IUPAC-Name: N-ethyl-4-fluoro-α-methyl-benzeneethanamine, monohydrochloride

CAS # 3823-31-2

Other name: 4-Fluoroethamphetamine (hydrochloride)

Appearance: powder

Form: null

NMR Analysis: C11H16FN - HCl

SKU: MK1000103 Category:

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Buy 4-FEA, At rckopen you can buy reliable 4-FMA for research purposes. 4-FMA belongs to the amphetamine subgroup and has similar effects to MDMA, including euphoria, energy and increased empathy. The dosage of 4-FMA affects the intensity of research, and it is advisable to buy it from a reliable seller such as Funcaps to ensure its quality and origin. Keep in mind that 4-FMA is not intended for human consumption and should be handled and stored safely.


Buy 4-FMA, whose scientific name is 4-fluoromethamphetamine, is a subtype of amphetamine. The first official sale of 4-FMA was in 2006 in Japan. This research chemical, like the super popular research chemicals 2-FA and 3-FA, has become increasingly popular in the Netherlands over the years. This popularity, which has increased in the Netherlands since 2007, is also due to its researched effects. Should you wish to buy 4-FMA for research purposes, we recommend you do so from a reliable party like Funcaps. This is because we guarantee both the quality and origin of the research substance purchased. In addition, the order4 FMA effect may have different outcomes in your research if you buy it from a non-reliable seller, it is then not certain what it contains.


Research has been done on the effects of 4-Fluoromethamphetamine. The 4 FMA effects varied from study to study, no two studies are the same, of course. So the measured 4 FMA experience may vary from study to study, but the common thread is as follows: it is reported to have a similar effect to MDMA by increasing euphoric experiences. It is also said to give you more energy. The increase in happy and warm feelings, also called the 'cuddle feeling', is in line with the increased empathy experienced. It also increases feelings of togetherness and the need to be open to others in a verbal way. This stands in line with other research chemicals tested in a controlled environment. Is this not the research you're looking for? Then check out our other popular research chemicals, such as Cathinones!

Please note that all information on these research chemicals and the research chemicals themselves are for educational and research purposes only. These products are not supplements and are not suitable for human consumption.

Also, because it is an amphetamine, the 4-FMA experience can cause gnashing of teeth and take away the appetite. Research also shows that the overheating effect is less of an issue than with other known amphetamines. What does agree is that, as with, say, XTC, the 4 FMA dosage directly plays into the intensity of 'absorbing' music into your body, for example. Last but not least, the study notes that the empathic effect is most noticeable in the first three hours, after which in the following hour 4 FMA has an energetic effect. It can take up to an hour for all this to be noticeable.

In addition, according to research and users who shared their views online, the following is an expected side effect: 4-FMA can work anywhere between four and six hours. Scenarios where more was taken after an initial dose led to a noticeable effect of 24 hours. It is also noted that the noticeable effects of 4-FEA buying are much compared to banned drugs like MDMA. It should be noted that noticeable effects can and will vary from one research situation to another. Just like people, no two studies are ever the same.


To what extent the effects of 4 FMA are noticeable is directly related to the dosage studied. The usually normal doses used for research are between 70 and 140 mg. Usually, 4 FMA occurs as a white-looking powder. This powder can also take place in a capsule or pellet. A higher dose can cause the results of the research to be noticeable at higher altitudes. At high doses, one of the biggest after-effects is said to be sleeplessness.


All our parcels are delivered via DHL or PostNL. DHL for foreign shipments and PostNL for domestic shipments. When ordered before 4.30pm on a working day, it is dispatched the same day. In addition, the packaging comes with complete discretion. Thus, within the Netherlands, we have four options for delivery. Namely:

  • A normal shipment, this is an order in a blank envelope with no sender. The delivery time for this is approximately one to two days
  • Track and trace shipment, same as above only with track and trace
  • 'Special times' shipping, this order with track and trace will be delivered at a specific time
  • PostNL collection point, here you can choose to collect your parcel from a PostNL collection point near you


In case of contact of 4 FMA with eyes: Rinse carefully with water for at least 10 to 15 minutes, remove contact lenses if necessary. In case of contact with skin: Rinse with water, if possible also with soap. In case of inhalation: Get fresh air and adopt a position that promotes breathing.

Do not expose 4-FMA to heat sources. Store it in a dry environment at room temperature and store it in proper packaging. Keep it out of the reach of children. Good stability of buy 4-FEA at the above conditions can last up to two years.

Additional information


25 GSM, 50 GSM, 100 GSM, 250 GSM, 500 GSM, 1000 GSM


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