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4-FEA, also known as 4-Fluoroethamphetamine, is a synthetic drug that belongs to the amphetamine class of compounds. It is a stimulant and a serotonergic agent, which means that it affects both the central nervous system and the levels of serotonin in the brain.

History and Legal Status

4-FEA has a short history, as it was first synthesized in 2010 by a team of researchers in Japan. The drug is not approved for any medical use and is considered a Schedule I controlled substance in many countries, including the United States.

Chemical Properties

The molecular formula of 4-FEA is C11H15FN, and its molar mass is 181.24 g/mol. The drug has a melting point of 144-145°C and a boiling point of 292-293°C. 4-FEA is a white crystalline powder that is soluble in water and alcohol.


As mentioned earlier, 4-FEA is a stimulant and a serotonergic agent. It acts by increasing the levels of dopamine, norepinephrine, and serotonin in the brain, which results in feelings of euphoria, increased energy, and decreased appetite.

4-FEA has been shown to have a higher affinity for the serotonin transporter (SERT) compared to other amphetamines, which could make it more potent in terms of its serotonergic effects.

Effects and Risks

The effects of 4-FEA can vary depending on the dosage and the individual’s response to the drug. Some of the reported effects of 4-FEA include:

Increased sociability
Increased energy and alertness
Decreased appetite
Dilated pupils
Increased heart rate and blood pressure
There are also several risks associated with the use of 4-FEA. One of the main risks is the potential for addiction and dependence, as the drug can be highly reinforcing. Long-term use can also lead to several negative health consequences, including cardiovascular problems, neurological damage, and mental health issues.


In conclusion, 4-FEA is a synthetic drug that belongs to the amphetamine class of compounds. It is a stimulant and a serotonergic agent that can have both positive and negative effects on the central nervous system. While 4-FEA is not approved for any medical use, it is still used recreationally by some individuals. However, due to the potential risks associated with its use, it is important to approach the drug with caution and to seek medical advice if any negative effects are experienced.


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