Methylnaphthidate is a research chemical with very little data on its pharmacological properties, metabolism, and toxicity. It has a limited history of human use and appeared on the research chemical market around 2014. Unlike typical methylphenidate analogs, it displays notable serotonin reuptake inhibition, giving it subjective effects more similar to cocaine or amphetamine. Use precise weighing equipment and start with low doses. Some users report nasal irritation and throat discomfort when insufflated.
Metylonaftydan molecular structure diagram from the DrugsPRO substance library.
Also known as: Hdmp-28, Methylnapthidate
Classification
Chemical: Phenidate
Psychoactive: Stimulant
Tag: Habit-Forming
Tag: Research-Chemical
Tag: substituted phenidate
Tag: Tentative
Effects
Stimulation
Increased Heart Rate
Teeth Grinding
Vasoconstriction
Spontaneous Bodily Sensations
Physical Energy
Focus Enhancement
Motivation Enhancement
Thought Acceleration
Euphoria
Analysis Enhancement
Wakefulness
Increased Music Appreciation
Appetite Suppression
Dehydration
Light Sensitivity
Increased Sexuality
Visual And Auditory Hallucinations
Routes of Administration
Oral
Dosage
Threshold: 8-10 mg
Light: 10-15 mg
Common: 15-30 mg
Strong: 30-50 mg
Heavy: 50 mg
Duration
Onset: 0-0.2 h
Peak: 1.5-2 h
Offset: 1.5-2 h
After Effects: 1-8 h
Insufflated
Dosage
Threshold: 4-8 mg
Light: 10-15 mg
Common: 15-25 mg
Strong: 25-40 mg
Heavy: 40 mg
Duration
Onset: 0.02-0.08 h
Peak: 1-2 h
Offset: 1-2 h
After Effects: 1-2 h
Harm Reduction
Check interactions before mixing substances, pay attention to dose spacing and hydration, and treat all dosage guidance as approximate rather than guaranteed safe.
Sources
Substance data is aggregated from the following public harm-reduction and reference sources.
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Methylnaphthidate - przewodnik po substancji DrugsPRO
Methylnaphthidate: Methylnaphthidate is a research chemical with very little data on its pharmacological properties, metabolism, and toxicity. It has a limited history of human use and appeared on the research chemical market around 2014. Unlike typical methylphenidate analogs, it displays notable s
