What You Will Learn!
- The students will get a wide picture of Dyes.
- The students will learn about the Medicines found naturally in environment.
- The students will have a deep knowledge about the Ceramics..
- The students will know about the importance of Cosmetics.
Description
Chemical substances of natural or synthetic origin which are used for
curing diseases and reducing suffering from pain are called medicines or
drugs. The branch of science which deals with the treatment of diseases
using suitable chemicals is known as chemotherapy.
A medicine is a chemical substance which cure the disease is safe to use
has negligible toxicity and does not cause addiction. In contrast, a drug is
a chemical substance which also cures the diseases but habit forming
causes addiction and serious side effects.
Antacids are drugs which raise the pH to an appropriate level in the
stomach. Some basic compounds like sodium bicarbonate, magnesium
carbonate, aluminium hydroxide and magnesium hydroxide gel act as
antacids by neutralizing hydronium ions in stomach acid.
The drugs cimetidine (Tegamet) and ranitidine (Zantac) act as antacids by
preventing the interaction of histamine with the receptors present in the
stomach wall resulting in release of lesser amount of acid.
Omeprazole and lansoprazole are also marketed as antacids.
The drugs which act on the central nervous systems (CNS) and help in
reducing stress and fatigue by inducing a sense of well being are called
tranquillizers. The most commonly used tranquillizers are barbituric acid
and its 5, 5 – disubstituted derivatives such as veronal, luminal, seconal
amytal and membutal.
Cleordiazepoxide and meprobante are relatively mild tranquillizers and
hence are used for relieving tension. Equanil is used for reducing
depression and hypertension.
Reserpine isolated from the Indian plant Rauwolfia serpentine is also a
powerful tranquillizer. It also slows down the pulse rate and lowers the
blood pressure.
Who Should Attend!
- For the Beginners and students of twelfth standard.
