Ephedrine vs. Pseudoephedrine

Ephedrinenoun

A crystalline alkaloid drug C10H15NO obtained from a Chinese ephedra (Ephedra sinica) or synthesized that has the physiological action of epinephrine. It causes constriction of the blood vessels and widening of the bronchial passages and is used in the form of its hydrochloride or sulfate to relieve asthma and hay fever.

Ephedrinenoun

white odorless powdered or crystalline alkaloid from plants of the genus Ephedra (especially Ephedra sinica) or made synthetically; used as a bronchodilator to treat bronchitis and asthma

Ephedrine

Ephedrine is a medication and stimulant. It is often used to prevent low blood pressure during spinal anesthesia.

Pseudoephedrinenoun

(pharmaceutical drug) A sympathomimetic alkaloid commonly used as a decongestant; a chemical compound, an isomer of ephedrine, with the formula C10H15NO.

Pseudoephedrinenoun

poisonous crystalline alkaloid occurring with ephedrine and isomorphic with it

Pseudoephedrine

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.It was first characterized in 1889, by the German chemists Ladenburg and Oelschlägel, who used a sample that had been isolated from Ephedra vulgaris by the Merck pharmaceutical corporation of Darmstadt, Germany.