Halcion can slow or stop your breathing, especially if you have recently used an opioid medication, alcohol, or other drugs that can slow your breathing.
MISUSE OF  Halcion CAN CAUSE ADDICTION, OVERDOSE, OR DEATH. Keep the medication in a place where others cannot get to it.
Tell your doctor about all your current medicines and any you start or stop using. Many drugs can interact, and some drugs should not be used together.
Before taking this medicine
You should not use this medicine if you are allergic to Halcion or similar medicines (such as alprazolam, diazepam, lorazepam, Ativan, Klonopin, Restoril, Tranxene, Valium, Versed, Xanax, and others).
Many drugs can interact and cause dangerous effects. Some drugs should not be used together with Halcion. Your doctor may change your treatment plan if you also use:
nefazodone;
an antibiotic--clarithromycin, telithromycin;
antifungal medicine--itraconazole, ketoconazole, posaconazole, voriconazole; or
antiviral medicine to treat HIV or hepatitis C--boceprevir, cobicistat, dasabuvir, elvitegravir, indinavir, lopinavir/ritonavir, nelfinavir, ombitasvir, paritaprevir saquinavir, telaprevir, tipranavir.
Tell your doctor if you have ever had:
depression, mental illness, suicidal thoughts or actions;
lung disease, breathing problems, sleep apnea (breathing stops during sleep); or
alcoholism or drug addiction.
Tell your doctor if you are pregnant or plan to become pregnant. If you use Halcion while you are pregnant, your baby could become dependent on the drug. This can cause life-threatening withdrawal symptoms in the baby after it is born. Babies born dependent on habit-forming medicine may need medical treatment for several weeks.
If you are breastfeeding, tell your doctor if you notice drowsiness, breathing problems, or feeding problems in the nursing baby.
Halcion is not approved for use by anyone younger than 18 years old.
