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4-MPH (4-methylphenidate) is a stimulant drug that is used as a medication for the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy. It is a close structural analog of methylphenidate, also known as Ritalin, and has similar effects on the brain and body. 4-MPH is classified as a Schedule II controlled substance in the United States and is regulated by many countries around the world.

Chemical Properties

4-MPH has a molecular formula of C14H19NO2 and a molar mass of 233.31 g/mol. It is a white, crystalline powder that is soluble in water, ethanol, and chloroform. The melting point of 4-MPH is approximately 98-99°C.


4-MPH acts primarily as a dopamine and norepinephrine reuptake inhibitor, similar to methylphenidate. It enhances the levels of these neurotransmitters in the brain, leading to increased attention, focus, and wakefulness. It also has mild effects on serotonin, but to a much lesser extent than methylphenidate.


The effects of 4-MPH are similar to those of methylphenidate, but with a slightly slower onset and longer duration. The drug produces feelings of increased alertness, focus, and energy. It can also increase heart rate, blood pressure, and body temperature. In higher doses, 4-MPH can cause euphoria and a sense of well-being.

Side Effects

Like other stimulant drugs, 4-MPH can cause a range of side effects, including:

  • Insomnia
  • Anxiety
  • Restlessness
  • Headaches
  • Dizziness
  • Nausea
  • Loss of appetite
  • Weight loss

Long-term use of 4-MPH can lead to tolerance, dependence, and addiction. It can also cause cardiovascular problems, such as hypertension and tachycardia.

Legal Status

4-MPH is a controlled substance in many countries around the world. In the United States, it is classified as a Schedule II drug under the Controlled Substances Act, meaning it has a high potential for abuse and dependence.


4-MPH is a stimulant drug that is used for the treatment of ADHD and narcolepsy. It has a similar chemical structure and pharmacological profile to methylphenidate. The drug produces effects such as increased focus and wakefulness, but can also cause a range of side effects and health problems. As a controlled substance, 4-MPH is subject to strict regulations and should only be used under medical supervision.


100g, 200g, 300g, 500g


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