Phenobarbital slows the activity of your brain and nervous system. Therefore, the drug is used to prevent seizures, for short- term treatment of insomnia, and even as a sedative before surgery.Phenobarbital should not be taken if pregnant for it can cause addiction or withdrawal symptoms to the unborn baby. This drug also affects the efficiency of birth control pills; so, if sexually active one must consult with a doctor for a safe plan or use another form of contraception. It is not recommended to drink while on Phenobarbital. Phenobarbital can also cause severe allergic reactions like hives, trouble breathing; swelling of the lips, face, tongue, or throat. If you experience this you must consult to medical help. Abuse of this drug or an over dose can be fatal and the dosage must be closely monitored.  

-Celina