Tobacco is also called Nicotiana tabacum linn. It is composed  chemically of Nicotine, seed oil, phenol, polyphenol and tannin. The leaves are mostly used.

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Their health benefits include:-
-They are laxative, tonic, narcotics, carminative, antiemintic, antispasmodic and sedative.
-They have a sharp bitter taste and are useful in bronchitis, asthma, care of teeth and skin disease.
-Decoction of leaves is locally applied for muscle relaxation, strangulated hernia and orchitis.
-Ointments, made by simmering leaves in lard has been used in curing old ulcers and painful tumours.
history of tobacco
-Tobacco owes its value to the properties of alkaoid nicotine which is a most energetic poison, a powerful sedative and antispasmodic

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