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    Amitriptyline, 25 mg tablets

    Drug formTablets

    ATC categoryNeurology. Psychiatry

    ATC subcategoryAntidepressants

    Brand nameAmitriptyline

    Generic nameAmitriptyline hydrochloride

    What Amitriptyline Tablets are and what they are used for

    Amitriptyline Tablets belongs to a group of medicines known as tricyclic antidepressants.

    This medicine is used to treat:

    • Depression in adults (major depressive episodes)
    • Neuropathic pain in adults
    • Chronic tension type headache prophylaxis in adults
    • Migraine prophylaxis in adults
    • Bed-wetting at night in children aged 6 years and above, only when organic causes, such as spina bifida and related disorders, have been excluded and no response has been achieved to all other non-drug and drug treatments, including muscle relaxants and desmopressin. This medicine should only be prescribed by doctors with expertise in treating patients with persistent bed-wetting.
     
    What you need to know before you take Amitriptyline Tablets

    Do not take Amitriptyline Tablets:

    • if you are allergic to amitriptyline or any of the other ingredients of this medicine.
    • if you recently have had a heart attack (myocardial infarction)
    • if you have heart problems such as disturbances in heart rhythm which are seen on an electrocardiogram (ECG), heart block, or coronary artery disease
    • if you have taken MAOIs within the last 14 days
    • if you have taken moclobemide the day before
    • if you have a severe liver disease. If you are treated with Amitriptyline Tablets, you have to stop taking this medicine and wait for 14 days before you start treatment with a MAOI.

    This medicine should not be used for children below 6 years of age.

     

    Warnings and precautions

    Talk to your doctor or pharmacist before taking Amitriptyline Tablets.

    Heart rhythm disorders and hypotension may occur if you receive a high dosage of amitriptyline. This might also occur in usual doses if you have pre-existing heart disease.

     

    Prolonged QT interval

    A heart problem called “prolonged QT interval” (which is shown on your electrocardiogram, ECG) and heart rhythm disorders (rapid or irregular heart beat) have been reported with Amitriptyline Tablets. Tell your doctor if you:

    • have slow heart rate,
    • have or had a problem where your heart cannot pump the blood round your body as well as it should (a condition called heart failure),
    • are taking any other medication that may cause heart problems, or
    • have a problem that gives you a low level of potassium or magnesium, or a high level of potassium in your blood
    • have a surgery planned as it might be necessary to stop the treatment with amitriptyline before you are given anaesthetics. In the case of acute surgery, the anaesthetist should be informed about the treatment of amitriptyline.
    • have an over active thyroid gland or receive thyroid medication.

     

    Thoughts of suicide and worsening of your depression

    If you are depressed, you can sometimes have thoughts of harming or killing themselves. These may be increased when first starting antidepressants, since these medicines all take time to work, usually about two weeks but sometimes longer.

     

    You may be more likely to think like this:

    • If you have previously had thoughts about killing or harming yourself.
    • If you are a young adult. Information from clinical trials has shown an increased risk of suicidal behaviour in young adults (less than 25 years old) with psychiatric conditions who were treated with an antidepressant.

     

    If you have thoughts of harming or killing yourself at any time, contact your doctor or go to a hospital straight away.

    You may find it helpful to tell a relative or close friend that you are depressed, and ask them to read this leaflet. You might ask them to tell you if they think your depression or anxiety is getting worse, or if they are worried about changes in your behaviour.

     

    Episodes of mania

    Some patients with manic-depressive illness may enter into a manic phase. This is characterized by profuse and rapidly changing ideas, exaggerated gaiety and excessive physical activity. In such cases, it is important to contact your doctor who probably will change your medication.

     

    Tell your doctor if you have, or have had in the past, any medical problems, especially if you have

    • narrow angle glaucoma (loss of vision due to abnormally high pressure in the eye)
    • epilepsy, a history of convulsions or fits
    • difficulty in passing urine
    • enlarged prostate
    • thyroid disease
    • bipolar disorder
    • schizophrenia
    • severe liver disease
    • severe heart disease
    • pylorus stenosis (narrowing of the gastric outlet) and paralytic ileus (blocked intestine)
    • diabetes as you might need and adjustment of your antidiabetic medicine.

    If you use antidepressants such as SSRIs, your doctor might consider changing the dose of your medicine.

    Elderly are more likely to suffer from certain side effects, such as dizziness when you stand up due to low blood pressure.

     

    Children and adolescents

    Depression, neuropathic pain, chronic tension type headache and migraine prophylaxis

    Do not give this medicine to children and adolescents aged below 18 years for these treatments as safety and efficacy have not been established in this age group.

     

    Bed-wetting at night

    • An ECG should be performed prior to initiating therapy with amitriptyline to exclude long QT syndrome
    • This medicines should not be taking at the same time as an anticholinergic drug
    • Suicidal thoughts and behaviours may also develop during early treatment with antidepressants for disorders other than depression; the same precautions observed when treating patients with depression should therefore be followed when treating patients with enuresis.

     

    Other medicines and Amitriptyline Tablets

    Some medicines may affect the action of other medicines and this can sometimes cause serious side effects.

