Nortriptyline is a tricyclic antidepressant (TCA) approved to treat depression. Healthcare providers also prescribe it off-label for certain chronic pain conditions and to help some people quit smoking.
Knowing what nortriptyline is used for, and how well each use is backed by research, can help you understand why it might be part of your treatment plan.
Key Takeaways
Approved for depression: Nortriptyline is officially FDA-approved to relieve symptoms of depression. It works by increasing levels of two brain chemicals, serotonin and norepinephrine.
Common off-label uses: Providers often use it off-label for certain nerve pain and chronic pain conditions, and smoking cessation. Off-label means the use is supported by clinical experience but is not listed on the FDA-approved label.
An older but still useful option: First approved in 1964, nortriptyline is considered one of the better-tolerated tricyclic antidepressants (TCAs). However, it still needs careful dosing and monitoring.
What Is Nortriptyline?
Nortriptyline is a tricyclic antidepressant (TCA). It is sold under the brand names Pamelor and Aventyl and is also available as a generic. It was approved for use in the United States in 1964, making it one of the older antidepressants still prescribed today.
TCAs were developed before newer medications like selective serotonin reuptake inhibitors (SSRIs). Because newer medications often cause fewer side effects, nortriptyline is not usually the first choice for depression today. Even so, it remains a valuable option for some people, particularly those who did not respond well to other antidepressants or who have certain pain conditions.
What Is Nortriptyline Used For?
Nortriptyline has one FDA-approved use and several common off-label uses. The strength of the evidence varies depending on the condition being treated, so it helps to look at each use individually.
Depression (the FDA-Approved Use)
The one use listed on the FDA label is the relief of symptoms of depression in adults. Like other antidepressants, it usually takes several weeks of steady use before its full effects become noticeable.
If you’d like to learn more about depression itself, our guide to the different types of depression provides an overview of the condition and how it is classified.
Neuropathic (Nerve) Pain
One of the most common off-label uses for nortriptyline is for neuropathic pain, which is pain caused by damaged or irritated nerves. Providers may prescribe it for conditions such as diabetic nerve pain and postherpetic neuralgia, the lasting nerve pain that can follow a shingles infection.
The evidence is mixed, however. A Cochrane systematic review of nortriptyline for neuropathic pain found only limited, low-quality data. So, it is often chosen based on clinical experience and tolerability rather than strong trial proof.
Other Chronic Pain Conditions
Nortriptyline is also used off-label for other long-lasting pain conditions, including myofascial pain (pain in the muscles and their coverings) and orofacial pain (pain in the face and mouth).
When used for pain, the goal is generally different from treating depression. At the lower doses commonly prescribed for pain, it usually helps to calm overactive pain signals rather than to improve mood.
Smoking Cessation
Nortriptyline has also been used to help people quit smoking. It is considered a second-line option, meaning it is generally tried when first-choice medications aren’t appropriate or effective.
For this purpose, it is typically started at a low dose and increased gradually under a healthcare provider’s guidance.
How Nortriptyline Works
Nortriptyline works mainly by blocking the reabsorption (reuptake) of serotonin and norepinephrine in the brain. These are two chemical messengers involved in mood and in how the body senses pain. Increasing the availability of these chemical messengers between nerve cells can lift mood over time and may also help reduce certain pain signals.
Its pain-relieving effects are thought to result from increased norepinephrine activity, which strengthens the body’s natural pain-inhibiting pathways. These are the natural signals that travel from the brain down the spinal cord to turn down pain messages before they reach your awareness.
This is also why the doses used for pain are often lower than those used for depression, and why relief may not depend on whether a person feels depressed.
Compared with some older tricyclics, nortriptyline tends to cause less drowsiness and fewer blood pressure drops. This more favorable side-effect profile is one reason it is often preferred over other medications in the same class.
Nortriptyline Dosing and What to Expect
Your healthcare provider will determine the right dose based on the condition being treated, your age, your overall health, and how you respond. Nortriptyline is usually started at a low dose and increased gradually to help reduce side effects.
A few general points can help you know what to expect:
Start low and increase gradually: According to the FDA label, the usual adult dose for depression is25 mg taken 3 to 4 times a day, increased gradually as needed. Most people should not take more than 150 mg per day.
