Amitriptyline
Tricyclic Antidepressant (TCA) – Used for Depression, Neuropathic Pain & Migraine Prevention
Amitriptyline is a tricyclic antidepressant (TCA) that has been in clinical use for over six decades. While originally developed for depression, it is now most frequently prescribed at low doses for neuropathic pain, migraine prevention, and chronic tension-type headaches. It works by inhibiting the reuptake of serotonin and norepinephrine, and also has significant anticholinergic and antihistaminergic properties. Listed on the WHO Model List of Essential Medicines, amitriptyline remains one of the most widely prescribed TCAs worldwide.
Quick Facts: Amitriptyline
Key Takeaways
- Amitriptyline is a tricyclic antidepressant used for depression, neuropathic pain, migraine prevention, and chronic tension-type headaches, with pain-related effects often noticeable within 1–2 weeks.
- For neuropathic pain and headache prevention, typical doses are 10–75 mg daily at bedtime—significantly lower than doses used for depression (up to 150 mg/day).
- It must never be combined with MAO inhibitors, and a 14-day washout period is required when switching between the two drug classes.
- Common side effects include drowsiness, dry mouth, constipation, and weight gain—most are anticholinergic and tend to diminish over time.
- Amitriptyline is potentially dangerous in overdose due to cardiotoxicity; it should be prescribed with caution in patients at risk of self-harm and stored safely away from children.
What Is Amitriptyline and What Is It Used For?
Amitriptyline belongs to the class of tricyclic antidepressants (TCAs), a group of medications that were among the first effective pharmacological treatments for depression, introduced in the late 1950s. It works primarily by blocking the reuptake of two key neurotransmitters—serotonin (5-HT) and norepinephrine (noradrenaline)—at presynaptic nerve terminals. By preventing these neurotransmitters from being reabsorbed, amitriptyline increases their availability in the synaptic cleft, the space between nerve cells where chemical signaling occurs. This dual mechanism of action is believed to underlie both its antidepressant and analgesic properties.
In addition to its effects on serotonin and norepinephrine, amitriptyline has significant activity at several other receptor types. It is a potent antagonist of histamine H1 receptors (which contributes to its sedative and weight-gaining properties), muscarinic acetylcholine receptors (responsible for anticholinergic side effects such as dry mouth and constipation), and alpha-1 adrenergic receptors (which can cause postural hypotension). These additional pharmacological actions distinguish amitriptyline from newer, more selective antidepressants such as SSRIs and SNRIs, and contribute to both its therapeutic versatility and its side effect profile.
Amitriptyline is approved and clinically used for the following indications:
- Major Depressive Disorder (MDD): The original indication. The landmark Cipriani et al. (2018) network meta-analysis published in The Lancet, which compared 21 antidepressants, identified amitriptyline as one of the most efficacious antidepressants for acute depression treatment, though it ranked lower on tolerability compared to newer agents.
- Neuropathic Pain: Amitriptyline is recommended as a first-line treatment for neuropathic pain by both NICE and the International Association for the Study of Pain (IASP). It is effective for conditions such as diabetic neuropathy, postherpetic neuralgia, and other forms of nerve pain, typically at doses of 10–75 mg daily.
- Chronic Tension-Type Headache Prevention: Regular low-dose amitriptyline can reduce the frequency and severity of chronic tension headaches, and is recommended by international headache societies for this purpose.
- Migraine Prevention: Amitriptyline is one of the most established medications for migraine prophylaxis, recognized by the American Academy of Neurology and the European Headache Federation. Typical preventive doses range from 10 to 75 mg at bedtime.
- Nocturnal Enuresis (Bedwetting) in Children: Amitriptyline may be used in children aged 6 years and older for persistent nighttime bedwetting, but only after other treatments (including non-pharmacological approaches and desmopressin) have been tried without success. An ECG must be performed before starting treatment to rule out QT prolongation.
