What is a substance other than food that changes the structure or function of the body or mind

Which of the following is not a safety rule in strength training

Bulimia nervosa is characterized by a. a refusal to eat enough food to maintain normal, healthy body weight and/or the use of measures to produce severe weight loss. b. high fat intake and low level of physical activity. c. alternating binge eating and purging through vomiting, laxatives, or diuretics. d. normal food consumption interrupted by episodes of high consumption, resulting in obesity.

Are there any flash cards to with the top 200 drugs for pharmacy tech?