Methylphenidate
Ritalin, Concerta
Stimulant
Prescription
A
T1 Full
Acute
Prescription / Controlled Substance
Requires a valid prescription. Obtaining or using without authorization may be illegal. For educational purposes only.
US: controlledEU: prescription
First-line ADHD medication. Enhances dopamine and norepinephrine in prefrontal cortex.
Mechanism of Action
Blocks dopamine and norepinephrine transporters (DAT, NET), increasing synaptic concentrations.
Usage Tips
- Start low, titrate slowly
- Take early to avoid insomnia
- Monitor heart rate and blood pressure
- Drug holidays may preserve efficacy
Contraindications
- Glaucoma
- Severe anxiety
- MAOIs within 14 days
- Cardiovascular disease
- History of substance abuse
Performance Profile
Physical Energy
A+3
Mental Stamina
A+4
Alertness
A+4
Motivation
A+3
Dosage
5mg
min
20mg
60mg
max
Timing
Best time
Morning
30 min
onset
4 hr
duration
Half-life
3 hrSafety & Legal
6/10
Generally safe
Legal Status
Controlled
USPrescription
EUmild
moderate
severe
Decreased appetite
>10%moderate
Insomnia
>10%moderate
Increased heart rate
1-10%mild
Anxiety
1-10%moderate