Prescribing Information Medication Guide Healthcare Professional Site Sign Up

Sign Up

PATIENT STORIES

Meet people living with Lambert-Eaton myasthenic syndrome (LEMS) who have found success on FIRDAPSE^®*

*Individual results may vary.

Wade

WADE

Before his illness, Wade never gave walking up a flight of stairs a second thought.

His job working as a high-level supervisor for highway paving operations had always required strength and grit, something he had never been short on. And he’d always been up for physical adventures: scuba diving, boating, and deep-sea fishing.

That all changed when Wade came home from work one day with strange symptoms. “I had pain in both of my hips,” he says. Over the next few weeks, the changes were drastic and alarming. “My legs got weaker and weaker until I couldn’t get up from the couch and walk. I couldn’t move my jaw, so I couldn’t chew well enough to make it through a meal.” Eventually, he was diagnosed with LEMS.

These days, Wade follows a regimen prescribed by his physician to take FIRDAPSE. As he reflects on his journey, he counts his blessings more than his burdens. He talks about the small successes, like a recent trip where he was able to walk, unaided, through a crowded amusement park on his own two feet.

Jerry

JERRY

Jerry prided himself on maintaining an active lifestyle, but he suddenly struggled through taxing loss of mobility and an inability to recover after a knee replacement surgery. He began daily physical therapy, but he felt like he wasn’t making progress as quickly as he’d hoped. Weeks went by, and he was still using the walker.

With the help of his wife Phyllis, he searched for answers and spent the next several months speaking to neurologists and other specialists. Finally, after enduring a number of tests, including an electrodiagnostic test to evaluate the neuromuscular junction, Jerry was diagnosed with LEMS.

After taking FIRDAPSE, Jerry felt comfortable on his feet, unassisted, for the first time in months. Jerry and Phyllis have shared many adventures together, but express appreciation for slowing down and enjoying their family. They now find enjoyment in taking relaxing island cruises and visiting their two fully grown children and two grandchildren.

What is FIRDAPSE?

FIRDAPSE is a prescription medicine used to treat adults 18 years of age or older with Lambert-Eaton myasthenic syndrome (LEMS). It is not known if FIRDAPSE is safe or effective in children.

IMPORTANT SAFETY INFORMATION

What is the most important information I should know about FIRDAPSE?

FIRDAPSE can cause seizures.
- You could have a seizure even if you never had a seizure before.
- Do not take FIRDAPSE if you have ever had a seizure.

Stop taking FIRDAPSE and call your doctor right away if you have a seizure while taking FIRDAPSE.

Do not take FIRDAPSE if you:

have ever had a seizure
are allergic to amifampridine phosphate, or another aminopyridine.

Before you take FIRDAPSE, tell your doctor about all of your medical conditions, including if you:

are taking another aminopyridine, such as compounded 3,4-diaminopyridine (3,4-DAP)
have had a seizure
have kidney problems
have liver problems
are pregnant or plan to become pregnant. It is not known if FIRDAPSE will harm your unborn baby. You and your doctor will decide if you should take FIRDAPSE while you are pregnant.
are breastfeeding or plan to breastfeed. It is not known if FIRDAPSE passes into your breast milk. Talk to your doctor about the best way to feed your baby while taking FIRDAPSE.

Tell your doctor about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

How should I take FIRDAPSE?

Take FIRDAPSE exactly as your doctor tells you to take it. Do not change your dose of FIRDAPSE.
Do not take more than 2 tablets of FIRDAPSE at one time or more than 8 tablets of FIRDAPSE in a 24-hour period.
FIRDAPSE can be taken with or without food.
If you miss a dose of FIRDAPSE, skip that dose and take your next dose at your next scheduled dose time. Do not double your dose to make up the missed dose.
Do not take FIRDAPSE together with other medicines known to increase the risk of seizures.
If you take too much FIRDAPSE, call your doctor or go to the nearest hospital emergency room right away.

What are the possible side effects of FIRDAPSE?

FIRDAPSE may cause serious side effects, including:

Seizures. See "What is the most important information I should know about FIRDAPSE?"
Serious allergic reactions, such as anaphylaxis. FIRDAPSE can cause serious allergic reactions. Stop taking FIRDAPSE and call your doctor right away or get emergency medical help if you have:
- shortness of breath or trouble breathing
- swelling of your throat or tongue
- hives
The most common side effects of FIRDAPSE include:
- tingling around the mouth, tongue, face, fingers, toes, and other body parts
- upper respiratory infection
- stomach pain
- nausea
- diarrhea
- headache
- increased liver enzymes
- back pain
- high blood pressure
- muscle spasms

Tell your doctor if you have any side effect that bothers you or that does not go away.

