Before taking clonazepam,

tell your doctor or pharmacist if you are allergic to this drug, any part of this drug, or any other drugs, foods or substances. Tell your doctor or pharmacist about the allergy and what symptoms you had.

tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, and nutritional supplements you are taking or plan to take while taking clonazepam. Your doctor may need to change the doses of your medications or monitor you carefully for side effects.

tell your doctor if you have or have ever had glaucoma (increased pressure in the eye that may cause vision loss) or liver disease. Your doctor may tell you not to take clonazepam.

tell your doctor if you have or have ever had lung or kidney disease.

tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. If you become pregnant while taking clonazepam, call your doctor.

talk to your doctor about the risks and benefits of taking this medication if you are 65 years of age or older.

you should know that this medication may make you drowsy. Do not drive a car or operate machinery until you know how this medication affects you.

talk to your doctor about the safe use of alcoholic beverages during your treatment with clonazepam. Alcohol can make the side effects of clonazepam worse.

you should know that your mental health may change in unexpected ways, and you may become suicidal (thinking about harming or killing yourself or planning or trying to do so) while you are taking clonazepam. There is a chance that you may experience changes in your mental health if you take a medication such as clonazepam, but there may also be a risk that you will experience changes in your mental health if your condition is not treated. Call your doctor right away if you experience any of the following symptoms: panic attacks; agitation or restlessness; new or worsening irritability, anxiety, or depression; acting on dangerous impulses; difficulty falling or staying asleep; aggressive, angry, or violent behavior; mania (frenzied, abnormally excited mood), talking or thinking about wanting to hurt yourself or end your life, withdrawing from friends and family; preoccupation with death and dying, giving away prized possessions, or any other unusual changes in behavior or mood. Be sure that your family or caregiver knows which symptoms may be serious so they can call the doctor if you are unable to do so.