    Tell your doctor or pharmacist if you are taking or have recently taken any other medicines, such as:

    • monoamine oxidase inhibitors (MAOIs) e.g. phenelzine, iproniazid, isocarboxazid, nialamide ortranylcypromine (used to treat depression) or selegiline (used to treat Parkinson’s disease). These should not be taken at the same time as Amitriptyline Tablets.
    • adrenaline, ephedrine, isoprenaline, noradrenaline, phenylephrine and phenylpropanolamine (thesemay be present in cough or cold medicine, and in some anaesthetics)
    • medicine to treat high blood pressure for example calcium-channel blockers (e.g. diltiazem andverapamil), guanethidine, betanidine, clonidine reserpine and methyldopa
    • Anticholinergic drugs such as certain medicines to treat Parkinsons disease and gastrointerstinal disorders (e.g. atropine, hyoscyamine)
    • thioridazine (used to treat schizophrenia)
    • tramadol (painkiller), nefopam, or opioid painkillers
    • medicines to treat fungal infections (e.g. fluconazole, terbinafine, ketoconazole, and itraconazole)
    • sedatives (e.g. babiturates)
    • antidepressants (e.g SSRIs (fluoxetine, paroxetine, fluvoxamine), and bupropion)
    • medicines for certain heart conditions (e.g. beta blockers and antiarrhythmics such as amiodarone, disopyramide, propafenone)
    • cimetidine (used to treat stomach ulcers)
    • methylphenidate (used to treat ADHD)
    • ritonavir (used to treat HIV)
    • oral contraceptives
    • rifampicin (to treat infections)
    • phenytoin and carbamazepine (used to treat epilepsy)
    • St. John´s Wort (hypericum perforatum) – a herbal remedy used for depression
    • thyroid medication.
    • apraclonidine and brimonidine (to treat glaucoma)
    • altretamine (to treat some types of cancer)
    • disulfiram (to treat alcohol addiction)
    • baclofen (muscle relaxant)
    • medicines to treat angina that you spray or dissolve under your tongue (e.g. glyceryl trinitrate “GTN”, isosorbide dinitrate)
    • sibutramine (to suppress appetite)
    • Valproic acid

     

    You should also tell your doctor if you take or have recently taken medicine that may affect the heart´s rhythm. e.g.:

    • medicines to treat irregular heartbeats (e.g. quinidine and sotalol)
    • astemizole and terfenadine (used to treat allergies and hayfever)
    • medicines used to treat some mental illnesses (e.g. pimozide and sertindole)
    • cisapride (used to treat certain types of indigestion)
    • halofantrine (used to treat malaria)
    • methadone (used to treat pain and for detoxification)
    • diuretics (“water tablets” e.g. furosemide)

     

    If you are going to have an operation and receive general or local anaesthetics, you should tell your doctor that you are taking this medicine.

    Likewise, you should tell your dentist that you take this medicine if you are to receive a local anaesthetic.

     

    Amitriptyline Tablets with alcohol

    It is not advised to drink alcohol during treatment with this medicine as it might increase the sedative effect.

     

    Pregnancy and breast-feeding

    If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor for advice before taking this medicine.

    Amitriptyline is not recommended during pregnancy unless your doctor considers it clearly necessary and only after careful consideration of the benefit and risk. If you have taken this medicine during the last part of the pregnancy, the new born may have withdrawal symptoms such as irritability, increased muscle tension, tremor, irregular breathing, poor drinking, loud crying, urinary retention, and constipation.

     

    Your doctor will advise you whether to start/continue/ stop breast-feeding, or stop using this medicine taking into account the benefit of breast-feeding for your child and the benefit of therapy for you.

     

    Driving and using machines

    This medicine may cause drowsiness and dizziness, especially in the beginning of the treatment. Do not drive or work with tools or machinery if you are affected.

     

    Amitriptyline Tablets contain lactose monohydrate (milk sugar); If you have been told by your doctor that you have an intolerance to some sugars, contact your doctor before taking this medicinal product.

     

    How to take Amitriptyline Tablets

    Always take this medicine exactly as your doctor has told you. Check with your doctor if you are not sure.

    Not all dosage schemes can be achieved with all the pharmaceutical forms/strengths. The appropriate formulation/strength should be selected for the starting doses and any subsequent dose increases.

    Depression

    Adults

    The recommended initial dose is 25 mg two times daily.

    Depending on the response to the medicine, your doctor may gradually increase the dose to 150 mg per day divided in two doses.

     

    Elderly (above 65 years of age) and patients with cardiovascular disease

    The recommended initial dose is 10 mg – 25 mg daily. Depending on your response to the medicine, your doctor may gradually increase the dose to a total daily dose of 100 mg divided in two doses. If you receive doses in the range of 100 mg – 150 mg, your doctor may need to do more frequent follow-up with you.

     

    Use in children and adolescents

    This medicine should not be given to children or adolescents for treatment of depression.

     

    Neuropathic pain, chronic tension type headache and migraine prophylaxis

    Your doctor will adjust the medication according to your symptoms and your response to the treatment.

    Adults

    The recommended initial dose is 10 mg – 25 mg in the evening.

