Phenylalanine can depress serotonin (a chemical released from a nerve cell) that has many benefits, such as helping you sleep. Aspartic acid is an excitotoxin that can overstimulate neurons in the brain, causing them to die.
And then there is methanol, more commonly known as wood alcohol. Although methanol works great for relieving the pain of cuts and for cleaning your windshield, it’s probably not a good idea to be putting it in your body.
Aspartame has been associated with 92 different health side effects, including vision damage, depression, high blood pressure, insomnia and PMS. If these facts are not enough to convince you, consider that aspartame is often made with genetically modified organisms, which are associated with a laundry list of health problems.