Some sleeping pills that come in tablet form are diazepam, or Valium, Darvocet, Ambien and Lunesta, according to RxList, WebMD and Drugs.com. Lunesta, or eszopiclone, is offered in the form of a round blue or white tablet, as of 2105. It comes in 1-milligram or 2-milligram doses.
Ambien, or zolipdem, is a sedative-hypnotic that is taken for short periods of time. It is an oblong tablet that is either white or pink, notes WebMD. The pink tablet contains 5 milligrams, while the white one has 10 milligrams.
Valium is prescribed mostly for anxiety and to ease the pain of muscle spasms or alcohol withdrawal, but is also used as a soporific, according to RxList and Drugs.com. It comes in blue or pink tablets. It is available in several dosages.