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Solriamfetol

Well Researched

DNRI wakefulness drug from Axsome (acquired Sunosi from Jazz Pharma in 2022) — A-tier evidence in narcolepsy + OSA EDS, B-tier shift work,…

Aliases (6)
Sunosi · JZP-110 · ADX-N05 · ADX-N10 · (2R)-2-amino-3-phenylpropylcarbamate · (R)-2-amino-3-phenylpropyl carbamate hydrochloride
TYPICAL DOSE
75 mg
Daily
ROUTE
Oral (tablet)
Oral
CYCLE
Daily-safe per FDA label and clinical use
As prescribed
STORAGE
Room temp; original container
Room temp

Overview

What is Solriamfetol?

Solriamfetol is a dopamine-norepinephrine reuptake inhibitor (DNRI) approved by the FDA in 2019 (brand name Sunosi) for excessive daytime sleepiness in narcolepsy and obstructive sleep apnea. It is a non-amphetamine wake-promoting agent.

Key Benefits

Improves wakefulness and reduces excessive daytime sleepiness in narcolepsy and OSA, with sustained effects through the day, lower abuse potential than amphetamines, and minimal cardiovascular impact at standard doses.

Mechanism of Action

Inhibits both the dopamine transporter (DAT) and norepinephrine transporter (NET), raising synaptic dopamine and norepinephrine in wake-promoting circuits (locus coeruleus, ventral tegmental area). Unlike amphetamines, it does not significantly cause vesicular monoamine release.

Brand options4 known
SunosiJZP-110ADX-N05ADX-N10

StatusSchedule IV (US DEA, 2019); Rx-only most jurisdictions

Research Indications

Most Effective

~95% renal excretion as unchanged drug

minimal CYP metabolism, so very few liver-mediated drug interactions. Renal impairment matters: half-life extends 1.2× / 1.9× / 3.9× in m…

Research Protocols

Disclaimer: These are commonly discussed research protocols and not medical advice.

Goal:Renal dosing:
Dose:75 mg AM
Frequency:AM
Solo:
Cycle:

Peptide Interactions

L-theanine
Synergistic

200 mg AM: Tempers norepinephrine-driven anxiety/BP without blunting wake-promotion. Most-recommended adjunct.

Magnesium glycinate
Synergistic

200-400 mg AM: BP buffer + anxiety reduction.

Citicoline
Synergistic

250-500 mg AM: PFC acetylcholine support pairs well with the DA/NE drive — anecdotal cognitive synergy.

MAOIs (any)
Avoid

14-day washout BOTH directions REQUIRED. Hypertensive crisis + serotonin syndrome risk. Includes selegiline at higher doses (>10 mg/day, where MAO-A selectiv…

Stimulants (amphetamine, methylphenidate)
Avoid

Additive sympathomimetic load → BP + HR + anxiety stacking. Avoid concomitant unless explicitly directed.

Modafinil / armodafinil
Avoid

Redundant mechanism; don't stack — switch.

Bupropion
Avoid

Both NDRI → additive seizure-threshold lowering + sympathomimetic stack. Avoid.

SNRIs (venlafaxine, duloxetine)
Avoid

NE-NE additive load, BP risk. Use cautiously.

Caffeine high-dose (>300 mg/day)
Avoid

Additive HR + BP + anxiety. Keep total daily caffeine ≤200 mg if on solriamfetol.

Quality Indicators

Pharmacy-dispensed, intact packaging

Prescription tablets in original sealed packaging from a licensed pharmacy.

!

Generic vs branded

Generics are usually fine but bioavailability can vary slightly; track if you switch.

Unbranded blister or counterfeit risk

Counterfeit pharmaceuticals are a known issue; verify pharmacy and lot if buying internationally.

What to Expect

  • Onset
    ~30-60 min, peak around 2 hr.
  • Peak
    experience: Cleaner wakefulness than amphetamines (no jitter, no euphoria, no tunnel vision); more energizing than modafinil for most users — "brighter, more…
  • Taper
    Gentler than amphetamine crash; shorter than modafinil's tail. Some users report mild fatigue rebound by 6-8 PM as plasma levels decline.

Side Effects & Safety 12

Side Effects

  1. 1Headache (12-16%) — usually first 1-2 weeks, typically resolves
  2. 2Nausea (6-9%) — dose-dependent, take with food helps
  3. 3Decreased appetite (6-9%) — dose-dependent; less than amphetamines but real
  4. 4Anxiety (5-9%) — more pronounced at 300 mg; norepinephrine-driven
  5. 5Insomnia (4-6%) — usually means dose taken too late in day or dose too high
  6. 6Increased heart rate (3-5%)
  7. 7Increased blood pressure (3-5%)
  8. 8Dry mouth, palpitations, irritability, agitation, dizziness, jitteriness
  9. 9Constipation, diarrhea
  10. 10Hyperhidrosis
  11. 11Bruxism
  12. 12Mood changes (mild dysphoria or mild euphoria depending on user)

When to Stop

  • Hypertensive episodes — clinically significant BP elevations requiring discontinuation in <2% trial subjects but real. Pharmacovigilance 2025 study (PMC12453233) flagged elevated signals for palpitations + BP elevation, especially in OSA cohort.
  • Major adverse cardiovascular events (MACE) — Theoretical risk from sustained BP elevation. FDA warning labels caution in patients with known CV disease, hypertension, advanced age. Long-term MACE data still maturing.
  • Psychiatric: Agitation, panic attacks, mania (rare), suicidal ideation (very rare; not specifically signal-elevated vs placebo)
  • First 2-4 weeks: Daily BP monitoring (cuff + Oura ring HR baseline). Discontinue if SBP rises >10 mmHg sustained or DBP >5 mmHg sustained.
  • First 8 weeks: Anxiety + insomnia tracking. If anxiety is consistent at 150 mg, drop to 75 mg or discontinue.
  • Renal function check at baseline and annually if continued long-term — drug is renally cleared.

References

SLEEP 2025 Abstract 0864 — Patient Preference Solriamfetol vs Modafinil/Armodafinil

academic.oup.com · 2025

71% real-world preference data, n=62 single-center retrospective.

View Study

SHARP study CHEST 2024

journal.chestnet.org · 2024

05470-9/fulltext) — Phase 4 RCT cognitive function in OSA, RBANS effect size 0.36 independent of sleepiness reduction.

View Study

Solriamfetol cognitive function SHARP — Neurology

neurology.org

Same trial, neurology venue.

View Study

Sunosi cognitive function Pharmacy Times

pharmacytimes.com

SHARP coverage.

View Study

SHARP secondary analysis — Patient Care Online

patientcareonline.com

Independent-of-sleepiness analysis.

View Study
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