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Solriamfetol

Phase 3

ADHD | Small molecule | Psychiatry |Axsome Therapeutics, Inc.|Last Updated: Aug 19, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials2
Total Enrollment816

FDA Designations

No designations recorded

Clinical trial landscape

Solriamfetol · 9 trials · 12 indications

Phase 3 7Phase 2 1Phase 1 1
NCT07773883An Open-Label Study to Assess the Long-Term Safety of Solriamfetol in Children and Adolescents With ADHDADHD
ENROLLING BY_INVITATION300 Analytics
NCT07484217Clinical Assessment of Response in the Treatment of Depression With Daytime Sleepiness Using SolriamfetolMajor Depressive Disorder With Excessive Daytime Sleepiness Symptoms
RECRUITING508 Analytics
NCT06878976A Study to Assess the Long-term Safety and Efficacy of Solriamfetol in Subjects With Binge Eating DisorderBinge-Eating Disorder
ENROLLING BY_INVITATION236 Analytics
NCT06568367Studying Solriamfetol Modulation of TAAR-1, Dopamine, and Norepinephrine in Shift Work Disorder (SUSTAIN)Excessive Sleepiness
RECRUITING520 Analytics
NCT06413433Elucidating TAAR-1, Dopamine, and Norepinephrine in Binge Eating Disorder Using SolriamfetolBinge-Eating Disorder
RECRUITING450 Analytics
NCT06360419Progressing TAAR-1, Dopamine, and Norepinephrine in Depression Using SolriamfetolMajor Depressive Disorder
COMPLETED346 Analytics
NCT05972044A Study to Assess the Efficacy and Safety of Solriamfetol in Subjects With ADHD (FOCUS)ADHD
COMPLETED516 Analytics
PHASE3ENROLLING BY_INVITATION
An Open-Label Study to Assess the Long-Term Safety of Solriamfetol in Children and Adolescents With ADHD
ADHDUnlock trial analytics
PHASE3RECRUITING
Clinical Assessment of Response in the Treatment of Depression With Daytime Sleepiness Using Solriamfetol
Major Depressive Disorder With Excessive Daytime Sleepiness SymptomsUnlock trial analytics
PHASE3ENROLLING BY_INVITATION
A Study to Assess the Long-term Safety and Efficacy of Solriamfetol in Subjects With Binge Eating Disorder
Binge-Eating DisorderUnlock trial analytics
PHASE3RECRUITING
Studying Solriamfetol Modulation of TAAR-1, Dopamine, and Norepinephrine in Shift Work Disorder (SUSTAIN)
Excessive SleepinessUnlock trial analytics
PHASE3RECRUITING
Elucidating TAAR-1, Dopamine, and Norepinephrine in Binge Eating Disorder Using Solriamfetol
Binge-Eating DisorderUnlock trial analytics
PHASE3COMPLETED
Progressing TAAR-1, Dopamine, and Norepinephrine in Depression Using Solriamfetol
Major Depressive DisorderUnlock trial analytics
PHASE3COMPLETED
A Study to Assess the Efficacy and Safety of Solriamfetol in Subjects With ADHD (FOCUS)
ADHDUnlock trial analytics

Study Endpoints

Primary Endpoints

Treatment-Emergent Adverse Events (TEAEs)
Up to 52 weeks

An AE is defined as treatment emergent if the first onset or worsening is after the first administration of the study drug and not more than 7 days after the last dose of study drug or 30 days after the last dose of study drug for SAEs.

Time from randomization to relapse of depressive symptoms
Up to 24 weeks.
Time from randomization to relapse of binge eating in the RW segment
Up to 24 weeks
Change from Baseline to Week 12 in the mean sleep latency time as measured by the Maintenance of Wakefulness Test (MWT).
12 weeks
Change from Baseline to Week 12 in the Clinical Global Impressions of Severity of Illness (CGI-S) for sleepiness during the night shift.
12 weeks
Change from Baseline to Week 12 in number of binge eating episodes
12 weeks
Montgomery-Åsberg Depression Rating Scale (MADRS)
6 weeks
Incidence of treatment-emergent adverse events
6 weeks
Change from Baseline to Week 6 in the AISRS total score
6 weeks

Adult ADHD Investigator Symptom Report Scale (AISRS)

Modified Fatigue Impact Scale (MFIS) Score
Up to 4 weeks

MFIS score measured during the last three days of each 4-week medication period. The total score of the MFIS ranges from 0 to 84. Higher scores denote more severe fatigue.

