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Solriamfetol

Phase 3

ADHD | Small molecule | Psychiatry |Axsome Therapeutics, Inc.|Last Updated: Jun 9, 2026

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Market & Valuation
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment516
FDA Designations
No designations recorded
Clinical trial landscape

Solriamfetol · 6 trials · 11 indications

Phase 3 4Phase 2 1Phase 1 1
NCT07484217Clinical Assessment of Response in the Treatment of Depression With Daytime Sleepiness Using SolriamfetolMajor Depressive Disorder With Excessive Daytime Sleepiness Symptoms
RECRUITING508 Analytics
NCT06568367Studying Solriamfetol Modulation of TAAR-1, Dopamine, and Norepinephrine in Shift Work Disorder (SUSTAIN)Excessive Sleepiness
RECRUITING520 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
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
PHASE3RECRUITING
Studying Solriamfetol Modulation of TAAR-1, Dopamine, and Norepinephrine in Shift Work Disorder (SUSTAIN)
Excessive SleepinessUnlock 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
Time from randomization to relapse of depressive symptoms
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
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
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
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 300 mgEXPERIMENTALUp to 6 weeks
Solriamfetol 150 mgEXPERIMENTALUp to 6 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
SolriamfetolEXPERIMENTALParticipants will receive a single oral dose of solriamfetol 150 mg with 240 mL water at 0 hour on the morning of Day 1, 2 hours after completion of a light breakfast.
Interventions
NameTypeDescription
Solriamfetol 150 MGDRUGSolriamfetol tablets, taken once daily
PlaceboDRUGPlacebo tablets, taken once daily
Solriamfetol 300 mgDRUGSolriamfetol tablets, taken once daily
SolriamfetolDRUGsolriamfetol 75 mg daily for 3 days and will increase the dose to 150 mg daily starting on day 4 of the treatment period (total of four weeks)
Solriamfetol 150 mg Oral TabletDRUGSingle-dose 150 mg tablet orally administered.
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Eligibility Criteria
Age Range18 Years to 65 Years
SexALL
Healthy VolunteersNo
Study Sites13

Inclusion Criteria: * Currently meets the DSM-5 criteria for MDD without psychotic features, based on the SCID-5-CT * Excessive daytime sleepiness symptoms * Able to comply with study procedures * Male or female, aged 18 to 65 years inclusive Exclusion Criteria: * Any clinically significant medic...

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)
LOWJun 9, 2026NCT06170970lastUpdatePostDate: changed
LOWJun 9, 2026NCT06170970lastUpdatePostDate: changed
LOWJun 9, 2026NCT06170970lastUpdatePostDate: changed
LOWJun 9, 2026NCT06170970lastUpdatePostDate: changed
LOWMay 26, 2026NCT07484217primaryCompletionDate: changed
LOWMay 26, 2026NCT06568367primaryCompletionDate: changed
LOWMay 26, 2026NCT06170970primaryCompletionDate: changed
LOWMay 24, 2026NCT07484217studyFirstPostDate: changed
LOWMay 24, 2026NCT06568367studyFirstPostDate: changed
LOWMay 24, 2026NCT06170970studyFirstPostDate: changed