It is important to understand that amitriptyline does not provide immediate symptom relief for depression. Like all antidepressants, it typically takes 2 to 4 weeks before noticeable clinical improvement occurs, with full benefits often not apparent until 6 to 8 weeks of continuous treatment. For neuropathic pain and headache prevention, some patients may notice improvement sooner—within 1 to 2 weeks—although a full trial of 6 to 8 weeks is generally recommended before concluding that treatment is ineffective.
Amitriptyline is available as film-coated tablets, most commonly in strengths of 10 mg, 25 mg, and 50 mg. It is marketed under numerous brand names globally, including Saroten (widely used in Europe), Elavil and Endep (North America and Australasia), and Amitriptylin Abcur, along with many generic formulations. All formulations contain amitriptyline as the hydrochloride salt. Amitriptyline is listed on the WHO Model List of Essential Medicines, reflecting its global importance in clinical practice.
What Should You Know Before Taking Amitriptyline?
Before starting treatment with amitriptyline, it is essential that your healthcare provider has a comprehensive understanding of your medical history, current medications, and any pre-existing conditions. Amitriptyline has a broader pharmacological profile than newer antidepressants, which means it interacts with more body systems and requires more careful screening before initiation. The following sections outline the key contraindications, warnings, and precautions associated with amitriptyline use.
Contraindications
Amitriptyline must not be taken in the following circumstances:
- You are allergic to amitriptyline or any of the other ingredients in the formulation
- You have recently had a heart attack (myocardial infarction)
- You have heart rhythm disturbances visible on ECG, heart block (AV block), or coronary artery disease
- You are currently taking MAO inhibitors (monoamine oxidase inhibitors) such as phenelzine, tranylcypromine, or isocarboxazid
- You have taken MAO inhibitors within the last 14 days
- You took moclobemide the previous day
- You have severe liver disease
If you are currently taking amitriptyline and need to switch to an MAO inhibitor, you must stop amitriptyline and wait at least 14 days before starting the MAO inhibitor. This washout period is critical because the combination of these drug classes can cause serotonin syndrome—a potentially life-threatening condition characterized by agitation, confusion, rapid heart rate, high blood pressure, dilated pupils, muscle rigidity, and hyperthermia.
Warnings and Precautions
Several important warnings apply to amitriptyline treatment. Discuss the following with your doctor before starting this medication:
Heart rhythm disturbances and low blood pressure can occur with amitriptyline, particularly at higher doses or in patients with pre-existing heart disease. A condition called QT prolongation (detectable on ECG) has been reported. Tell your doctor if you have a slow heart rate, heart failure, are taking other medications that affect heart rhythm, or have electrolyte imbalances (low potassium or magnesium). If you are scheduled for surgery, your doctor may need to adjust or temporarily stop amitriptyline before anaesthesia.
Patients with depression may sometimes experience thoughts of self-harm or suicide. These thoughts may increase at the beginning of antidepressant treatment, as it takes approximately 2 weeks or longer for the medication to take effect. This risk is higher in young adults under 25 years of age. Contact your doctor immediately or go to the nearest emergency department if you experience thoughts of self-harm. It may be helpful to inform a family member or close friend about your condition and ask them to alert you if they notice changes in your behaviour.
Tell your doctor if you have, or have ever had, any of the following conditions:
- Narrow-angle glaucoma (increased pressure in the eye causing vision loss)
- Epilepsy or a history of seizures
- Difficulty urinating or an enlarged prostate
- Thyroid disease or treatment with thyroid hormones
- Bipolar disorder (amitriptyline can trigger manic episodes)
- Schizophrenia
- Liver disease (dose adjustment may be needed)
- Heart disease of any kind
- Pyloric stenosis or paralytic ileus (intestinal blockage)
- Diabetes (amitriptyline can affect blood sugar levels, requiring adjustment of diabetes treatment)
Elderly patients are at increased risk of certain side effects, particularly orthostatic hypotension (dizziness upon standing due to a drop in blood pressure), falls, and anticholinergic effects such as confusion, urinary retention, and constipation. Lower starting doses and slower dose escalation are recommended for patients over 65 years of age.