Maximum Concentration (Cmax) of Solriamfetol in Breast Milk and Plasma
Predose, 1, 1.5, 3, 6, 8.5, 10, 13, 15, 21, 24, 28, 36, 44, and 72 hours post-dose.

The observed maximum breast milk and plasma concentrations (Cmax) of solriamfetol after administration.

Time to Reach Maximum Concentration (Cmax) (Tmax) in Breast Milk and Plasma
Predose, 1, 1.5, 3, 6, 8.5, 10, 13, 15, 21, 24, 28, 36, 44, and 72 hours post-dose.

The time to reach the maximum breast milk and plasma concentrations (Tmax) of solriamfetol after administration.

Area Under the Concentration-Time Curve From Time 0 to the Time t of the Last Quantifiable Concentration (AUC 0-t) in Breast Milk and Plasma
Predose, 1, 1.5, 3, 6, 8.5, 10, 13, 15, 21, 24, 28, 36, 44, and 72 hours post-dose.

The area under the plot of breast milk and plasma concentrations of solriamfetol against time after drug administration from predose (time 0) to Time t of the Last Quantifiable Concentration.

Area Under the Concentration-Time Curve From Time 0 to Infinity (AUC 0-inf) in Breast Milk and Plasma
Predose, 1, 1.5, 3, 6, 8.5, 10, 13, 15, 21, 24, 28, 36, 44, and 72 hours post-dose.

The area under the plot of breast milk and plasma concentrations of solriamfetol against time after drug administration from predose (time 0) to Infinity.

Apparent Elimination Half-Life (t^1/2) of Solriamfetol in Breast Milk and Plasma
Predose, 1, 1.5, 3, 6, 8.5, 10, 13, 15, 21, 24, 28, 36, 44, and 72 hours post-dose.

The half-life or the period of time required for the concentration of solriamfetol in breast milk and plasma to be reduced to one-half of the administered amount.

Apparent Oral Clearance (CL/F) of Solriamfetol
Predose, 1, 1.5, 3, 6, 8.5, 10, 13, 15, 21, 24, 28, 36, 44, and 72 hours post-dose.

Apparent oral clearance (CL/F) of solriamfetol in plasma.

Apparent Volume of Distribution (Vd/F) of Solriamfetol
Predose, 1, 1.5, 3, 6, 8.5, 10, 13, 15, 21, 24, 28, 36, 44, and 72 hours post-dose.

Apparent volume of distribution (Vd/F) of solriamfetol in plasma.

Milk:Plasma Ratio
Predose, 1, 1.5, 3, 6, 8.5, 10, 13, 15, 21, 24, 28, 36, 44, and 72 hours post-dose.

Area Under the concentration-time curve (AUC) in breast milk divided by AUC in plasma.

Amount Excreted in Breast Milk Over 72 Hours (Amilk)
Predose, 1, 1.5, 3, 6, 8.5, 10, 13, 15, 21, 24, 28, 36, 44, and 72 hours post-dose.

The amount of solriamfetol excreted in breast milk samples over 72 hours.

Daily Infant Dose
Predose, 1, 1.5, 3, 6, 8.5, 10, 13, 15, 21, 24, 28, 36, 44, and 72 hours post-dose.

Daily solriamfetol dose that may be received by the infant through breastfeeding.

Relative Infant Dose
Up to 24 hours post-dose.

The percentage of the weight-adjusted maternal solriamfetol dose excreted in breast milk over 24 hours.

Secondary Endpoints

Fatigue Severity Scale (FSS) Score
Up to 4 weeks
Epworth Sleepiness Scale (ESS) Score
Up to 4 weeks
Incidence of Treatment-Emergent Adverse Events (TEAEs)
Predose (-2 to 0 hours) up to Days 9-11 post-dose.
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
SolriamfetolEXPERIMENTALUp to 52 weeks
Solriamfetol 150mgEXPERIMENTAL* In the open-label period; * In the randomized double-blind period (if applicable)
PlaceboPLACEBO_COMPARATOR• In the randomized double-blind period (if applicable)
Solriamfetol 300mgEXPERIMENTALUp to 12 weeks
Solriamfetol 150 mgEXPERIMENTALUp to 12 weeks
Solriamfetol 300 mgEXPERIMENTALUp to 12 weeks
solriamfetol then placebo firstEXPERIMENTALFour weeks of treatment with solriamfetol followed by one week of washout and four weeks of treatment with placebo
placebo then solriamfetol firstEXPERIMENTALFour weeks of treatment with placebo followed by one week of washout and four weeks of treatment with solriamfetol

