Methylphenidate

Stimulant

An ADHD stimulant that feels sharper and shorter than amphetamine for most people. Higher doses produce anxiety and cardiovascular strain rather than better effects.

ConcertaMethylinRitalinEquasym XLmphritalinconcertabiphentin

Dose and effect data: PsychonautWiki (CC BY-SA 4.0) and TripSit (PolyForm Noncommercial 1.0.0).

Before you dose

⚠This substance's dose is not reliably weight-scaled - the ranges shown are population figures. Sensitivity varies far more between people than body mass explains.

⚠This substance has combinations that are life-threatening. Check the Interactions tab before mixing anything.

Dose

Published population range

Threshold1 mg

Light2–10 mg

Common10–30 mg

Strong30–60 mg

Heavy / risk zone≥ 60 mg

No weight-based model for this substance — published ranges only.

Check an amount you already have

Timeline (insufflated)

Onset5–20 minutes

Come-up15–40 minutes

Peak30–45 minutes

Offset120–240 minutes

Afterglow60–240 minutes

Total120–240 minutes

Bars show relative time in each phase, scaled to the total duration. Each phase keeps its colour in the list above.

Expected effects

Sharper focus and alertness
Reduced fatigue
Mild euphoria at higher doses

Possible side effects

Anxiety and jitteriness
Appetite loss
Insomnia
Raised heart rate and blood pressure
Crash
Dependence

Harm reduction

Test your substance. Cocaine, amphetamine and MDMA powders are routinely cut with fentanyl or nitazenes, and stimulant pills are frequently counterfeits.
Do not mix stimulants with each other, with alcohol, or with MAOIs, SSRIs or tramadol - the cardiovascular and serotonin risks compound.
Watch body temperature. Overheating and dehydration cause more stimulant emergencies than heart attacks do. Take breaks, cool down with water and air, and sip (do not gulp) fluids.
Eat and sleep. Sleep deprivation plus stimulants is the standard route into stimulant psychosis.
Do not re-dose compulsively. Set a maximum before you start, and give it to someone else to hold you to.
Chest pain, severe headache, one-sided weakness, slurred speech or fainting are medical emergencies. Call for help immediately.
Nasal use damages the septum and sinuses; chronic use causes permanent damage that does not heal.

Identify what you have

Marquis (TripSit reference)Moderate orange yellow

Marquis (reacts)light orange (75)

Mandelin (reacts)short reddish (234)

Liebermann (reacts)yellow - orange (89)

Froehde (reacts)no color change -> Tan (78)

Simon's (reacts)pale violet (15)

Hofmannno color change (137)

Zimmermann (reacts)slow purple (22)

Scottno color change (65)

Reagent tests show what a substance probably is, not how pure it is or what else is in the mix. Fentanyl and nitazene test strips are the only reliable check for those, and quantitative lab testing is better than both.