Want to buy 5-APB?

5-APB is a research substance belonging to the benzofuran family. The substance is chemically related to MDMA and MDA, but also to designer drugs such as 6-APB and 5-MAPB. 5-APB was sold as a research chemical for a long time and was mainly studied for its loving, empathogenic and mildly stimulating effects. Would you still like to buy 5-APB? Unfortunately, this is no longer possible since 1 July 2025, as the research substance has been added to the Opium List. This means that buying, selling and possessing this substance has become illegal.

Effects of 5-APB

The effects of 5-APB were comparable to those of MDMA, ut the effect was often longer-lasting and less intense. The euphoric feelings were also somewhat less powerful. Users described the experience as more mellow, introspective and warm. Possible effects could include:

• Increased empathy and connectedness
• Improved mood
• Mild stimulation and energy
• Enhanced sensory perception (especially touch and music)
• A feeling of calm or inner peace

On average, 5-APB began to take effect after 30 to 90 minutes and lasted for an average of 6 to 10 hours.

Side effects

As with all psychoactive substances, 5-APB could also cause undesirable effects such as:

• Nausea 
• Stomach problems
• Insomnia
• Increased heart rate 
• High blood pressure
• Restlessness 
• Anxiety 
• Risk of overheating
• Gloominess or fatigue during the comedown
• Jaw clenching 
• Teeth grinding

In addition, little research had been done on long-term toxicity, which made its use risky. There have been reports of serious side effects and even fatal incidents, especially at high doses or in combination with other substances. These are the main reasons why the Dutch government has placed 5-APB and other benzofurans on the list of prohibited substances.

Dosage

Please note: 5-APB is no longer legal. The information below is intended solely for harm reduction and educational purposes. However, for research purposes, the following dosages could previously be used: 

• Mild effects: 60-80mg
• Moderate effects: 80-120mg
• Strong effects: 120-150 mg
• Duration of effect 6-10 hours, with a long comedown

Because the effects of 5-APB came on slowly, re-dosing was strongly discouraged. This was mainly to prevent the risk of overdose and side effects.

Mechanism of action

5-APB acted as a serotonin, dopamine and noradrenaline reuptake inhibitor. This means that it worked similarly to MDMA, although the ratio of neurotransmitters was different, making the experience with 5-APB perceived as calmer and less “euphoric”. In addition, 5-APB also had a direct effect on serotonin receptors. Excessive stimulation of this type of receptor was associated with heart valve abnormalities with prolonged or repeated use, although these results were not fully supported by human research. Nevertheless, these major risks were largely responsible for 5-APB becoming illegal with the legislative change of 1 July 2025. 

You can no longer order 5-APB from Funcaps!

Previously, you could order 5-APB from Funcaps for research purposes. This meant you could order this RC and other research substances for research purposes and not for recreational use. However, since 1 July 2025, we no longer sell benzofurans, synthetic cannabinoids and other illegal substances. So, if you still want to do research, you will have to study other products with a stimulating effect or other research chemicals that are still legal, such as tryptamines and arylcyclohexylamines. So don't worry: there is still a whole world of research substances that can be legally researched! Order your favourite products online and experience the purity and quality of our products for yourself responsibly and legally!