Pregnancy and Breastfeeding
Amitriptyline is generally not recommended during pregnancy unless the potential benefit clearly outweighs the risk to the unborn child. If you are pregnant, think you may be pregnant, or are planning to have a baby, consult your doctor before taking this medication. The decision to use amitriptyline during pregnancy requires a careful analysis of the risks and benefits by your healthcare provider.
If amitriptyline is taken during the later stages of pregnancy, the newborn infant may experience withdrawal symptoms including irritability, increased muscle tone, tremor, irregular breathing, difficulty feeding, loud crying, difficulty urinating, and constipation. These neonatal effects are generally transient but require monitoring.
Amitriptyline passes into breast milk in small amounts. Your doctor will advise you on whether to breastfeed or to discontinue the medication, taking into account the benefit of breastfeeding for the child and the benefit of treatment for you.
Driving and Operating Machinery
Amitriptyline can cause significant drowsiness and dizziness, particularly at the start of treatment or after dose increases. You should not drive or operate heavy machinery until you know how this medication affects you. The sedative effects are most pronounced in the first few weeks and typically diminish with continued use, but individual susceptibility varies considerably.
Alcohol
You should avoid alcohol while taking amitriptyline. Both substances are central nervous system depressants, and their combination can significantly increase sedation, drowsiness, impaired coordination, and slowed reaction times. This combination also increases the risk of falls and accidents.
How Does Amitriptyline Interact with Other Drugs?
Amitriptyline interacts with a wide range of medications due to its broad pharmacological profile. Some interactions can be serious or life-threatening, while others may require dose adjustments or increased monitoring. It is critical that your healthcare provider is aware of all medications you are taking, including prescription drugs, over-the-counter medications, vitamins, and herbal supplements.
Major Interactions (Avoid Combination)
| Interacting Drug | Risk | Recommendation |
|---|---|---|
| MAO inhibitors (phenelzine, tranylcypromine, isocarboxazid, selegiline) | Serotonin syndrome – potentially fatal | 14-day washout required between drugs |
| Moclobemide | Serotonin syndrome risk | Wait at least 1 day after stopping moclobemide |
| Thioridazine | Severe cardiac arrhythmias, QT prolongation | Combination contraindicated |
| QT-prolonging drugs (quinidine, sotalol, pimozide, cisapride, halofantrin) | Additive QT prolongation, torsades de pointes | Avoid combination; ECG monitoring if unavoidable |
Moderate Interactions (Use with Caution)
| Interacting Drug | Effect | Action |
|---|---|---|
| SSRIs (fluoxetine, paroxetine, fluvoxamine) | Increased amitriptyline levels via CYP2D6 inhibition; serotonin syndrome risk | Dose reduction may be needed; monitor closely |
| Adrenaline/Epinephrine and sympathomimetics | Potentiated cardiovascular effects; hypertensive crisis | Use with extreme caution; includes some cold remedies |
| Tramadol | Increased seizure risk; serotonin syndrome risk | Use alternative analgesics if possible |
| Antihypertensives (clonidine, guanethidine, methyldopa) | Reduced antihypertensive effect | Monitor blood pressure; may need alternative |
| Valproic acid (valproate) | Increased amitriptyline levels | Monitor for increased side effects; dose adjustment |
| Cimetidine | Increased amitriptyline plasma levels | Consider alternative acid suppressant |
| Anticholinergic drugs (atropine, hyoscine) | Additive anticholinergic effects (dry mouth, constipation, urinary retention, confusion) | Avoid combination if possible; monitor elderly patients |
| Antifungals (fluconazole, ketoconazole, terbinafine) | Increased amitriptyline levels via CYP inhibition | Monitor for toxicity; dose adjustment may be needed |
| Methylphenidate | Increased amitriptyline levels | Monitor closely; adjust dose if needed |
| Barbiturates and sedatives | Additive CNS depression; reduced amitriptyline levels | Monitor for excessive sedation |
| St. John’s Wort (Hypericum perforatum) | Reduced amitriptyline levels; serotonin syndrome risk | Avoid combination |
| Carbamazepine, phenytoin, rifampicin | Reduced amitriptyline levels via enzyme induction | Higher doses may be needed; monitor blood levels |
| Thyroid hormones | Enhanced antidepressant effect and increased risk of cardiac arrhythmias | Use with caution; monitor cardiac function |
| Oral contraceptives | May alter amitriptyline metabolism | Monitor for changes in effectiveness or side effects |
| Diuretics (furosemide) | Low potassium increases QT prolongation risk | Monitor electrolytes |
If you are scheduled for any surgery, including dental procedures, tell your surgeon or dentist that you are taking amitriptyline. The medication may need to be temporarily discontinued before general anaesthesia, and the anaesthetist must be informed of your treatment to avoid potential complications with anaesthetic agents.
