(1) Sarpgandha:
Rauwolfia serpentina. Root gives reserpine alkaloid which is used for blood pressure, snake bite and mental disorders.
(2) Opium:
(afeem) Papaver somniferum. Fruit (capsule) gives morphine, codine. Which is narcotic, sedative and given in relieving pain.
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(3) Quinine:
Cinchona officinalis, Calisaya. Bark used for malaria. Coptis teeta of Arunachal Pradesh and Artemesia annua of Uttarakhand also yield antimalarial drugs.
(4) Belladona:
Atropa belladona. Dried leaves and roots are useful. Leaves have atropine and Hyoscymus alkaloid. It is used as Narcotic, diuretic, antispasmodic, Leaves are stimulant of CNS relieving pain.
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(5) Datura:
Datura staramonium. Fruit juice is important for removing dandruff, for bronchital ailments.
(6) Amla:
Emblica officinalis. Fruits are diuretic laxative for hoemeorage, used in diarrhea, dysentry.
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(7) Kuchla:
Strycnos nux-vomica. Seed are used as a source for alkaloid strichnum. Used in Paralysis and mental disorder.
(8) Senna:
Leaves and pods of Cassica angustifolia and C. acutifolia are purgative and anthelmintic.
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(9) Isabgol:
Seeds husks of Plantago ovala for constipation and gastric ulcers.
(10) Digitalis:
Leaves otdigitalis purpurea and D. lanara as cardiac stimulant, relieving dropsy and stimulating renal secretions.
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(11) Aconite:
Roots of Aconitum napellus (highly poisonous) are used for cholera and leprosy.
(12) Liquorice:
Root of Glycyrrhiza glabra is used for cough and bronchitis.
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(13) Santonin:
Flowers of Artemesia cina and A. maritima yield anthelminthetic drug. Artemesin is antimalarial drug obtained from A. annua.
(14) Nux-vomica:
Fruits and seeds of Stryclirous nux-vomica.
(15) Dioscorea (Yam):
Its tubers are edible. The extract diosgenin is starting point of several corticosteroid drugs and contraceptive. Dioscorea is one of the most over-exploited plant.
(16) Vasaca:
Leaves of Adhatoda vasica yield an expectorant drug against bronchitis.
(17) Taxol:
Anticancer drug got from Taxus baccata (gymnosperm). Podophyllum hexandrum also contain anticancer ingredients.