider may assess your walking before and after starting Ampyra.
This may include checking:
- Walking speed
- Walking distance
- Balance
- Use of mobility aids
- Ability to complete daily activities
- Falls or near-falls
- Your own perception of improvement
A timed walking test may be used to determine whether treatment is helping.
Not Everyone Responds
Some patients experience a meaningful improvement in walking, while others notice little or no benefit.
Your healthcare provider may continue treatment only if Ampyra provides a useful improvement in your mobility or daily function.
Do not take extra medication if you do not notice an immediate benefit. Higher doses increase the risk of seizures and do not provide greater walking improvement.
Extended-Release Formulation
Ampyra is supplied as an extended-release tablet.
The tablet releases dalfampridine gradually over several hours. This helps maintain more consistent medication levels in the body.
The extended-release tablet must be swallowed whole. Crushing, chewing, splitting, or dissolving it may release too much medication at once and increase the risk of serious side effects.
Kidney Function and Treatment Safety
The kidneys remove dalfampridine from the body.
If kidney function is reduced, the medication may build up in the bloodstream. Higher medication levels can increase the risk of seizures.
Ampyra must not be used in people with moderate or severe kidney impairment. Kidney function should be checked before treatment and monitored when appropriate.
Seizure Risk
Ampyra can cause seizures, even in some people who have never had one before.
The risk increases when medication levels become too high. Ampyra should not be used by anyone with a history of seizures.
Stop taking Ampyra and seek immediate medical care if a seizure occurs. Treatment should not be restarted unless a specialist provides different instructions.
Role in a Mobility Plan
Ampyra may be one part of a broader plan to improve mobility.
Other parts of the plan may include:
- Physical therapy
- Strength and balance exercises
- Stretching
- Treatment for muscle stiffness or spasms
- Occupational therapy
- Canes, walkers, braces, or other mobility aids
- Measures to reduce the risk of falls
Medication may work best when combined with rehabilitation and practical mobility support.
Individualized Treatment
A healthcare provider will decide whether Ampyra is appropriate based on:
- Age
- Walking ability
- Kidney function
- History of seizures
- Other medical conditions
- Current medications
- Fall risk
- Expected benefits and risks
Use Ampyra exactly as prescribed. Do not increase the dose, take doses too close together, or combine it with another dalfampridine or 4-aminopyridine product.
Role in Long-Term MS Care
Ampyra may help improve walking, but it does not cure multiple sclerosis.
Continue attending regular appointments so your healthcare provider can assess your mobility, kidney function, side effects, and overall MS treatment plan.
Contact your healthcare provider if your walking becomes worse, you experience frequent falls, or you do not notice a meaningful benefit from treatment.
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