Kleferein: The King is dead. Long live the King!

What is kleferein?

Kleferein is the best euphoric since MDMA. It creates strong serotonin release which provides you sense of well-being and incredible happiness. Compound is usually compared to extasy of very good quality. It was first synthesized in XXI century and it quickly became popular among party-goers.

3,4-CFP; kleferein; white crude
This is best euphoric in the world


Its effects are similar to MDMA, or even better. Of course it depends on subjective opinions but they are just like that. The most important positive effects are:

  • Very strong euphoria
  • Mild stimulation
  • Relaxation and reduced anxiety
  • Empathy
  • Enhanced perception of colors and music
  • Increased sociability  

Neutral effects:

  • Mild hallucinations after consumption of higher doses 
  • Altered colors 
  • Increased perspiration and sweating
  • Impulsiveness

Negative effects:

  • Strong pain during insufflation 
  • Insomnia 
  • Vomiting as overdose effect
  • Possible headaches


Kleferein is sold in form od powder, brown-yellow crystal and tablets. Powder and crystal are dosed similarly, with no significant difference in snorting and consuming:

15-30mg: good mood, relax

40-80mg: strong euphoria, mild stimulation, inner peace

80mg+: very strong euphoria and serotonin overflow 




Basic skeleton of „piperein” molecule was synthesized in XIX century in Germany and name was taken from old German books. In XXI century piperein was modified and thus great euphoric 3-chloro-4-fluoro-piperein was born.

Where to buy

Piperein: https://piperein.com

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