Q: What are tinctures?
Ans: These are alcoholic or hydroalcoholic solutions made from materials of plant origin or from chemical substances. Most of the tinctures are prepared by percolation or by maceration.
Q: What is the method generally used for the preparation of tinctures?
Ans: Herbs are placed in a container and a spirit containing 40% pure ethanol is added. The jar is placed for 2-3 weeks and shaken occasionally so that the concentration can be increased of the solution.
Q: What are the examples of tincture?
Ans: Iodine tincture, alcoholic tincture, digitalis tincture, belladonna tincture
Q: What do you know about iodine tincture?
Ans: It is a hydroalcoholic solution having
• Elemental iodine i.e. 2%,
• Potassium iodide i.e. 2.4%, so that the dissolution is facilitated and
• Alcohol i.e. 47%.
Q: What is the use of iodine tincture?
Ans: It is used as an antiseptic/germicide for scratches and cuts on the surface of the skin. It has been used as a skin disinfectant before surgery but is now largely replaced by organic forms of iodine.
Q: What do you know about belladonna tincture?
Ans: It is a green hydroalcoholic liquid having the alkaloids scopolamine and atropine and other substances that are extracted from the leaves of Atropa belladonna.
Q: What is the use of belladonna tincture?
Ans: Earlier it was widely used in treatment of ulcer or the palliative treatment of diarrhea, either alone or in combination with antacids and insoluble clays.
Q: What do you mean by palliative treatment?
Ans: It means the relief of mental and physical pain or symptoms without actually treating the causes, especially in patients suffering from a fatal (dying) illness.
(These Viva type Questions can help you in the preparation of pharmacy exams)