Ethylphenidate

Stimulant

Potent psychostimulant, similar to Methylphenidate. Note: Ethylphenidate should NOT be insufflated as it is known to be highly caustic and will cause serious harm to your nasal septum, even with light usage.

EPHeph

Dose and effect data: PsychonautWiki (CC BY-SA 4.0) and TripSit (PolyForm Noncommercial 1.0.0). Less-used substance: fewer independent sources, so treat these numbers with extra caution.

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

Threshold10 mg

Light20–40 mg

Common40–80 mg

Strong80–120 mg

Heavy / risk zone≥ 120 mg

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

Check an amount you already have

Timeline (oral)

Onset40–120 minutes

Total240–420 minutes

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

Expected effects

Focus/mental clarity
Abstract thinking
Euphoria
Stimulation
Increased music appreciation
Warm fuzzy body high
Increased desire to talk
Wakefulness
Increased sex drive
High blood pressure
Compulsion to redose

Possible side effects

Chest pain
Vasoconstriction
Jaw tension
Restlessness
Paranoia

Known toxicity

exact toxic dosage is unknown

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

Marquisfizzes clear (254)

Meckeno color change (221)

Mandelinno color change (139)

Liebermannno color change (73)

Froehdeno color change (241)

Morris (reacts)blue particles (25)

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.