1. Halcion was first sold in this country in 1982 at dosages up to half a milligram for 14 days use.

2. Manifestations of Halcion overdosage include extensions of its pharmacological activity, namely somnolence and hypnosis.

3. Halcion is a potent short-acting hypnotic agent, which produces its hypnotic activity from the first night of administration.

4. Most of the psychotic episodes experienced by people using Halcion involved high doses for extended periods of time.

5. People who took prescription drugs called benzodiazepines (Valium, Xanax, Halcion) to fall asleep were 50 percent more likely to have heartburn at night than those who didn't in one large survey.