Interventions

NameTypeDescription
SolriamfetolDRUGSolriamfetol capsules, taken once daily
Solriamfetol 150 MGDRUGSolriamfetol tablets, taken once daily
PlaceboDRUGPlacebo tablets, taken once daily
Solriamfetol 300 mgDRUGSolriamfetol tablets, taken once daily
Solriamfetol 150 mg Oral TabletDRUGSingle-dose 150 mg tablet orally administered.
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Eligibility Criteria

Age Range6 Years to 18 Years
SexALL
Healthy VolunteersNo
Study Sites2

Inclusion Criteria: * Completed Study SOL-ADHD-302 (FOCUS-2) or Study SOL-ADHD-304 (FOCUS-3). * Has a parent/legal guardian to provide written informed consent and/or is willing to provide written informed assent to participate in the study. Exclusion Criteria: * Unable to comply with study proce...

Countries:United StatesCanada
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Competitive Landscape -ADHD 3 trials

CompanyTickerTrialsLead PhaseDrugs
Supernus Pharmaceuticals, Inc.SUPN1PHASE3SPN-812
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Recent Changes (Last 90 Days)

LOWAug 20, 2026NCT07773883NEW_TRIAL: changed
LOWAug 20, 2026NCT07773883NEW_TRIAL: changed
LOWAug 20, 2026NCT07773883NEW_TRIAL: changed
LOWAug 20, 2026NCT07773883NEW_TRIAL: changed
HIGHAug 11, 2026NCT06878976Enrollment: 300 → 236
HIGHAug 11, 2026NCT06878976Enrollment: 300 → 236
MEDIUMJul 28, 2026NCT06413433primaryCompletionDate: changed
MEDIUMJul 28, 2026NCT06413433primaryCompletionDate: changed
LOWJul 24, 2026NCT07484217lastUpdatePostDate: changed
LOWJul 24, 2026NCT06568367lastUpdatePostDate: changed
LOWJul 24, 2026NCT07484217lastUpdatePostDate: changed
LOWJul 24, 2026NCT06568367lastUpdatePostDate: changed
LOWJun 9, 2026NCT06170970lastUpdatePostDate: changed
LOWJun 9, 2026NCT06170970lastUpdatePostDate: changed
LOWJun 9, 2026NCT06170970lastUpdatePostDate: changed
LOWJun 9, 2026NCT06170970lastUpdatePostDate: changed

Frequently asked questions about Solriamfetol

What is Solriamfetol used for?

Solriamfetol is an investigational small molecule being studied for binge-eating disorder, ADHD, excessive sleepiness, major depressive disorder, major depressive disorder with excessive daytime sleepiness symptoms, and multiple sclerosis. It is in Phase 3 clinical development for several of these psychiatric and neurologic indications.

What does Solriamfetol target?

Solriamfetol targets the trace amine-associated receptor 1 (TAAR-1) and also affects dopamine and norepinephrine systems, as indicated by the trial title 'Progressing TAAR-1, Dopamine, and Norepinephrine in Depression Using Solriamfetol.' This mechanism is being studied for its potential effects in depression and other conditions.

Who makes Solriamfetol?

Solriamfetol is being developed by Axsome Therapeutics, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol AXSM. The company is conducting clinical trials to evaluate the drug's efficacy and safety across multiple psychiatric and neurologic indications.

What phase is Solriamfetol in?

Solriamfetol is in Phase 3 clinical development for ADHD and major depressive disorder, with completed Phase 3 trials in these areas. It is also being studied in a Phase 2 trial for multiple sclerosis fatigue. The drug is investigational and not yet approved by regulatory authorities.

What clinical trials is Solriamfetol in?

Solriamfetol has been studied in several clinical trials, including NCT05972044 (Phase 3, ADHD, completed, 516 participants), NCT06360419 (Phase 3, major depressive disorder, completed, 346 participants), NCT06170970 (Phase 2, multiple sclerosis fatigue, recruiting, 46 participants), and NCT07773883 (Phase 3, ADHD in children and adolescents, enrolling by invitation, 300 participants).

Is Solriamfetol the same as Solriamfetol 150 mg?

Yes, Solriamfetol 150 mg and Solriamfetol 150 MG refer to the same drug, solriamfetol, at a specific dosage strength. The drug is being developed by Axsome Therapeutics under the brand name solriamfetol, and the 150 mg formulation is one of the doses being evaluated in clinical trials.