These are not all the possible side effects of FIRDAPSE.

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

How should I store FIRDAPSE?

Store FIRDAPSE at 68ºF to 77ºF (20ºC to 25ºC).
Safely throw away FIRDAPSE that is out of date or no longer needed.

Keep FIRDAPSE and all medicines out of the reach of children.

If you would like more information, talk to your doctor or pharmacist. You can ask your pharmacist or doctor for additional information about FIRDAPSE that is written for health professionals.

The active ingredient in FIRDAPSE is amifampridine. Inactive ingredients are calcium stearate, colloidal silicon dioxide, and microcrystalline cellulose.

Please see full Prescribing Information for additional Important Safety Information.

What is FIRDAPSE?

FIRDAPSE is a prescription medicine used to treat adults 18 years of age or older with Lambert-Eaton myasthenic syndrome (LEMS). It is not known if FIRDAPSE is safe or effective in children.

IMPORTANT SAFETY INFORMATION

What is the most important information I should know about FIRDAPSE?

FIRDAPSE can cause seizures.
- You could have a seizure even if you never had a seizure before.
- Do not take FIRDAPSE if you have ever had a seizure.

Stop taking FIRDAPSE and call your doctor right away if you have a seizure while taking FIRDAPSE.

Do not take FIRDAPSE if you:

have ever had a seizure
are allergic to amifampridine phosphate, or another aminopyridine.

Before you take FIRDAPSE, tell your doctor about all of your medical conditions, including if you:

are taking another aminopyridine, such as compounded 3,4-diaminopyridine (3,4-DAP)
have had a seizure
have kidney problems
have liver problems
are pregnant or plan to become pregnant. It is not known if FIRDAPSE will harm your unborn baby. You and your doctor will decide if you should take FIRDAPSE while you are pregnant.
are breastfeeding or plan to breastfeed. It is not known if FIRDAPSE passes into your breast milk. Talk to your doctor about the best way to feed your baby while taking FIRDAPSE.

Tell your doctor about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

How should I take FIRDAPSE?

Take FIRDAPSE exactly as your doctor tells you to take it. Do not change your dose of FIRDAPSE.
Do not take more than 2 tablets of FIRDAPSE at one time or more than 8 tablets of FIRDAPSE in a 24-hour period.
FIRDAPSE can be taken with or without food.
If you miss a dose of FIRDAPSE, skip that dose and take your next dose at your next scheduled dose time. Do not double your dose to make up the missed dose.
Do not take FIRDAPSE together with other medicines known to increase the risk of seizures.
If you take too much FIRDAPSE, call your doctor or go to the nearest hospital emergency room right away.

What are the possible side effects of FIRDAPSE?

FIRDAPSE may cause serious side effects, including:

Seizures. See "What is the most important information I should know about FIRDAPSE?"
Serious allergic reactions, such as anaphylaxis. FIRDAPSE can cause serious allergic reactions. Stop taking FIRDAPSE and call your doctor right away or get emergency medical help if you have:
- shortness of breath or trouble breathing
- swelling of your throat or tongue
- hives
The most common side effects of FIRDAPSE include:
- tingling around the mouth, tongue, face, fingers, toes, and other body parts
- upper respiratory infection
- stomach pain
- nausea
- diarrhea
- headache
- increased liver enzymes
- back pain
- high blood pressure
- muscle spasms

Tell your doctor if you have any side effect that bothers you or that does not go away.

These are not all the possible side effects of FIRDAPSE.

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

How should I store FIRDAPSE?

Store FIRDAPSE at 68ºF to 77ºF (20ºC to 25ºC).
Safely throw away FIRDAPSE that is out of date or no longer needed.

Keep FIRDAPSE and all medicines out of the reach of children.

If you would like more information, talk to your doctor or pharmacist. You can ask your pharmacist or doctor for additional information about FIRDAPSE that is written for health professionals.

The active ingredient in FIRDAPSE is amifampridine. Inactive ingredients are calcium stearate, colloidal silicon dioxide, and microcrystalline cellulose.

Please see full Prescribing Information for additional Important Safety Information.