Compare Supplements

There is no established or legitimate human dose. Hydrafinil (9-fluorenol) is an essentially UNSTUDIED grey-market 'research chemical' with no human clinical trials, no approval, and no pharmacovigilance — this library does NOT provide a dosing protocol. Vendors and forums quote figures in the tens of milligrams orally, extrapolated from vague modafinil comparisons, but these are unverified for a product of unknown purity and identity, taken without medical supervision or monitoring. The only human datapoint is a 2021 doping-control pilot study in which three volunteers each took a single 50 mg oral dose of hydrafinil so investigators could map its metabolism and urinary elimination — a detection study, NOT a dosing or efficacy recommendation. There is no published animal efficacy dose for hydrafinil at all.

Morning

No human form is endorsed — hydrafinil is an essentially unstudied 'research chemical' (9-fluorenol) with no approved or supplement form

• Any human use — hydrafinil is an essentially UNSTUDIED grey-market 'research chemical' (9-fluorenol) with no human efficacy or safety trials, no approval, and product of unverified identity, purity and dose; it is NOT a dietary supplement and NOT an approved medicine
• Anyone seeking it for focus, wakefulness or 'nootropic' enhancement — there is no human evidence of benefit for hydrafinil and an extrapolated modafinil-class harm profile
• Anyone with cardiovascular disease, arrhythmia, uncontrolled hypertension, or left-ventricular hypertrophy — modafinil-class agents raise blood pressure and heart rate

• Other stimulants / caffeine / sympathomimetics
• MAO inhibitors / serotonergic and psychiatric medications
• Any prescription medication (CYP-metabolized drugs)