Sleeping pills depress the central nervous system. if these drugs are used in higher doses will cause serious side effects, which may lead to death in certain cases. Therefore, a doctor should always be consulted before taking medicine.

The statement refers to the classification according to pharmacological effect of the drug because any drug which will be used to counteract the effect of excess acid in the stomach will be called antacid.
Antacids are the medicinal agents which decreases the excess level of hydrochloric acid in stomach.

A large number of people are suffering from diseases such as diabetes and obesity. These people cannot take normal sugar such as sucrose as it is harmful for them. Therefore, artificial sweeting agents that do not add to the calorie in take of a person are required. For example Aspartame, Alitame, etc. are artifical sweeting agents.