Overview

Active ingredient: Amitriptyline

Relevant categories: Antidepressants, Pain relief, Migraine prevention, Sleep modulation

Amitriptyline is a tricyclic antidepressant that acts on the central nervous system, modulating neurotransmitters such as serotonin and norepinephrine. In the United States, it is available only with a prescription and is widely dispensed as a generic. Brand Elavil is not commonly stocked, but the same active ingredient is used.

If you are primarily looking for information on unwanted effects, jump to Side effects. For law and access matters in the USA, see Legal information.

What Elavil is used for

Clinically, amitriptyline is prescribed for several conditions. Its effect often appears gradually, with noticeable improvement within 2 to 4 weeks for mood conditions and sometimes sooner for pain and sleep.

  • Major depressive disorder (FDA approved; tricyclic class)
  • Chronic neuropathic pain and fibromyalgia (widely used off label)
  • Prevention of migraine and tension-type headaches (off label)
  • Insomnia associated with depression or chronic pain (off label)
  • Anxiety and panic symptoms in selected patients (off label)
  • OCD is generally treated first line with SSRIs or clomipramine; amitriptyline is not a standard first-line option for OCD

Always confirm the intended use with your prescriber and report early responses or side effects so dosing can be adjusted safely. Do not stop suddenly; see How to take.

Available dosages

Common tablet strengths dispensed in the USA include:

  • 10 mg
  • 25 mg
  • 50 mg
  • 75 mg

Other strengths may exist depending on the manufacturer. The exact dose and schedule are individualized.

How to take Elavil

Use this medicine strictly as directed by your clinician. Doses are usually started low and titrated upward to reduce side effects.

  • Take with or without food. Many patients take the larger or entire dose at bedtime because of drowsiness.
  • It may take several weeks to experience the full antidepressant effect; pain or sleep benefits can appear earlier.
  • Avoid alcohol, which can increase sedation and impair judgment.
  • Do not stop abruptly unless instructed. A gradual taper helps prevent withdrawal-like symptoms and rebound of the underlying condition.
  • Grapefruit and grapefruit juice can raise blood levels in some people; discuss consistent dietary habits with your prescriber.

If you develop troubling symptoms, review Side effects and contact your clinician.

Precautions and who should use with extra care

Before starting amitriptyline, tell your doctor or pharmacist about all medical conditions and allergies. Extra caution or an alternative treatment may be advised if you have:

  • Recent heart attack, significant arrhythmia, heart block, or prolonged QT interval
  • Severe liver disease
  • Narrow-angle glaucoma or untreated elevated eye pressure
  • Urinary retention, severe constipation, or prostate enlargement
  • Bipolar disorder or history of mania
  • Seizure disorders

Amitriptyline may cause drowsiness, dizziness, blurred vision, and orthostatic lightheadedness. Older adults can be more sensitive to anticholinergic effects (dry mouth, constipation, confusion) and to falls. In pregnancy or breastfeeding, use only if the expected benefit justifies potential risks; discuss individualized guidance with your clinician.

Until you know how you respond, avoid driving, operating machinery, or activities that require full alertness.

Possible side effects

Many people have mild effects that improve after dose adjustment. Seek urgent care for severe or rapidly worsening symptoms.

Common, usually mild

  • Drowsiness or fatigue
  • Dry mouth and constipation
  • Dizziness or lightheadedness, especially when standing
  • Blurred vision
  • Sweating or tremor
  • Weight gain or increased appetite
  • Nausea or stomach upset
  • Headache

Serious, seek medical help

  • Irregular heartbeat, fainting, or chest pain
  • Seizures
  • Severe constipation or inability to urinate
  • Confusion, hallucinations, or severe agitation
  • Allergic reaction with rash, swelling, or trouble breathing
  • Serotonin syndrome when combined with other serotonergic drugs: fever, rigidity, agitation, fast heart rate
  • Worsening depression or new suicidal thoughts, especially early in treatment or after dose changes

If you notice any reaction not listed here, contact your healthcare professional.

