Trimipramine is a tricyclic antidepressant that is used to treat symptoms of depression.

Trimipramine may also be used for purposes not listed in this medication guide.

You should not use this medicine if you are allergic to trimipramine, or if:

• you recently had a heart attack; or
• you are allergic to antidepressants such as amitriptyline, amoxapine, clomipramine, desipramine, doxepin, imipramine, nortriptyline, or protriptyline.

Do not use trimipramine if you have used an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, tranylcypromine, and others.

Tell your doctor if you have used an "SSRI" antidepressant in the past 5 weeks, such as citalopram, escitalopram, fluoxetine (Prozac), fluvoxamine, paroxetine, sertraline (Zoloft), trazodone, or vilazodone.

Tell your doctor if you have ever had:

• bipolar disorder (manic-depression) or schizophrenia;
• mental illness or psychosis;
• liver disease;
• heart disease;
• a heart attack or stroke;
• a seizure;
• overactive thyroid;
• diabetes (trimipramine may raise or lower blood sugar);
• narrow-angle glaucoma; or
• problems with urination.

Be sure your doctor knows if you also take stimulant medicine, opioid medicine, herbal products, or medicine for depression, mental illness, Parkinson's disease, migraine headaches, serious infections, or prevention of nausea and vomiting. These medicines may interact with trimipramine and cause a serious condition called serotonin syndrome.

Some young people have thoughts about suicide when first taking an antidepressant. Your doctor should check your progress at regular visits. Your family or other caregivers should also be alert to changes in your mood or symptoms.

Tell your doctor if you are pregnant or breastfeeding.

Trimipramine is not approved for use by anyone younger than 18 years old.

Use Surmontil (Oral) exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Report any new or worsening symptoms to your doctor, such as: mood or behavior changes, anxiety, panic attacks, trouble sleeping, or if you feel impulsive, irritable, agitated, hostile, aggressive, restless, hyperactive (mentally or physically), more depressed, or have thoughts about suicide or hurting yourself.

Call your doctor at once if you have:

• tunnel vision, eye pain or swelling, or seeing halos around lights;
• a light-headed feeling, like you might pass out;
• new or worsening chest pain, pounding heartbeats or fluttering in your chest;
• confusion, unusual thoughts or behavior;
• a seizure (convulsions);
• painful or difficult urination;
• easy bruising, unusual bleeding;
• restless muscle movements in your eyes, tongue, jaw, or neck; or
• fever, chills, sore throat, mouth sores, feeling light-headed.

Seek medical attention right away if you have symptoms of serotonin syndrome, such as: agitation, hallucinations, fever, sweating, shivering, fast heart rate, muscle stiffness, twitching, loss of coordination, nausea, vomiting, or diarrhea.

Common side effects may include:

• increased blood pressure;
• numbness or tingling in your hands or feet;
• dry mouth, nausea, vomiting;
• rash, itching;
• breast swelling (in men or women); or
• abnormal liver function tests.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Drinking alcohol with this medicine can cause side effects.

Avoid driving or hazardous activity until you know how this medicine will affect you. Your reactions could be impaired.

Trimipramine could make you sunburn more easily. Avoid sunlight or tanning beds. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outdoors.