Dalfampridine ER Tablets, Generic Version of Ampyra, Now Available in US, Mylan Announces

Dalfampridine ER Tablets, Generic Version of Ampyra, Now Available in US, Mylan Announces

Mylan announced its U.S. launch of dalfampridine extended-release (ER) tablets, the authorized generic version of Acorda‘s Ampyra, that work to improve walking abilities in adults with multiple sclerosis (MS). Both versions of this medication come in a 10 mg tablet form.

Approved generic medicines are those that have been proven to be “bioequivalent” to their brand-name counterparts in terms of strength, dosage, quality, safety, and efficacy. Generics have the same active ingredients as brand-name medicines, and work in the same way. A major advantage is their cost-effectiveness: they are less expensive because their makers don’t face the same development costs as manufacturers of brand-name drugs.

Dalfampridine was approved in 2010 by the U.S. Food and Drug Administration (FDA) to improve walking abilities in patients with MS.

Data from clinical trials, including longer-term data, has shown that dalfampridine can significantly improve walking speed and distance, as well as gait and balance.

In particular, results of the Phase 3 clinical trial (NCT01328379) reported that the use of dalfampridine 10 mg “was associated with statistically significant and clinically meaningful improvements in walking relative to placebo” and that “the 10-mg BID [twice a day] dose is effective for improving walking speed, as observed on short timed-walk tests, and for increasing distance walked over longer timed-walk periods,” researchers wrote in a study reporting the findings.

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Both Ampyra and Mylan’s generic formulation block potassium channels on the surface of nerve fibers; this is thought to improve the conduction of signals along nerve fibers whose insulating myelin coating has been damaged by MS.

Side effects of the drug include shortness of breath or trouble breathing, swelling of throat or tongue, or hives.

The medication can cause seizures and should not be taken by people who have ever had a seizure, have certain types of kidney problems, or are allergic to dalfampridine, the active ingredient in Ampyra extended-release tablets and the dalfampridine ER tablets.

“The launch of Dalfampridine Extended-Release Tablets is yet another example of Mylan’s continued commitment to providing access for patients living with multiple sclerosis, and adds to our portfolio of products indicated for the disease or its related conditions,” Heather Breschs, Mylan CEO, said in a press release.

Dalfampridine generic launch in the U.S. was possible after the Court of Appeals for the Federal Circuit in September supported the decision of the U.S. District Court for the District of Delaware to invalidate four Ampyra patents held by Acorda.


  1. Stephen Harris says:

    I used to take a compounded medication called 4-AP, intended to help with walking and gait. It was cheap and generic, and I had to order it from a small specialty compounding pharmacy. I had to pay for it myself, but the cost was minimal. Then along came Ampyra. It
    was the same thing but easier to obtain and more consistent. And vastly more expensive. And it replaced 4-AP. And now we’re sort of back to square one, with a generic version of Ampyra, which is what the original formulation known as 4-AP was. Generic or not, I will bet that delfampridine costs more than 4-AP did.

    • Leslie Willis says:

      I was on Ampyra a month after it was approved. Last January I went off it because of my insurance. A few months later, I went on 4-AP. It cost me $60.00 a month and did not help as much as Ampyra. A couple of months ago I received a letter from Ampyra saying that I might be able to go on Ampyra again. I found out I could, but where it used to cost $40.00 a month, it now was $60.00. I went back on, but I don’t see as much a benefit as I saw before. I’m hoping that it will start helping me more pretty soon.

      • mary varady says:

        Which compound pharmacy did you use for 4-AP? I’m interested because I can no longer afford my Ampyra but experienced several benefits. Thank you so much for sharing this info!

    • Mary says:

      Would you please share the name of the compounding pharmacy you used to get your 4-AP? I’m very interested in trying this since I can no longer afford Ampyra. Thank you!

  2. I have had ms for 23 years and am a walking poster child for faith and exercising and eating,

    Went off all dugs years ago while planning to change to sim thing else,. But piickrd you thhe book when the brain changes itself and it reworked my brain. Still can’t run but feel pretty good and blessed but time to get back on something.

    Need recommendations

    • Khushnoor says:

      There are so many new oral medications available now, hopefully your neurologist is the best person to advise you on what will work best for you. I’m keen to know which book you are talking about. I would like to read it. Please send me the name and author.
      I would also like to recommend you read ::::The Mind Body Prescription by John Sarno.
      Very interesting book!

      Good luck with everything!

  3. Eve C says:

    Was taking ampyra and getting payment assistance through drug company,at that time the drug was working well. Went on medicare lost my assistance now have to pay 946.00 can’t afford, looking forward to generic.

  4. John Pierce says:

    In our system where profits are the main product, and health care is only a by-product, they can charage anything they want.

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