Nonbenzodiazepine hypnotics melatonin ramelteon

Which of the following statements regarding non-benzodiazepine hypnotics is true?

1: Elderly patients taking non-benzodiazepine hypnotics are at increased risk of falling
2: Non-benzodiazepine hypnotics can be safely used with barbiturates
3: Non-benzodiazepines are metabolized by the kidneys
4: Non-benzodiazepines can be used to terminate seizures