Quick info

4-FA (4-fluoramphetamine or 4-FMP) belongs to the phenethylamine group of substances and is pharmacologically related to amphetamine and methamphetamine. 4-FA has a stimulating and slightly euphoric effect and is one of the less researched new psychoactive substances.

Effect

Dosage

Risks

Safer Use

Mixed use

Sex

Extender

LSD analogues

Synthesis impurities

Contents

Effect

4-FA has a stimulating effect on the central nervous system. In addition, there is a release of serotonin, which gives the effect an emotional, entactogenic component. The effect is described as a mixture of the effects of amphetamine and MDMA, but less intense. Further, it has performance-enhancing and mood-enhancing to euphoric effects. A suppression of hunger, thirst and fatigue as well as nausea is also reported. One has clear thoughts, reflects a lot and has a strong urge to communicate.

Duration

Onset of action:
Swallowed: 30-75 minutes
Snorted: 5-10 minutes‍

Duration of action:
Swallowed: 5-8 hours
Snorted: 3-5 hours

Dosage

Swallowed
Light: 40-100 mg
Medium: 100-130 mg
Heavy: 130-150 mg

Snorted
Light: 10-30 mg
Medium: 30-70 mg
Heavy: 70-100 mg

Caution: the substance irritates the eyes, respiratory tract, skin and mucous membranes and should therefore be swallowed. The nasal mucous membranes become very irritated during a cold and can continue to burn unpleasantly even days later.‍


Forms of appearance

Powder or crystals, rarely in pill or capsule form.

Risks

  • Refrain from the consumption of 4-FA and other serotonin releasing substances such as MAOIs, MDMA, methamphetamine, methylone, 5-HTP and SSRIs/SNRIs. A life-threatening serotonin syndrome can occur!
  • Mixed use with 25x-NBOMe and 25x-NBOH can lead to excessive stimulation with panic attacks, seizures, mind spinning, increased blood pressure, vasoconstriction, and in severe cases can lead to heart failure.
  • Do not take tramadol if you use stimulants. Tramadol and stimulants can both cause strokes, which cumulates the risk.
  • Other potentially harmful combinations cannot be ruled out, as no scientifically based information on interactions is available.
  • 4-FA, like all stimulants, can dampen the perceived effects of alcohol. However, this does not mean that you have less alcohol in your body. If possible, drink as little alcohol as possible when consuming stimulants to avoid overdosing.

Safer Use

  • There is little knowledge about new psychoactive substances. When you use them, you are exposing yourself to unknown risks. Have the substance analyzed in a drug checking. If this is not possible and you still want to use, then feel your way to the desired dose with small amounts.
  • If you decide to use, be as informed as possible about the specific substance and the appropriate dosage - pay attention to your basic mood and the environment in which you use (set and setting), even with NPS.
  • Do not buy a product with a fancy name without declaring the ingredient. Legal does not mean harmless.
  • Inform your friends about what and how much you have consumed.
  • Drink enough non-alcoholic beverages and get some fresh air in between.
  • Accept when the effect runs out, don't add to it right away.
  • Refrain from mixed consumption, as interactions are dangerous and unexplored.
  • Take regular breaks from consumption.
  • People with high blood pressure, heart problems, hyperthyroidism, liver and kidney disease, or circulatory problems should not take New Psychoactive Substances.

Mixed use

  • Refrain from the consumption of 4-FA and other serotonin releasing substances such as MAOIs, MDMA, methamphetamine, methylone, 5-HTP and SSRIs/SNRIs. A life-threatening serotonin syndrome can occur!
  • Mixed use with 25x-NBOMe and 25x-NBOH can lead to excessive stimulation with panic attacks, seizures, mind spinning, increased blood pressure, vasoconstriction, and in severe cases can lead to heart failure.
  • Do not take tramadol if you use stimulants. Tramadol and stimulants can both cause strokes, which cumulates the risk.
  • Other potentially harmful combinations cannot be ruled out, as no scientifically based information on interactions is available.
  • 4-FA, like all stimulants, can dampen the perceived effects of alcohol. However, this does not mean that you have less alcohol in your body. If possible, drink as little alcohol as possible when consuming stimulants to avoid overdosing.
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Emergency

If you or someone else needs urgent help after taking drugs or alcohol, call an ambulance on 144. Tell the emergency responders everything you know.
It could save lives.

Things to know

There are no current articles on this substance

Current warnings

Advisory service