Throat lozenge
medicated tablet
A throat lozenge (also known as a cough drop, sore throat sweet, troche, cachou, pastille or cough sweet) is a small, typically medicated tablet intended to be dissolved slowly in the mouth to temporarily stop coughs, lubricate, and soothe irritated tissues of the throat (usually due to a sore throat or strep throat), possibly from the common cold or influenza. Cough tablets have taken the name lozenge, based on their original shape, a diamond.
Ingredients
Some throat lozenges contain active ingredients such as benzocaine (anaesthetic), or amylmetacresol (mild antiseptic) or 2,4-Dichlorobenzyl alcohol (mild antiseptic) or 4-Hexylresorcinol (anaesthetic, antiseptic) or dextromethorphan (cough suppressant).
Many varieties such as Halls contain menthol, peppermint oil and/or spearmint as their active ingredient(s). Some may contain other essential oils (generally "cooling" ones) such as eucalyptus oil and methyl salicylate.
Non-menthol throat lozenges generally use either zinc gluconate glycine or pectin as an oral demulcent. Honey lozenges are also available.
The purpose of the throat lozenge is to calm the irritation that may be felt in the throat while swallowing, breathing, or even drinking certain fluids. However, one study found that excessive use of menthol cough drops can prolong coughs rather than relieve them.
History
Sweets to soothe the throat are thought to date back to 1000 BC in Egypt's Twentieth Dynasty, when they were made from honey flavored with citrus, herbs, and spices.
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