Sugarless candy
If you have dry mouth, try sucking on a piece of sugarless candy or chew sugarless gum to stimulate saliva flow. The saliva will help to wash away food debris and bacteria that cause bad breath.
Clean your tongue
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Bacteria stick to your taste buds, then release a waste byproduct that causes a gross stench. When you use a tongue scraper or brush your tongue, you remove any bacteria, byproducts from the bacteria, or plaque that form.
Mint and parsley
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Chewing parsley or mint leaves has been a remedy used for thousands of years. These herbs are especially good if garlic and onions are the source of your bad breath. Parsley is very high in chlorophyll. Chew a few parsley sprigs dipped in vinegar for immediate relief. If you swallow the leaves after chewing them they will be digested and continue to provide breath freshness for quite a while. These plants seem to reduce the production of intestinal gas by promoting better digestion.