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4F-MPH sold as 4-FA
Risk assessment
A sample declared as 4-FA (4-fluoroamphetamine) did not contain 4-FA , but rather 4F-MPH (4-fluoromethylphenidate), caffeine and a small amount of MDMA (2.0%).
4F-MPH is a synthetic stimulant from the phenidate group and structurally related to methylphenidate (Ritalin), which is used to treat ADHD and narcolepsy. It works mainly by increasing the concentration of dopamine and noradrenaline in the brain and leads to a stimulating, concentration-enhancing and drive-boosting effect.
Although both substances have stimulating properties, there are significant differences in their effect profile, dosage and duration of action, which can lead to an increased risk of overdose.
4F-MPH primarily has a focusing and performance-enhancing effect - with a faster onset of action and shorter duration of action (approx. 4-6 hours vs. 4-FA: 4-8 hours).
4-FA is dosed much higher - an average dose is around 100-130 mg orally - while for 4F-MPH, 5-15 mg nasally or orally is considered an average dose. If a dose usual for 4-FA is applied to a sample with 4F-MPH, this can lead to an unexpectedly strong and harmful effect.
Higher doses of 4F-MPH can lead to seizures, cardiac arrhythmia, insomnia, nervousness, headaches and confusion.
If several pharmacologically active substances are taken at the same time, there is an additional health risk. The combination of 4F-MPH with caffeine and MDMA leads to an increased strain on the cardiovascular system. However, as MDMA is only contained in very small quantities in this sample, risky interactions with MDMA are hardly to be expected.
False declarations and impurities are often found in powders and crystalline samples; it is therefore essential to have these tested in a drug check before consumption!
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Safer Use
Analysis
Have your substances tested in a Drug Checking
Testing
If you do not have the possibility to have substances analysed, always test a small amount to avoid overdoses.
Wait and see
Wait 2 hours after oral intake, as there are always powders / crystals in circulation with unexpected active ingredients, which can have a later onset of action.
Utensils
When snorting or injecting powders, always use your own equipment to avoid infecting yourself or others with diseases.
Disclaimer
If you are in possession of a substance that does not appear on this page, this in no way means that it contains the expected ingredient or that it should be safe. The warnings we publish only refer to the substances listed in our Drug Checking offers, these substances pose a high risk of consumption and should not be consumed. A substance may have the same visual appearance (shape, size, colour, etc.) and yet have different ingredients or a different composition. There is no drug use without risk! Only a complete renunciation of drugs is risk-free! If you still decide to use drugs, you should at least follow the safer use rules.
