HDMP-28

Methylnaphthidate (also known as HDMP-28) is a novel synthetic stimulant substance of the substituted phenidate chemical class. It is a structural analog of the commonly prescribed ADHD drug methylphenidate (e.g. Ritalin, Concerta) that produces moderately stimulating effects when administered.

Also known as: Methylnaphtidate, Methylnaphthidate

Classification

Chemical: Phenidate
Psychoactive: Stimulant
Tag: Habit-Forming
Tag: Research-Chemical
Tag: substituted phenidate
Tag: Tentative

Effects

Increased Heart Rate
Stimulation
Teeth Grinding
Vasoconstriction
Spontaneous Bodily Sensations
Pupil Dilation
Talkativeness
Alertness Enhancement
Motivation Enhancement
Thought Acceleration
Analysis Enhancement
Cognitive Euphoria
Light Sensitivity
Dehydration
Appetite Suppression
Increased Sexuality
Visual And Auditory Hallucinations
Increased Music Appreciation

Routes of Administration

Oral

Dosage

Common: 15-30 mg
Light: 10-15 mg
Strong: 30-50 mg
Threshold: 8-10 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

Heavy: 28 mg
Common: 8-14 mg
Light: 4-8 mg
Strong: 14-28 mg

Duration

Onset: 0.1 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.

Links

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