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4F-MPH is a synthetic stimulant that is commonly used as a study aid or productivity enhancer. It is a research chemical that is structurally similar to the prescription drug methylphenidate, which is commonly used to treat attention deficit hyperactivity disorder (ADHD). 4F-MPH is a relatively new substance, and as such, there is limited scientific research on its effects and risks.

Chemical Properties

4F-MPH is a white or off-white powder that is soluble in organic solvents and insoluble in water. Its chemical formula is C14H18FNO2, and it has a molecular weight of 251.3 g/mol. 4F-MPH is a phenethylamine and a piperidine derivative, and it is classified as a central nervous system (CNS) stimulant.

Pharmacology and Effects

The exact pharmacology of 4F-MPH is not well understood, but it is believed to work by increasing the levels of dopamine and norepinephrine in the brain. These are neurotransmitters that are responsible for regulating attention, focus, and mood. Like other stimulants, 4F-MPH can cause an increase in heart rate, blood pressure, and body temperature. It can also lead to a decrease in appetite and an increase in wakefulness.

Physical Effects

The physical effects of 4F-MPH are similar to those of other stimulants. These can include increased heart rate, blood pressure, and body temperature. Other physical effects may include sweating, dry mouth, and vasoconstriction. Vasoconstriction can cause a decrease in blood flow to certain parts of the body, which can lead to numbness or tingling sensations.

Psychological Effects

The psychological effects of 4F-MPH can vary depending on the dose and individual tolerance. At low doses, it may produce a feeling of euphoria, increased energy, and motivation. At higher doses, it can cause anxiety, paranoia, and even psychosis. Long-term use of 4F-MPH can also lead to tolerance, dependence, and addiction.

Risks and Precautions

Like other research chemicals, 4F-MPH is not approved for human consumption and is not intended for medical use. Its long-term effects and risks are not well understood, and it may have harmful effects on physical and mental health. It is important to use caution when handling 4F-MPH and to only use it under the guidance of a qualified medical professional.

Overdose and Toxicity

Overdose and toxicity are serious risks associated with the use of 4F-MPH. Ingesting large amounts of the substance can cause seizures, cardiovascular problems, and even death. It is important to be aware of the signs of overdose, such as chest pain, difficulty breathing, and loss of consciousness, and to seek medical attention immediately if they occur.

Legal Status

4F-MPH is a controlled substance in many countries, including Sweden. It is classified as a Schedule II substance in the United States, meaning that it has a high potential for abuse and dependence. Possession and distribution of 4F-MPH may be illegal in certain jurisdictions.


100g, 200g, 300g, 500g


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