Amifampridine

  • Part D specialty tier in 93% of formularies (2026Q3)
  • Firdapse

Therapy management checklist

Screening, baseline and ongoing monitoring with the label's stated frequency, hold and discontinue criteria, and counseling points, each quoted from the FDA label.

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Storage and cold chain

Amifampridine: storage and handling

Refrigerate
Yes, as the label states
Label statement
Firdapse prepared suspension: Store FIRDAPSE prepared oral suspension in the refrigerator between 36°F to 46°F (2°C to 8°C) between doses for up to 24 hours.
Freezing
Not addressed
Room temperature
at or below 30°C (86°F)
Label statement
Store FIRDAPSE tablets at 20°C to 25°C (68°F to 77°F) with excursions permitted from 15°C to 30°C (59°F to 86°F) [see USP controlled room temperature].
Back into the refrigerator
Not addressed
Light
Not addressed
Shaking
Not addressed

Temperature excursion helper

Answers only from this label's storage statements. It does not judge whether a product is still usable beyond what the label states.

Within the label's stated room-temperature allowance (at up to 30°C (86°F)). Follow the label's instructions for what to do next.

Entered: 1 day at up to 77°F (25°C).

Store FIRDAPSE tablets at 20°C to 25°C (68°F to 77°F) with excursions permitted from 15°C to 30°C (59°F to 86°F) [see USP controlled room temperature].
Instruct the patient and/or caregiver to discard any unused portion of the suspension after 24 hours.

If anything else happened to the product, or you are unsure, Contact the manufacturer at 1-833-422-8259 (the number printed on the label) about this product.

Where the label prints this number
Distributed by Catalyst Pharmaceuticals, Inc., Coral Gables, FL 33134 For more information, go to www.YourCatalystPathways.com or call 1-833-422-8259 This Instructions for Use has been approved by the U.S.
All storage statements on the label (7)
  • Store FIRDAPSE tablets at 20°C to 25°C (68°F to 77°F) with excursions permitted from 15°C to 30°C (59°F to 86°F) [see USP controlled room temperature].
  • Firdapse tablets: Store FIRDAPSE tablets at room temperature between 68ºF to 77ºF (20ºC to 25ºC).
  • Firdapse prepared suspension: Store FIRDAPSE prepared oral suspension in the refrigerator between 36°F to 46°F (2°C to 8°C) between doses for up to 24 hours.
  • Advise patients to store FIRDAPSE at 68ºF to 77ºF (20ºC to 25ºC).
  • Instruct patients and/or caregivers who prepare the 1 mg/mL suspension of FIRDAPSE that it should be prepared daily and refrigerated between doses.
  • The suspension can be stored under refrigeration for up to 24 hours.
  • Instruct the patient and/or caregiver to discard any unused portion of the suspension after 24 hours.

FDA label version 15, effective April 16, 2026. DailyMed

Dosing and titration calendar

Built only from the schedules the label states (loading, titration, day schedules, cycles and weight bands). Steps the label states in words the calendar cannot place are shown, not guessed.

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Medicare Part D coverage

4%of plans list it
54%of those: prior authorization
0%step therapy
22%quantity limit
99%specialty tier

5,496 Part D plans, CMS formulary files 2026Q3. Look up tier, PA, step therapy and quantity limits by plan

Patient assistance

No manufacturer program page is listed for this drug yet.

Independent foundations and the full directory (checked 2026-11-06). Eligibility and amounts are set by each program; open its page for them.

For licensed clinicians. Use with clinical judgment. Statements are quoted from the FDA label; confirm against the label for the product you are using.