Which of the following characteristics describes barbiturates?
A . They are used by both physicians and veterinarians to induce sedation and sleep.
B . Larger doses cause sleep 20 to 60 minutes after oral administration.
C . Some individuals may experience a sense of excitement before sedation takes effect.
D . Barbiturates are classified as ultra-short, short, intermediate, and long-acting.
E . All of the above.
F . None of the above.
Answer: E