Is Duromine Speed or Not?

Is Duromine an Amphetamine

 - Updated on August 4, 2022

Duromine is an effective and safe drug used for weight management in case of obesity.
The main component of the drug is a central nervous system stimulant and may have the same effect as speed. So, is Duromine like speed? We will debunk the myth.

Why is Duromine a Legal Speed?

The main component of the drug is phentermine, which has a mechanism of action similar to stimulants. It is related to amphetamine, even though their chemical structures are different.

Duromine capsules contain the active ingredient – Phentermine Hydrochloride. Apart from it, there are other components and a resin for a slow-release effect.

The combined effect of all these ingredients helps patients lose weight and feel cheerful and full of energy. Hence it was nicknamed “Duromine legal speed.”

Is Duromine an Amphetamine?

No, it is not. Duromine is an amphetamine-like medication that affects the same brain receptors and produces similar effects. However, it is not the same as crystal meth or any other amphetamines.

Duromine stimulates the release of neurotransmitters such as norepinephrine, serotonin, and a minimal amount of dopamine.

Duromine and amphetamine have similar effects, including appetite suppression, a surge of energy, restlessness, and insomnia.

You shouldn’t drink alcohol or take recreational drugs while using Duromine to prevent possible side effects. Also, remember that the medication may affect your ability to concentrate when you are driving.

How Long Does Duromine Take to Kick In

We’ve already discussed that the active ingredient of Duromine (phentermine) works similarly to amphetamines suppressing appetite, stimulating the central nervous system, and increasing blood pressure.

Now, let’s answer the question, “How long does it take for Duromine to kick in?” After ingestion of Duromine, phentermine is absorbed through the gastrointestinal tract. It reaches peak concentrations in the blood in 3-4 hours. By this time, you can already feel the effect of the drug.

You should know that phentermine can interact with some drugs. They may either decrease the effect, affect its duration or increase the possibility of adverse reactions.

We never fail to mention that you shouldn’t mix Duromine with alcohol or drugs!

How Long Does Duromine Stay in Your System?

The half-life of phentermine is reported to be about 20 hours. How long does Duromine take to leave your system? It will be out of your system in 4-5 days, depending on your body’s metabolism.

If you take a drug test, remember that phentermine may give a false-positive result. It can be detected in the following tests:

  • blood test for up to 24 hours;
  • SAMSHA 5-Panel’s Amphetamine Test for 1-4 days;
  • hair follicle drug test for several months.

You shouldn’t panic. A positive result indicates that a confirmatory test should be done to prove that it was phentermine and not amphetamine or methamphetamine. Then the original test result will be considered a false positive.


Duromine is not a speed but a weight-loss medication. Doctors prescribe it to obese patients with other weight-related medical problems, including high cholesterol levels, high blood pressure, or diabetes. Even though Duromine increases norepinephrine, dopamine, and serotonin levels, producing an effect similar to amphetamine, it is not a recreational drug.

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