01 · How it works
Origins & Action
Methylphenidate blocks dopamine and norepinephrine transporters, increasing catecholamines in the synapse without directly reversing transporter flow like amphetamines.
02 · Immediate effects
Recognize the effects
Signs of Use
- Dilated pupils
- Motor tics or facial twitching
- Fast heart rate and high blood pressure
- Pacing and restlessness
- Appetite suppression
Short Term
- Heightened vigilance and focus
- Euphoria
- Vasoconstriction
- Dehydration and low appetite
- Anxiety and irritability
Long Term
- Tolerance and escalating use
- Insomnia
- Tic disorders
- Arrhythmias and stroke risk
- Dependence and depression after stopping
03 · Long-term consequences
Stimulant toxicity
Crushing or injecting tablets can expose the body to insoluble fillers and increase cardiovascular and pulmonary injury.
Medical emergency
Identifying an emergency
Severe hypertension, chest pain, extreme agitation, hyperthermia, hallucinations, or seizures require 911.
Emergency: Do not use stimulants to self-treat chest pain or severe symptoms