Read the Medication Guide provided by your pharmacist before you start using mirtazapine and each time you get a refill. If you have any questions, ask your doctor or pharmacist.

Take this medication by mouth with or without food as directed by your doctor, usually once daily at bedtime. The dosage is based on your medical condition and response to treatment.

Use this medication regularly in order to get the most benefit from it. To help you remember, take it at the same time each day. It may take 1 to 4 weeks to notice improvement in your symptoms. Do not increase your dose or take it more often than prescribed.

Keep taking this medication even if you feel well. Do not stop taking this medication without consulting your doctor. Some conditions may become worse when you suddenly stop this drug. Your dose may need to be gradually decreased.

Tell your doctor if your condition does not get better or if it gets worse.