Reviewed on 1/28/2022

Brand Name: Tofranil, Tofranil-PM

Generic Name: Imipramine

Drug Class: Antidepressants, TCAs

What Is Imipramine and How Does It Work?

Imipramine is a prescription medication used to treat Depression

  • Imipramine is available under the following different brand names: Tofranil, Tofranil-PM.

What Are Dosages of Imipramine?

Adult and pediatric dosage


  • 10mg
  • 25mg
  • 50mg


  • 75mg
  • 100mg
  • 125mg
  • 150mg


Adult dosage

  • Outpatient: 75mg orally once daily initially; may increase to 150 mg/day gradually; not to exceed 200 mg/day outpatient; may give in divided doses or a single dose at bedtime. 
  • Inpatient: 100-150 mg once daily; may increase gradually to 200 mg/day; if no response after 2 weeks, may increase further to 250-300 mg/day; not to exceed 300 mg/day; may give in divided doses or as a single dose at bedtime. 
  • Maintenance dose: 50-100 mg orally once daily


Pediatric dosage

  • 10-25 mg orally at bedtime initially; may increase by 10-25 mg once every 1-2 weeks
  • Children 6-12 years of age: Not to exceed 50 mg or 2.5 mg/kg/day at bedtime
  • Children 12-14 years of age: Not to exceed 75 mg/day

Dosage Considerations – Should be Given as Follows: 

  • See “Dosages”.


Depression is a(n) __________ . See Answer

What Are Side Effects Associated with Using Imipramine?

Common side effects of Imipramine include:

Serious side effects of Imipramine include:

Rare side effects of Imipramine include:

  • none 
This is not a complete list of side effects and other serious side effects or health problems may occur as a result of the use of this drug. Call your doctor for medical advice about serious side effects or adverse reactions. You may report side effects or health problems to FDA at 1-800-FDA-1088.

What Other Drugs Interact with Imipramine?

If your medical doctor is using this medicine to treat your pain, your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor, health care provider, or pharmacist first

  • Imipramine has severe interactions with at least 18 other drugs.
  • Imipramine has serious interactions with at least 128 other drugs. 
  • Imipramine has moderate interactions with at least 375 other drugs. 
  • Imipramine has minor interactions with at least 105 other drugs.

This information does not contain all possible interactions or adverse effects. Visit the RxList Drug Interaction Checker for any drug interactions. Therefore, before using this drug, tell your doctor or pharmacist of all the drugs you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist. Check with your physician if you have health questions or concerns.

What Are Warnings and Precautions for Imipramine?


Coadministration with serotonergic drugs

  • Concomitant with or within 14 days of MAOIs (serotonin syndrome)
  • Starting imipramine in a patient who is being treated with linezolid or IV methylene blue is contraindicated because of an increased risk of serotonin syndrome
  • If linezolid or IV methylene blue must be administered, discontinue imipramine immediately and monitor for CNS toxicity; may resume imipramine 24 hours after last linezolid or methylene blue dose or after 2 weeks of monitoring, whichever comes first

Effects of drug abuse

  • None

Short-Term Effects

  • See “What Are Side Effects Associated with Using Imipramine?”

Long-Term Effects

  • See “What Are Side Effects Associated with Using Imipramine?”


Pregnancy and Lactation

  • Use in LIFE-THREATENING emergencies when no safer drug is available during pregnancy.
  • Lactation: Distributed in breast milk; do not nurse (AAP states effect on nursing infants is unknown but may be of concern).


Learn to Spot Depression: Symptoms, Warning Signs, Medication See Slideshow
Medscape. Imipramine.

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