Lower doses for some people: Lower doses are recommended for older adults and adolescents, and the medication is generally not recommended for children.
Be patient: For depression, it can take several weeks to feel the full effect. Continue taking it as prescribed, even if you do not notice improvement right away.
Blood level monitoring: Because TCAs work best within a specific therapeutic range, your provider may sometimes order blood tests to adjust your dose. If you feel your dose is off or the medication isn’t working as expected, our guide on the signs an antidepressant dose is too low can help you start that conversation.
Dosing can also differ by purpose. For depression, the amount is often built up toward the higher end of the range over several weeks. For nerve or chronic pain, providers commonly use lower doses, often taken once daily at night. For smoking cessation, treatment usually starts low and increases gradually, and is often begun a week or two before a planned quit date. In every case, the goal is to find the lowest effective dose with the fewest side effects.
Side Effects and Safety Considerations
Like all TCAs, nortriptyline can cause side effects, particularly during the first few weeks of treatment. Many improve as your body adjusts to the medication. Common side effects include:
Dry mouth and constipation, which are among the most frequently reported side effects.
Drowsiness or dizziness, which can raise the risk of falls, especially in older adults.
Blurred vision and difficulty urinating, which often improve over time as treatment continues.
There are also two important safety considerations to keep in mind.
First, like all antidepressants, nortriptyline carries an FDA-boxed warning about an increased risk of suicidal thoughts in children, teens, and young adults, especially early in treatment.
Second, TCAs can be dangerous in overdose and may affect heart rhythm, so they must be taken exactly as prescribed. Always tell your healthcare provider about any heart condition or other medications you take, as some combinations may increase the risk of side effects or drug interactions.
How Nortriptyline Compares to Similar Medications
People often ask how nortriptyline compares with other medications used for the same problems. The right choice depends on several factors, including your health history, symptoms, side effect concerns, cost, and how well you respond to treatment.
Nortriptyline vs. Amitriptyline
Nortriptyline is closely related to amitriptyline. In fact, the body turns amitriptyline into nortriptyline as it breaks the medication down. Because of this, the two have many similarities.
Both medications can be effective for depression and certain chronic pain conditions.
However, nortriptyline generally causes less drowsiness and fewer side effects like dry mouth and constipation. Because of this, healthcare providers may prefer nortriptyline over amitriptyline, especially for older adults who are more sensitive to side effects.
Nortriptyline vs. Duloxetine
Duloxetine is a newer medication that also increases serotonin and norepinephrine. It is FDA-approved for certain nerve pain conditions such as diabetic neuropathy.
High-quality studies directly comparing nortriptyline and duloxetine for pain are limited, so there is no clear winner on evidence alone. The decision usually comes down to a person’s other health conditions, how well each drug is tolerated, and cost, all of which your provider can help you weigh.
When Nortriptyline Might Be Right for You
Nortriptyline may be considered when newer antidepressants have not worked, or when depression occurs alongside a chronic pain condition that could also improve.
Nortriptyline can affect heart rhythm and interact with several other medications; your provider will want to know about any heart conditions, seizures, glaucoma, or other drugs you take. Because it needs careful dosing and monitoring, the decision should be made with a healthcare provider who can weigh its potential benefits against the risks.
If you’re not sure where to begin, learning who can prescribe antidepressants is a useful first step.
If you're wondering whether nortriptyline or another medication may be right for you, a licensed psychiatric provider can review your symptoms, history and treatment goals with you. You can connect with a board-certified provider through Blossom Health for virtual care covered by in-network insurance.
Medical Disclaimer
This article is for educational purposes only and does not constitute medical advice. The information provided should not replace consultation with a qualified healthcare provider. Individual responses to medications can vary significantly, and what applies to one person may not be the same for another.
Always consult with your doctor or pharmacist before making any decisions about medication changes, discontinuation, or interactions with other substances. If you’re experiencing concerning symptoms or side effects, please seek professional help from a healthcare provider. In case of a medical emergency, contact your local emergency services immediately or call 911. For mental health emergencies, contact the National Suicide Prevention Lifeline at 988.
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