What is 4-f?

4-fluoroamphetamine (4-FA) is a synthetic psychoactive drug that belongs to the amphetamine class of compounds. It has been marketed as a designer drug and a research chemical since the early 2000s. The drug is known to produce euphoria, increased sociability, and elevated mood, and it also has some stimulant and empathogenic effects.

According to anecdotal reports, 4-FA is often ingested orally in capsule or tablet form, and its effects can last up to 6-8 hours. The drug has been found to cause some potential adverse effects such as elevated heart rate and blood pressure, insomnia, anxiety, and drug dependence and abuse.

4-FA is a controlled substance in some countries, and its production, distribution, and possession can result in legal action. The drug's safety and long-term effects on humans are largely unknown, and more research is necessary to learn about its potential medical and recreational applications.