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Ointment
An ointment is a viscous semisolid preparation used topically on a variety of body surfaces. These include the skin and the mucus membranes of the eye (an eye ointment), vagina, anus, and nose. An ointment may or may not be medicated.
The vehicle of an ointment is known as ointment base. The choice of a base depends upon the clinical indication for the ointment, and the different types of ointment bases are:
1. Hydrocarbon bases. e.g. hard paraffin, soft paraffin.
2. Absorption bases. e.g. wool fat, beewax.
3. Water soluble bases. e.g. macrogols 200,300,400.
The medicaments are dispersed in the base and later they get divided after the drug penetration into the living cells of skin.
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