Tobacco: Reduces appetite and can cause nausea and vomiting; increases alertness
Alcohol:
Impairs concentration, slows reflexes, impairs reaction time, reduces coordination, and causes drowsiness when used in excess
Illegal Drugs: Marijuana impairs memory, concentration, perception, and movement; cocaine causes dizziness, headache, anxiety, insomnia, depression, and increased heart rate
Medicine: Medicines usually are safe and effective, harmful effects may occur in some people. OTC's typically do not cause serious side effects when taken as directed on the product's label. It is important to read the label to find out the ingredients, side effects, warnings, and when to consult a doctor.