What Is the Correct Dosage of Amitriptyline?
Amitriptyline dosing is highly individualized and depends on the condition being treated, the patient’s age, weight, kidney and liver function, and response to treatment. The general principle is to “start low and go slow”—beginning at a low dose and gradually increasing over several weeks to minimize side effects. Amitriptyline can be taken with or without food and should be swallowed whole with water (not chewed).
Adults – Depression
Depression Dosing
- Starting dose: 25 mg twice daily
- Maintenance dose: Gradually increased to 50–150 mg per day, divided into two doses
- Maximum dose: 150 mg per day (may be increased to 200 mg under specialist supervision)
- Duration: At least 6 months; treatment length determined by your doctor
It may take several weeks before you notice improvement. Continue taking the medication as prescribed even if you do not feel an immediate effect. The underlying condition may persist for a long time, and stopping treatment too early can lead to relapse.
Adults – Neuropathic Pain, Tension Headache & Migraine Prevention
Pain & Headache Prevention Dosing
- Starting dose: 10–25 mg in the evening
- Usual maintenance dose: 25–75 mg daily
- Maximum dose: 75 mg per day (doses above 100 mg may be used under specialist supervision with close monitoring)
- Administration: Usually taken once daily at bedtime; higher doses may be split into two doses
Your doctor will adjust the dose based on your symptoms and treatment response. Some patients may notice improvement within 1–2 weeks, but a full trial of 6–8 weeks is recommended before concluding that treatment is ineffective.
Elderly Patients (Over 65) and Patients with Cardiovascular Disease
Elderly & Cardiovascular Dosing
- Starting dose (depression): 10–25 mg daily
- Maximum dose (depression): 100 mg per day, divided into two doses
- Starting dose (pain/headache): 10–25 mg in the evening
- Maximum dose (pain/headache): 75 mg per day
Elderly patients and those with cardiovascular disease require lower doses and more frequent medical follow-up due to increased sensitivity to side effects, particularly orthostatic hypotension and anticholinergic effects.
Children – Nocturnal Enuresis (Bedwetting)
Paediatric Dosing – Enuresis Only
- Under 6 years: Amitriptyline must not be used
- Ages 6–10: 10–20 mg daily (an appropriate dosage form should be used)
- Ages 11 and older: 25–50 mg daily
- Timing: Taken 1–1.5 hours before bedtime
An ECG must be performed before starting treatment to rule out long QT syndrome. Treatment is re-evaluated after 3 months, with a repeat ECG if needed. Amitriptyline must not be used in children and adolescents under 18 years for depression, neuropathic pain, or headache prevention, as safety and efficacy have not been established in these age groups for these indications.
Missed Dose
If you forget to take a dose, take your next dose at the usual time. Do not take a double dose to make up for a missed one. If you regularly forget doses, consider setting a daily reminder or alarm.
Overdose
Amitriptyline is particularly dangerous in overdose due to its cardiotoxic effects. If you or someone else has taken too much amitriptyline, contact emergency services or a poison control centre immediately, even if there are no symptoms yet. Bring the medication packaging if possible.
