Let's take a minute to talk about your medication.

This is varenicline. You may hear it called by the brand name, Chantix. This medicine helps people stop smoking.

You should take this medicine for at least one week before you quit smoking. You and your doctor will plan your quit date together. 

Varenicline is often taken for a total of 12 weeks. You should take it exactly as your doctor tells you to. Take each dose after a meal, and drink a full glass of water. 

Most people tolerate this medicine well. Common side effects include nausea, vomiting, gas and constipation. They also include trouble sleeping and unusual dreams. These effects are normal if they are mild and should go away. You may feel sleepy, dizzy or have trouble concentrating. Also, you may not be able to tolerate alcohol very well while taking this medicine. You should decrease the amount of alcohol you drink, and you should use caution when driving until you know how this medicine affects you. You should tell your doctor if you are having side effects. He or she may want to decrease your dose. 

As with any medicine, rare but more serious side effects can occur. You should read the Medication Guide to know what symptoms to watch for, and when to report them. For example, get help right away if you have worsening thoughts, feelings or actions. Also get help if you have a rash, peeling skin, blisters in your mouth, or swelling in the face or throat area. To help keep this medicine safe for you, your doctor will follow you closely.  

Women should talk to their doctors before becoming pregnant or breastfeeding.

For best results with varenicline, ask about helpful support services that are available to help you quit smoking.