Ritalin: 20 mg sustained-release (SR) tablets
Ephedrine Sulphate (1932), Ephedrine Compound (1932), and Swan-Myers Ephedrine Inhalant No. 66 (circa 1940)
A chart comparing the chemical structures of different amphetamine derivatives
Ephedrine tablets
Roasted coffee beans, a common source of caffeine.
Proposed biosynthetic pathway of ephedrine from L -phenylalanine and pyruvic acid.
Tablets containing MDMA
The four stereoisomers of ephedrine
Lines of illicit cocaine, used as a recreational stimulant
Catha edulis

Stimulants (also often referred to as psychostimulants or colloquially as uppers) is an overarching term that covers many drugs including those that increase activity of the central nervous system and the body, drugs that are pleasurable and invigorating, or drugs that have sympathomimetic effects.

- Stimulant

Ephedrine is a central nervous system (CNS) stimulant that is often used to prevent low blood pressure during anesthesia.

- Ephedrine

Dopaminergic stimulants such as amphetamine, ephedrine, and propylhexedrine work by causing the release of dopamine and norepinephrine, along with (in some cases) blocking the reuptake of these neurotransmitters.

- Sympathomimetic drug

Thus, all sympathomimetic amines fall into the larger group of stimulants (see psychoactive drug chart).

- Sympathomimetic drug

Examples of substituted amphetamines are amphetamine (itself), methamphetamine, ephedrine, cathinone, phentermine, mephentermine, bupropion, methoxyphenamine, selegiline, amfepramone, pyrovalerone, MDMA (ecstasy), and DOM (STP).

- Stimulant

Ephedrine is a sympathomimetic amine and substituted amphetamine.

- Ephedrine
Ritalin: 20 mg sustained-release (SR) tablets

2 related topics with Alpha


Two pairs of enantiomers: ephedrine (top) and pseudoephedrine (bottom)


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Two pairs of enantiomers: ephedrine (top) and pseudoephedrine (bottom)
A warning at an Australian pharmacy

Pseudoephedrine (PSE) is a sympathomimetic drug of the phenethylamine and amphetamine chemical classes.

It may be used as a nasal/sinus decongestant, as a stimulant, or as a wakefulness-promoting agent in higher doses.

Pseudoephedrine is a diastereomer of ephedrine and is readily reduced into methamphetamine or oxidized into methcathinone.


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Desoxyn (Methamphetamine Hydrochloride) 100 tablets.
A 2010 study ranking various illegal and legal drugs based on statements by drug-harm experts. Methamphetamine was found to be the fourth most damaging to society.
A suspected case of meth mouth
This diagram depicts the neuroimmune mechanisms that mediate methamphetamine-induced neurodegeneration in the human brain. The NF-κB-mediated neuroimmune response to methamphetamine use which results in the increased permeability of the blood–brain barrier arises through its binding at and activation of sigma receptors, the increased production of reactive oxygen species (ROS), reactive nitrogen species (RNS), and damage-associated molecular pattern molecules (DAMPs), the dysregulation of glutamate transporters (specifically, EAAT1 and EAAT2) and glucose metabolism, and excessive Ca2+ ion influx in glial cells and dopamine neurons.
This illustration depicts the normal operation of the dopaminergic terminal to the left, and the dopaminergic terminal in the presence of methamphetamine to the right. Methamphetamine reverses the action of the dopamine transporter (DAT) by activating TAAR1 (not shown). TAAR1 activation also causes some of the dopamine transporters to move into the presynaptic neuron and cease transport (not shown). At VMAT2 (labeled VMAT), methamphetamine causes dopamine efflux (release).
Shards of pure methamphetamine hydrochloride, also known as crystal meth
Pervitin, a methamphetamine brand used by German soldiers during World War II, was dispensed in these tablet containers.
U.S. drug overdose related fatalities in 2017 were 70,200, including 10,333 of those related to psychostimulants (including methamphetamine).

Methamphetamine (contracted from N-methylamphetamine) is a potent central nervous system (CNS) stimulant that is mainly used as a recreational drug and less commonly as a second-line treatment for attention deficit hyperactivity disorder and obesity.

Among these metabolites, the active sympathomimetics are amphetamine, 4‑hydroxyamphetamine, 4‑hydroxynorephedrine, 4-hydroxymethamphetamine, and norephedrine.

Shortly after, methamphetamine was synthesized from ephedrine in 1893 by Japanese chemist Nagai Nagayoshi.