Symptoms of amitriptyline overdose may develop rapidly and can include:
- Dilated pupils and dry mouth
- Rapid or irregular heartbeat (tachycardia, arrhythmias)
- Seizures (convulsions)
- Agitation, confusion, or hallucinations
- Low blood pressure, weak pulse, and pallor
- Breathing difficulties and bluish skin discoloration
- Drowsiness progressing to unconsciousness and coma
- Cardiac arrest in severe cases
Overdose in children is especially dangerous, as children are particularly sensitive to the cardiac and neurological effects of amitriptyline. Even relatively small amounts can cause severe toxicity in young children, making safe storage critically important.
What Are the Side Effects of Amitriptyline?
Like all medications, amitriptyline can cause side effects, although not everyone experiences them. Many of the most common side effects are related to the drug’s anticholinergic properties (blocking acetylcholine receptors) and antihistaminergic activity (blocking histamine receptors). These effects are generally most pronounced at the beginning of treatment and tend to improve as your body adjusts to the medication. Starting at a low dose and increasing gradually can help minimize these effects.
- Recurring blurred vision, rainbow-coloured halos, and eye pain – may indicate acute glaucoma (very rare)
- QT prolongation – visible on ECG; may cause palpitations (common)
- Severe constipation, bloating, fever, and vomiting – may indicate paralytic ileus (rare)
- Yellowing of the skin or eyes (jaundice) – may indicate liver damage (rare)
- Easy bruising, bleeding, pallor, or persistent sore throat and fever – may indicate blood disorders (rare)
- Thoughts of self-harm or suicide (rare)
Very Common
May affect more than 1 in 10 people
- Drowsiness and sleepiness
- Tremor (shaking of hands or other body parts)
- Dizziness
- Headache
- Irregular, forceful, or rapid heartbeat (palpitations)
- Orthostatic hypotension (dizziness when standing up)
- Dry mouth
- Constipation
- Nausea
- Excessive sweating
- Weight gain
- Slurred or slow speech
- Aggression
- Nasal congestion
Common
May affect up to 1 in 10 people
- Confusion
- Sexual changes (reduced libido, erectile dysfunction)
- Attention disturbance
- Taste changes
- Numbness and tingling in arms and legs (paraesthesia)
- Coordination difficulties (ataxia)
- Dilated pupils (mydriasis)
- Heart conduction disturbance (AV block)
- Fatigue
- Low sodium levels (hyponatraemia)
- Agitation and restlessness
- Urinary problems
- Thirst
- QT prolongation on ECG
Uncommon
May affect up to 1 in 100 people
- Excitement, anxiety, insomnia, nightmares
- Seizures (convulsions)
- Tinnitus (ringing in the ears)
- High blood pressure
- Diarrhoea, vomiting
- Skin rash, urticaria (hives), facial and tongue swelling
- Difficulty urinating
- Increased breast milk production (galactorrhoea)
- Increased eye pressure
- Fainting
- Worsening heart failure
- Impaired liver function
Rare
May affect up to 1 in 1,000 people
- Decreased appetite
- Delirium (particularly in elderly patients), hallucinations
- Abnormal heart rhythm
- Swollen salivary glands
- Hair loss
- Increased sun sensitivity (photosensitivity)
- Breast enlargement in men (gynaecomastia)
- Fever
- Weight loss
- Abnormal liver function tests
- Paralytic ileus (intestinal obstruction)
- Jaundice
- Blood disorders (reduced red/white blood cells, platelets)
- Suicidal thoughts or behaviour
Very Rare
May affect up to 1 in 10,000 people
- Cardiomyopathy (heart muscle disease)
- Akathisia (inner restlessness with urge to move constantly)
- Peripheral neuropathy (numbness and tingling in feet)
- Acute glaucoma (sudden increase in eye pressure)
- Torsades de pointes (specific type of dangerous heart rhythm)
- Allergic alveolitis (inflammation in lung tissue)
Frequency Not Known
Cannot be estimated from available data
- Loss of appetite
- Blood sugar changes (increase or decrease)
- Paranoia (delusional thinking)
- Movement disorders (involuntary or decreased movements)
- Myocarditis (inflammation of the heart muscle due to hypersensitivity)
- Liver inflammation (hepatitis)
- Hot flushes
- Dry eyes
- Increased risk of bone fractures
If you experience any side effects, including those not listed above, talk to your doctor or pharmacist. You can also report side effects directly to your national medicines regulatory agency. By reporting side effects, you help provide more information on the safety of this medicine.
