Duration of action: Ativan has a half-life of about 12 to 18 hours, meaning it takes that much time for the drug's active substance to reduce by half in the body. Xanax has a half-life of 11.2 hours.

Medically reviewed by Patricia Mikula, PharmD Lorazepam, which is also known by its brand name Ativan, is a benzodiazepine drug commonly taken to treat conditions like anxiety and insomnia.

What to do if you’re concerned about taking Ativan Do not stop taking Ativan cold turkey. A sudden drop-off in daily use could have harmful consequences; not only could your anxiety worsen, ...

Calmer: Ativan may help reduce anxiety, and it does this by calming your brain and nervous system. More relaxed: Ativan can help relax your muscles, which may help you feel more relaxed.

Ativan is the commercial brand name for the drug lorazepam, sold in the U.S. since 1977. It’s been called a sedative or tranquilizer; the class of drugs is called “benzodiazepines.” ...