Drug and substance interactions

Provide your prescriber with a complete list of prescription, OTC, and herbal products. Important interactions include:

  • H2-receptor blockers such as cimetidine and ranitidine may raise amitriptyline levels.
  • SSRIs like fluoxetine, paroxetine, sertraline, citalopram can increase levels and risk of serotonin syndrome, especially fluoxetine and paroxetine via CYP2D6 inhibition.
  • Antipsychotics (for example, quetiapine, haloperidol) may add sedation and QT risk.
  • Antiarrhythmics such as quinidine or propafenone increase cardiac and metabolic interaction risks.
  • MAO inhibitors including phenelzine, isocarboxazid, tranylcypromine, selegiline, and linezolid must not be combined. Allow at least 14 days between MAOI and amitriptyline.
  • Other serotonergic agents (triptans, tramadol, SNRIs, St. Johns wort) increase serotonin syndrome risk.
  • Alcohol, benzodiazepines, opioids add to sedation and impaired coordination.
  • Smoking can alter drug levels in some patients; inform your clinician if you start or stop tobacco.
  • Grapefruit products may elevate levels in some individuals; keep intake consistent and discuss with your prescriber.

When in doubt, consult a pharmacist. For symptoms of serotonin syndrome or heart rhythm problems, seek urgent care.

Missed dose

If you forget a dose, take it when remembered unless it is near the time for the next dose. If close to the next dose, skip the missed one and resume your usual schedule. Do not double up.

Overdose

Overdose can be dangerous and may cause severe drowsiness, confusion, abnormal heart rhythm, seizures, or fainting. If you suspect an overdose, call 911 or seek emergency medical help immediately. You can also contact Poison Control in the USA at 1-800-222-1222.

Storage

Store tablets at room temperature 68-77 F (20-25 C), away from moisture and direct light, and out of reach of children and pets. Do not store in the bathroom. Dispose of unused medicine safely according to local guidelines or pharmacy take-back programs.

Alternative and similar medications

Depending on your diagnosis and tolerance, your prescriber may consider other options:

Other tricyclics

  • Nortriptyline (often better tolerated and less sedating)
  • Imipramine or desipramine
  • Doxepin (notable for sedation and insomnia utility)
  • Clomipramine (commonly used for OCD)

Modern antidepressants

  • SSRIs: sertraline, fluoxetine, escitalopram, paroxetine
  • SNRIs: duloxetine, venlafaxine
  • Others: bupropion, mirtazapine, vortioxetine

Alternatives for pain or migraine

  • Duloxetine or venlafaxine for neuropathic pain
  • Gabapentin or pregabalin
  • Topiramate or propranolol for migraine prevention

Choice depends on your condition, medical history, and side effect profile. For cost comparisons, see Prices in the USA.

Approximate prices in the USA (USD)

Prices vary widely by pharmacy, dose, quantity, insurance, and discount cards. The following rough cash-price ranges for generic amitriptyline are typical as of recent public estimates:

  • 10 mg tablets, 30 count: about $3 to $12 with common discounts; $10 to $25 typical retail without discounts
  • 25 mg tablets, 30 count: about $4 to $15 with discounts; $12 to $30 typical retail
  • 50 mg or 75 mg tablets, 30 count: about $5 to $20 with discounts; $15 to $40 typical retail

Brand Elavil is rarely stocked and would generally be more expensive if available. Many patients pay less than $10 for a 1-month supply using pharmacy coupons. Compare pharmacies or use reputable discount programs to minimize cost.

Additional practical notes

Consistency helps. Take doses at the same time each day and keep a log of benefits or side effects to review with your clinician. If cost or supply is a concern, ask your pharmacist about tablet splitting where appropriate and safe.

If you are switching from or to an MAOI or another antidepressant, your prescriber will usually include a washout or cross-taper plan to reduce risk. For severe side effects, jump to Side effects or Overdose if you suspect an emergency.

Back to top

Disclaimer

This page provides general information and does not include every possible precaution, interaction, or direction. It is not a substitute for personalized medical advice, diagnosis, or treatment. Always follow the instructions from your healthcare professional and your prescription label. The authors are not responsible for consequences from use of this information, including self-treatment.