Kopi Talk - Read all food labels before consume or drink.

Most consumers don't know that too much Phenylalanine is a neurotoxin and excites the neurons in the brain to the point of cellular death. The 1976 Groliers encyclopedia states cancer cannot live without phenylalanine. Phenylalanine makes up 50% of aspartame.
Phenylalanine is one of the essential amino acids found in proteins, Nature provides amino acids in combination; only man isolates them for processing purposes.
Phenylalanine is found naturally in foods such as eggs, milk, bananas, and meat. If you are PKU (Phenylketonuric) or sensitive to phenylalanine, you will react to the phenylalanine in aspartame. You may want to get a blood test to check for this condition. Over the past 20 years, humans have become more aware of PKU reactions because human beings began using isolated phenylalanine to the degree it is harmful to some individuals, many as aspartame side effects. My suggestion would be to research PKU and phenylalanine extensively. Phenylalanine can be very harmful to diabetics.
ADD/ADHD, emotional and behavioral disorders can all be triggered by too much Phenylalanine in the daily diet. If you are one in ten thousand people who are PKU or carry the PKU gene, Phenylalanine can cause irreversible brain damage and death, especially when used in high quantities or during pregnancy. Phenylalanine is 50% of aspartame, and to the degree humans consume diet products, Phenylalanine levels are reaching a dangerous peak.
It is important to learn about the ingredients within your foods, especially isolated amino acids like Phenylalanine. They are in combination within nature for a reason - they don't belong in isolated form for the healthy human diet. Finally, all individuals with food allergies and intolerances are responsible for reading the labels and confirming ingredients of all products they intend to use.