4-fluorometilfenidat

4-Fluoromethylphenidate (commonly known as 4F-MPH) is a novel synthetic stimulant of the phenidate class that produces long-lasting euphoriant, and stimulating effects when administered. It is a closely related structural analog of the commonly prescribed ADHD drug methylphenidate (known by the brand-names Ritalin and Concerta).

Also known as: 4-fmph, 4-fl-mph, 4-fluoro-mph, Para‑fluoromethylphenidate, PF‑MPH, 4F-methylphenidate

Classification

Chemical: Phenidate
Psychoactive: Stimulant
Tag: Habit-Forming
Tag: Research-Chemical
Tag: substituted phenidate
Tag: Tentative

Effects

Nausea
Vasoconstriction
Spontaneous Bodily Sensations
Pupil Dilation
Stimulation
Increased Heart Rate
Motivation Enhancement
Memory Enhancement
Emotion Suppression
Dizziness
Thought Acceleration
Ego Inflation
Dehydration
Increased Libido
Appetite Suppression
Increased Music Appreciation
Light Sensitivity
Increased Sexuality

Routes of Administration

Oral

Dosage

Common: 10-15 mg
Heavy: 20-25 mg
Light: 5-10 mg
Strong: 15-20 mg
Threshold: 1-5 mg

Duration

Onset: 0.33-0.75 h
Peak: 2-4 h
Offset: 1-2 h
After Effects: 5-10 h
Total Duration: 4-8 h

Insufflated

Dosage

Threshold: 1–2 mg
Heavy: 20+ mg
Common: 8-14 mg
Light: 5-8 mg
Strong: 14-20 mg

Duration

Onset: 0.03-0.17 h
Peak: 0.25-1 h
Offset: 1-2 h
After Effects: 4-16 h
Total Duration: 4-6 h

Harm Reduction

Check interactions before mixing substances, pay attention to dose spacing and hydration, and treat all dosage guidance as approximate rather than guaranteed safe.

Sources

Substance data is aggregated from the following public harm-reduction and reference sources.

Links

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