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4-Fluoromethylphenidate (commonly known as 4F-MPH) is a synthetic stimulant of the substituted phenethylamine and piperidine classes 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).

The two substances are believed to have very similar pharmacological mechanisms as monoamine reuptake inhibitors but have been reported to display distinctive subjective effects, with 4F-MPH being considered significantly more euphoric and recreational.

Physical effects
Appetite suppression
Increased heart rate
Increased perspiration
Teeth grinding – This component can be considered to be less intense when compared with that of MDMA.

After effects
The effects which occur during the offset of a stimulant experience generally feel negative and uncomfortable in comparison to the effects which occurred during its peak. This is often referred to as a “comedown” and occurs because of neurotransmitter depletion. Its effects commonly include:
Cognitive fatigue
Motivation suppression
Thought deceleration

Cognitive effects
Analysis enhancement
Cognitive fatigue
Emotion suppression
Focus enhancement
Increased music appreciation
Motivation enhancement
Thought acceleration
Thought organization

4F-MPH is sold for research purposes only and is not be utilized for any other purposes.