Sometimes people complain that they feel different tastes, and each of them arises for a number of reasons.
There are times when a person feels in his mouth the taste of bitterness, metal, and also, salty or sour taste.
In most cases, they are caused by malnutrition. If you often eat fatty, fried and smoked foods, as well as alcohol, then it is not surprising if there is a feeling of bitterness.
The fact is that in such cases a large amount of bile enters the esophagus and, so that this does not happen, give up such food. The sensations of metal in the mouth can indicate diseases of organs such as the liver, kidneys, stomach, and sometimes it is caused due to metal dentures made of poor-quality materials.
If you have high acidity, then you can have an unpleasant, slightly sour taste, and to get rid of it, you need to have a course of treatment. In any case, it is necessary to monitor the condition of your oral cavity, thus, frequent use of toothpaste is not recommended, but rinsing is sufficient.Source: www.goodshelp.com