methylphenidate
2 interactions related to methylphenidate
methylphenidate + st. john's wort
Methylphenidate inhibits dopamine and norepinephrine reuptake and modestly affects serotonin signaling. St. John's Wort adds reuptake inhibition of serotonin, dopamine, and norepinephrine, plus weak MAO inhibition. Combination risks serotonin syndrome and a published case series suggests reduced methylphenidate efficacy for ADHD.
energy drinks + stimulants
Energy drinks layer high-dose caffeine, taurine, guarana, and ginseng on top of any prescription or recreational stimulant (amphetamine, methylphenidate, modafinil, pseudoephedrine, cocaine), producing additive sympathomimetic effects on heart rate, blood pressure, and CNS arousal. The combined load increases the risk of tachyarrhythmia, hypertensive crisis, severe insomnia, and anxiety.