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The FDA is expected to decide on Pitolisant GR for Narcolepsy (gastro-resistant tablet) by April 1, 2027, under an NDA from Harmony Biosciences.
What is being decided
Harmony Biosciences has an NDA under FDA review for Pitolisant GR in Narcolepsy (gastro-resistant tablet). A gastro-resistant coated version of pitolisant, the drug in Wakix, for people with narcolepsy. In Harmony's pivotal bioequivalence study, 17.8 mg of pitolisant GR matched the 17.8 mg Wakix tablet, and in a dosing study every patient started directly at that dose without the step-by-step increase Wakix needs. Harmony said in its August 4, 2026 quarterly release that the FDA accepted the application in July.
Who this decision matters to
Narcolepsy type 1 is a chronic neurologic disorder caused by loss of hypocretin-producing neurons, resulting in severe daytime somnolence and cataplexy. HLA-DQB1*0602 association and brain imaging support the autoimmune hypothesis.
Medications enhance wakefulness; behavioral approaches optimize quality of life.
Prevalence: 1 in 2,000 to 3,000 people; often undiagnosed. See our full Narcolepsy Type 1 page for current treatments, recruiting trials, and community resources.
What each outcome would mean
An approval starts a second race rather than ending the first one: specialty pharmacy setup, insurance review, and patient assistance typically take weeks even when everything goes right. Our guide to the 90 days after a rare disease approval explains the timeline and the moves families can make on day 1.
A complete response letter would mean the FDA declined to approve in the application's current form. The letter describes what the FDA wants addressed, and the company then decides whether to resubmit, run more studies or stop. Either way, this page updates with the outcome and what it means.
Where Narcolepsy Type 1 treatment stands today
Read our full Narcolepsy Type 1 treatment summary
Medications enhancing central nervous system wakefulness form the foundation of therapy: stimulants including modafinil (first-line), armodafinil, methylphenidate, and amphetamine derivatives manage excessive daytime sleepiness. Sodium oxybate (GHB) addresses both EDS and cataplexy and improves nighttime sleep, and it requires careful dosing and patient education.
Pitolisant, a histamine H3-receptor antagonist, offers an alternative mechanism for both EDS and cataplexy and is gaining clinical adoption. Selective serotonin or norepinephrine reuptake inhibitors (SSRIs/SNRIs) manage cataplexy alone.
In August 2026 the FDA approved oveporexton (Orzeyful), a twice-daily orexin receptor 2 agonist and the first medicine to directly target the loss of orexin signaling behind narcolepsy type 1, for adults. It can be sold only after the DEA completes controlled substance scheduling, which Takeda expected by November 2026.
Behavioral strategies including scheduled naps (10-20 minutes), strict sleep hygiene, avoidance of sedating medications, and comprehensive safety measures optimize quality of life. Other orexin receptor 2 agonists, including ALKS 2680 (NCT07455383) and ORX750 (NCT06752668), are being tested in clinical trials.
Genetic counseling helps families understand disease mechanism and inheritance patterns. Work with sleep medicine specialists experienced in narcolepsy management.
The Narcolepsy Type 1 page has every treatment and trial →Meanwhile, 19 Narcolepsy Type 1 studies are enrolling
Whatever the FDA decides here, research on Narcolepsy Type 1 does not stop. Of these, 18 test a treatment; the others follow patients over time. The most recently updated:
We'll email you when the decision is public, with what it means in plain language, and when new trials open for Narcolepsy Type 1. Unsubscribe anytime.
You'll get new recruiting trials, changes to trials, FDA decisions and condition news for Narcolepsy Type 1. Turn any of these off from the link in every email.
Frequently asked questions
When will the FDA decide on Pitolisant GR?
The FDA's target date (PDUFA date) for Pitolisant GR in Narcolepsy (gastro-resistant tablet) is April 1, 2027.
Who disclosed it: Harmony Biosciences. The FDA does not publish these dates.
Can it move: the FDA can act early, and a major amendment to the application can push the date back 3 months.
What is Pitolisant GR being reviewed for?
Harmony Biosciences submitted an NDA for Pitolisant GR in Narcolepsy (gastro-resistant tablet).
What to know: A gastro-resistant coated version of pitolisant, the drug in Wakix, for people with narcolepsy. In Harmony's pivotal bioequivalence study, 17.8 mg of pitolisant GR matched the 17.8 mg Wakix tablet, and in a dosing study every patient started directly at that dose without the step-by-step increase Wakix needs. Harmony said in its August 4, 2026 quarterly release that the FDA accepted the application in July.
Is there already an FDA-approved treatment for Narcolepsy Type 1?
Yes. Trial Friend's drug list includes 1 FDA-approved drug for Narcolepsy Type 1.
Approved: Orzeyful (oveporexton).
Check: the Narcolepsy Type 1 page also searches FDA drug labels for approved treatments.
Can I get Pitolisant GR before the FDA decides?
Usually only through a clinical trial or an expanded access program, and the company decides whether to offer one.
Trials: 19 Narcolepsy Type 1 studies are enrolling now, 18 of them testing a treatment. See them.
Check your fit: Match Me compares your details with every open trial.
Expanded access: your doctor can ask Harmony Biosciences directly. Registered programs are listed on ClinicalTrials.gov.
How much will Pitolisant GR cost?
Harmony Biosciences has not announced a price. Drugmakers usually set it around approval.
Help paying: drugmaker programs and charity funds usually open at launch.
Find help: the patient assistance finder lists programs by insurance type.
What happens after the Pitolisant GR decision?
This page updates with the outcome the day it is announced.
If approved: getting the drug still takes time. Specialty pharmacy setup, insurance review and patient assistance often take weeks. Our guide covers what families can do on day 1.
If not approved: a complete response letter means the FDA declined the application in its current form. Many are about manufacturing or how data were presented, and companies often resubmit.
Where this date comes from
The FDA does not publish PDUFA dates; companies disclose them. This one comes from Harmony Biosciences press release, Aug 4 2026. Dates can move, and the FDA can act early or late. This page rechecks against our calendar, which is re-verified daily.