Amifampridine User Reviews & Ratings

Brand names: Firdapse, Ruzurgi

Amifampridine has an average rating of 4.7 out of 10 from a total of 6 reviews on Drugs.com. 33% of reviewers reported a positive experience, while 50% reported a negative experience.

Condition	Avg. Rating	Reviews	Compare
Lambert-Eaton Myasthenic Syndrome	4.7	6 reviews for Lambert-Eaton Myasthenic Syndrome	2 medications

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Ann...
Taken for 6 months to 1 year
March 30, 2020

Firdapse (amifampridine) for Lambert-Eaton Myasthenic Syndrome "I took Firdapse for about 9 months, and I had so many side effects. I had a pain in my lower back that went from one hip to the other hip. When I got up in the morning, I could barely walk. It took until afternoon for it to go away, if it did then. I had pains in my thighs and upper arms. After I took the medication, it would take 2 hours for it to work, and then it would only last an hour. My previous medicine took 20 minutes for it to take effect and lasted for 4 hours. I would never recommend this medicine. There are other ones out there that are better. My insurance covered it while on it with help from a foundation, but when I stopped using it, they no longer covered it."

1 / 10

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Sue...
Taken for 5 to 10 years
March 30, 2020

Ruzurgi (amifampridine) for Lambert-Eaton Myasthenic Syndrome "I have been on Ruzurgi (which used to be called 3,4 DAP) since 2014, and it is a miracle drug. I could barely walk, and when I took this drug, I was walking nearly normal after 20 minutes. In 2018, Catalyst patented Firdapse, and we were forced to go on it in January 2019. I had so many side effects from Firdapse that I never had on Ruzurgi. Luckily for me, Ruzurgi got approved for children from ages 6-17, and my doctor can now prescribe it off-label. I was never so happy in my life to get back the Ruzurgi."

10 / 10

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Loi...
April 2, 2023

Firdapse (amifampridine) for Lambert-Eaton Myasthenic Syndrome "Much worse side effects than 3,4-diaminopyridine. In addition, it dramatically exacerbated a kidney problem. Plus it does not last the 4 hours 3,4-diaminopyridine and/or Ruzurgi lasted. The FDA did monumental damage to the LEMS patients, and the company that produced Firdapse should be sued and the FDA approval stripped."

1 / 10

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Frequently asked questions

Liz...
Taken for less than 1 month
August 8, 2019

Firdapse (amifampridine) for Lambert-Eaton Myasthenic Syndrome "Allergic. Definitely not the same as 3,4-DAP Ruzurgi (which I am not allergic to)."

1 / 10

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Sue...
Taken for 2 to 5 years
April 29, 2020

Ruzurgi (amifampridine) for Lambert-Eaton Myasthenic Syndrome "For me, this drug was like a miracle drug. I could barely walk, and after a short time after taking the medicine, I walked just about normal."

10 / 10

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3 Report

Liz...
September 30, 2019

For Lambert-Eaton Myasthenic Syndrome "Is Ruzurgi okay to use when pregnant?"

5 / 10

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