Side effects of Aspartame, as posted in another thread...

Toxicity Effects of Aspartame Use

Selection of adverse effects from short-term and/or long-Term use
Note: It often takes at least sixty days without *any* aspartame or nutrasweet to see a significant improvement. Improvement in health is also often accompanied by weight loss. Check all labels very carefully (including vitamins and pharmaceuticals). Look for the word "aspartame" on the label and avoid it. (Also, it is a good idea to avoid "acesulfame-k" or "sunette.") Finally, avoid getting nutrition information from junk food industry PR organizations such as IFIC or organizations that accept large sums of money from the junk and chemical food industry such as the American Dietetic Association.

seizures and convulsions
dizziness
tremors
migraines and severe headaches (Trigger or Cause From Chronic Intake)
memory loss (common toxicity effects)
slurring of speech
confusion
numbness or tingling of extremities
chronic fatigue
depression
insomnia
irritability
panic attacks (common aspartame toxicity reaction)
marked personality changes
phobias
rapid heart beat, tachycardia (another frequent reaction)
asthma
chest pains
hypertension (high blood pressure)
nausea or vomitting
diarrhea
abdominal pain
swallowing pain
itching
hives / urticaria
other allergic reactions
blood sugar control problems (e.g., hypoglycemia or hyperglycemia)
menstrual cramps and other menstraul problems or changes
impotency and sexual problems
food cravings
weight gain
hair loss / baldness or thinning of hair
burning urination & other urination problems
excessive thirst or excessive hunger
bloating, edema (fluid retention)
infection susceptibility
joint pain
brain cancer (Pre-approval studies in animals)
death

Aspartame Disease Mimmicks Symptoms or Worsens the Following Diseases

fibromyalgia
arthritis
multiple sclerosis (MS)
parkinson's disease
lupus
multiple chemical sensitivities (MCS)
diabetes and diabetic Complications
epilepsy
alzheimer's disease
birth defects
chronic fatigue syndrome
lymphoma
lyme disease
attention deficit disorder (ADD and ADHD)
panic disorder
depression and other psychological disorders