How Should You Store Amitriptyline?
Proper storage of amitriptyline is essential to maintain the medication’s effectiveness and to prevent accidental exposure, particularly in households with children. Amitriptyline is especially dangerous in overdose for young children, making secure storage a critical safety measure.
- Temperature: Store at or below 30°C (86°F). Do not freeze.
- Light protection: Keep blister packs in the outer carton to protect from light, as amitriptyline is light-sensitive.
- Expiry date: Do not use after the expiry date printed on the carton (after “EXP”). The expiry date refers to the last day of the stated month.
- Child safety: Keep out of sight and reach of children at all times. Consider using a locked medicine cabinet.
- Disposal: Do not dispose of medications via household waste or wastewater. Return unused or expired medicines to your pharmacy for environmentally safe disposal.
What Does Amitriptyline Contain?
Understanding the full composition of your medication is important, particularly if you have known allergies or intolerances to any excipients (inactive ingredients). The following information describes a typical amitriptyline formulation; exact inactive ingredients may vary slightly between manufacturers.
Active Ingredient
Each tablet contains amitriptyline as the hydrochloride salt:
- 10 mg tablets: Light pink, round, biconvex film-coated tablet (7 × 3.4 mm)
- 25 mg tablets: Pink, round, biconvex film-coated tablet (7 × 3.4 mm)
- 50 mg tablets: Brownish-pink, round, biconvex film-coated tablet (9 × 4.4 mm)
Inactive Ingredients (Excipients)
Typical inactive ingredients include:
- Lactose monohydrate
- Maize (corn) starch
- Povidone
- Magnesium stearate
- Talc
- Polyvinyl alcohol
- Macrogol (polyethylene glycol)
- Titanium dioxide (E171)
- Iron oxide (E172)
Amitriptyline tablets contain lactose monohydrate. If you have been told by your doctor that you have an intolerance to certain sugars, contact your doctor before taking this medicine. Lactose-free formulations may not be available for all strengths or in all markets.
Amitriptyline is available in blister packs and bottles, typically containing 20 or 100 tablets. Not all pack sizes may be available in all countries. Your pharmacist can advise on the formulations available in your region.
What Happens When You Stop Taking Amitriptyline?
Amitriptyline should not be stopped suddenly, as abrupt discontinuation can lead to a range of unpleasant withdrawal symptoms. These symptoms are not dangerous but can be distressing and may be mistaken for a return of the underlying condition. Your doctor will determine when and how to gradually reduce your dose to minimize these effects.
Withdrawal symptoms that may occur with abrupt cessation include:
- Headache
- General malaise (feeling unwell)
- Insomnia or vivid dreams
- Irritability and restlessness
- Nausea
- Excessive sweating
- Diarrhoea
The tapering schedule depends on several factors, including the dose you are currently taking, how long you have been on treatment, and the reason for discontinuation. For patients who have been on higher doses or longer-term treatment, a slower taper over several weeks or months is typically recommended. Your doctor will monitor you during the tapering process and can adjust the rate of reduction if withdrawal symptoms occur.
If you are taking amitriptyline for depression, it is important to understand that the underlying condition may persist for a long time. Stopping treatment too early, even if you feel well, significantly increases the risk of relapse. Treatment duration for depression is typically at least 6 months from the point of symptom resolution, and some patients benefit from longer-term maintenance therapy.
Frequently Asked Questions About Amitriptyline
The onset of amitriptyline’s effects depends on the condition being treated. For depression, it typically takes 2 to 4 weeks before noticeable improvement, with full benefits often not apparent until 6 to 8 weeks. For neuropathic pain and migraine prevention, some patients report improvement within 1 to 2 weeks, although a full trial of 6 to 8 weeks is recommended. The sedative effect, which can aid sleep, often occurs from the very first dose. Do not stop taking the medication early if you do not feel an immediate effect.
