Active constituents of plants (Vegetables)

Active constituents of plants (Vegetables):- Active constituents of plants are those which are responsible wholly or partially for pharmacological action of the drug.

The pharmacologically active constituents of plants are:

                    i.       Alkaloids.

                   ii.        Glycosides.

                  iii.         Fixed oil and volatile oils.

                  iv.         Antibiotics.

                  v.           Tannins.

                  vi.         Carbohydrates.

 

            

Active principle	Source	Drugs	Clinical uses
Glycosides	Digitalis purpura (plants of foxglove family)	Digoxin, Digitoxin, Ouabain.	As cardio-tonic agent
Alkaloids	Atropa belladona	Atropine	Used as analgesic and anti-inflammatory agent.
	Papaver somniferum. Claviceps purpurea.	Morphine, Ergotamine, Ergonovine.	As analgesic agent. Used in migraine. As oxytocic agent.
Oil	Olea europaea	Olive oil	As an emollient in treating skin disease.
	Ricinus communis	Castor oil , Peppermint oil.	As laxative, emollient.
Tannin	Bark of plant (nutgall) (1)  Tea  (2) Coffee	Tincture of Catechu	Used as astringent, antidote of poison, topical haemostatic and constipating agent.