Pharmacognosy - medicinal plants (herbs)

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Quina (Cinchona) and Tropane

Quina and Tropane alkaloids.  Quinine. Quinidine, Atropine, Cocaine and related alkaloids.

Quina alkaloids

It contains more than 20 alkaloids, those with the most therapeutic importance are:

Effective antipyretic whose use dates back over 350 years. It was the only remedy against malaria for many years.


Indicated for supraventricular and ventricular arrhythmias. The cinchona alkaloids act over the striated muscle.


Tropane alkaloids

These alkaloids are within two groups which have chemical similarities to tropane.

• Atropine and related alkaloids.

• Cocaine and related alkaloids.

Potato flowers (Solanum tuberosum)

The most recognized in the official pharmacopoeia are:

Atropa belladonna alkaloid. Antispasmodic and coadyuvant to general anesthesia because it reduces gastric secretion, salivary and tracheobronchial.

Used as antiemetic in chemotherapy-induced disorders.


It has properties of local anesthesia and vasoconstriction. Its current derivatives possess little toxicity.


It has the same properties as the atropine.


It is a racemic mixture with atropine that produces a duplicate effect of atropine in the gastric secretions.


Is less potent than atropine but its effect lasts longer.

See also

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