Yes, absolutely. Amitriptyline is widely prescribed specifically for neuropathic pain, chronic tension-type headaches, and migraine prevention, independent of any mood disorder. The pain-relieving mechanism is separate from its antidepressant action and involves modulation of descending pain-inhibitory pathways in the spinal cord. For pain indications, it is typically used at lower doses (10–75 mg) than those used for depression. NICE and many other international guidelines recommend amitriptyline as a first-line treatment for neuropathic pain.
Amitriptyline causes significant drowsiness, particularly at the start of treatment, due to its potent antihistaminergic properties. Taking it at bedtime turns this side effect into a benefit—it helps promote sleep while minimizing daytime sedation. This is especially advantageous for patients with pain conditions or depression who also have difficulty sleeping. For depression at higher doses, the total daily dose may be split into a smaller morning dose and a larger evening dose.
Yes, weight gain is a very common side effect of amitriptyline, affecting more than 1 in 10 people. The mechanism involves amitriptyline’s blockade of histamine H1 and serotonin 5-HT2C receptors, which can increase appetite and promote fat storage. The extent of weight gain varies between individuals and is generally dose-dependent. If weight gain is a significant concern, discuss this with your doctor, who may consider adjusting the dose or switching to an alternative medication with a lower risk of weight gain.
Amitriptyline is not considered addictive in the traditional sense—it does not produce euphoria, craving, or drug-seeking behaviour. However, physical dependence can develop with long-term use, meaning that abrupt discontinuation can cause withdrawal symptoms (such as headache, nausea, malaise, and irritability). This is why the dose should always be reduced gradually under medical supervision rather than stopped suddenly. This is a form of physiological adaptation, not addiction.
Amitriptyline overdose is a medical emergency. Contact emergency services or a poison control centre immediately, even if you feel well, as symptoms can develop rapidly and include dangerous heart rhythm disturbances, seizures, and loss of consciousness. Bring the medication packaging with you to the hospital. Children are particularly vulnerable to amitriptyline toxicity—even small amounts can cause serious harm in young children. Always store this medication securely out of children’s reach.
References & Sources
This article is based on evidence from the following peer-reviewed sources and clinical guidelines:
- Cipriani A, Furukawa TA, Salanti G, et al. Comparative efficacy and acceptability of 21 antidepressant drugs for the acute treatment of adults with major depressive disorder: a systematic review and network meta-analysis. The Lancet. 2018;391(10128):1357–1366. doi:10.1016/S0140-6736(17)32802-7
- Moore RA, Derry S, Aldington D, Cole P, Wiffen PJ. Amitriptyline for neuropathic pain and fibromyalgia in adults. Cochrane Database of Systematic Reviews. 2015;(7):CD008242. doi:10.1002/14651858.CD008242.pub3
- National Institute for Health and Care Excellence (NICE). Neuropathic pain in adults: pharmacological management in non-specialist settings. Clinical guideline CG173. Updated 2020. nice.org.uk/guidance/cg173
- American Psychiatric Association. Practice Guidelines for the Treatment of Major Depressive Disorder. 3rd ed. 2023. psychiatry.org
- World Health Organization. WHO Model List of Essential Medicines – 23rd List. 2023. Amitriptyline listed under antidepressant medicines.
- British National Formulary (BNF). Amitriptyline hydrochloride. National Institute for Health and Care Excellence. bnf.nice.org.uk
- European Medicines Agency. Amitriptyline – Summary of Product Characteristics. Accessed 2025.
- Finnerup NB, Attal N, Haroutounian S, et al. Pharmacotherapy for neuropathic pain in adults: a systematic review and meta-analysis. The Lancet Neurology. 2015;14(2):162–173. doi:10.1016/S1474-4422(14)70251-0
- Jackson JL, Shimeall W, Sessums L, et al. Tricyclic antidepressants and headaches: systematic review and meta-analysis. BMJ. 2010;341:c5222. doi:10.1136/bmj.c5222
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