Aspartame is a sweetener instead of sugar that is mostly be found and commonly used as an ingredient in food and beverages. Aspartame in the market made from Aspartic Acid and Phenylalanine which is a natural amino acid mixed with methyl ester. Aspartic acid is an amino acid that the body can produce on its own. Phenylalanine is an essential amino acid that must only be obtained from food. When aspartame enters the body, it decomposes into methanol, which expert reveal that if the body receives too much methanol, it can be toxic. This is because methanol may convert to formaldehyde which has a negative effect on health.

The USFDA recommends that no more than 50 milligrams per kilogram of body weight. The European food Safety Authority (EFSA) recommends that is should not exceed 40 milligrams per 1 kilogram of body weight.