    The recommended daily dose is 25 mg – 75 mg.

     

    Depending on your response to the medicine, your doctor may gradually increase the dose. If you receive doses above 100 mg daily, your doctor may need to do more frequent follow-up with you. Your doctor will instruct you whether to take the doses once daily or divide into two doses.

     

    Elderly (above 65 years of age) and patients with cardiovascular disease

    The recommended initial dose is 10 mg – 25 mg in the evening.

    Depending on your response to the medicine, your doctor may gradually increase the dose. If you receive doses above 75 mg daily, your doctor may need to do more frequent follow-up with you.

     

    Use in children and adolescents

    This medicine should not be given to children or adolescents for treatments of neuropathic pain, chronic tension type headache prophylaxis and migraine prophylaxis.

     

    Bed-wetting at night

    Use in children and adolescents

    The recommended doses for children:

    • aged below 6 years: see section 2 Do not take Amitriptyline Tablets
    • aged 6 to 10 years: 10 mg – 20 mg daily. A suitable dosage form should be used for this age group.
    • aged 11 years and above: 25 mg – 50 mg.

     

    The dose should be increased gradually.

    Take this medicine 1-1½ hours before bedtime.

    Before starting treatment, your doctor will conduct an ECG of your heart to check for sign of unusual heartbeat.

    Your doctor will re-evaluate your treatment after 3 months and if needed perform a new ECG.

    Do not stop the treatment without consulting your doctor first.

     

    Patients with special risks

    Patients with liver diseases or people known as “poor metabolisers” usually receive lower doses.

    Your doctor may take blood samples to determine the level of amitriptyline in the blood.

     

    How and when to take Amitriptyline Tablets

    This medicine can be taken with or without food.

    Swallow the tablets with a drink of water. Do not chew them.

     

    Duration of treatment

    Do not change the dose of the medicine or stop taking the medicine without consulting your doctor first.

     

    Depression

    As with other medicines for the treatment of depression it may take a few weeks before you feel any improvement.

    In treating depression the duration of treatment is individual, and is usually at least 6 months. The duration of treatment is decided by your doctor. Continue to take this medicine for as long as your doctor recommends.

    The underlying illness may persist for a long time. If you stop your treatment too soon, your symptoms may return.

     

    Neuropathic pain, chronic tension type headache and migraine prophylaxis

    It might take a few weeks before your feel any improvement of your pain.

    Talk to your doctor about the duration of your treatment and continue to take this medicine for as long as your doctor recommends.

     

    Bed-wetting at night

    Your doctor will evaluate if the treatment should be continued after 3 months.

     

    If you take more Amitriptyline Tablets than you should

    Contact your doctor or nearest hospital casualty department immediately. Do this even if there are no signs of discomfort or poisoning. Take the container of this medicine with you if you go to a doctor or hospital.

    Symptoms of overdose include:

    • dilated pupils
    • fast or irregular heartbeats
    • difficulties passing water
    • dry mouth and tongue
    • intestinal blockage
    • fits
    • fever
    • agitation
    • confusion
    • hallucinations
    • uncontrolled movements
    • low blood pressure, weak pulse, pallor
    • difficulty breathing
    • blue discolouration of the skin
    • decreased heart rate
    • drowsiness
    • loss of consciousness
    • coma
    • various cardiac symptoms such as heart block, heart failure, hypotension, cardiogenic shock, metabolic acidosis, hypokalemia.

     

    If you forget to take Amitriptyline Tablets

    Take the next dose at the usual time. Do not take a double dose to make up for a forgotten dose.

     

    If you stop taking Amitriptyline Tablets

    Your doctor will decide when and how to stop your treatment to avoid any unpleasant symptoms that might occur if it is stopped abruptly (e.g. headache, feeling unwell, sleeplessness and irritability).

    If you have any further questions on the use of this product, ask your doctor or pharmacist.

     

    Possible side effects

    Like all medicines, this medicine can cause side effects, although not everybody gets them.

    If you get any of the following symptoms you should see your doctor immediately:

     

    Very rare: may affect up to 1 in 10,000 people

    • Attacks of intermittent blurring of vision, rainbow vision, and eye pain.

    You should immediately have an eye examination before the treatment with this medicine can be continued. This condition may be signs of acute glaucoma.

     

    Common side effect: may affect up to 1 in 10 people

    • A heart problem called “prolonged QT interval” (which is shown on your electrocardiogram, ECG).

     

    Rare side effect: may affect up to 1 in 1,000 people

    • Bad constipation, a swollen stomach, fever and vomiting. These symptoms may be due to parts of the intestine becoming paralysed.
    • Any yellowing of the skin and the white in the eyes (jaundice). Your liver may be affected.
    • Bruising, bleeding, pallor or persistent sore throat and fever. These symptoms can be the first signs that your blood or bone marrow may be affected. Effects on the blood could be a decrease in the number of red cells (which carry oxygen around the body), white cells (which help to fight infection) and platelets (which help with clotting).
    • Suicidal thoughts or behaviour.

     

    Side effects listed below have been reported in the following frequencies:

    Very common: may affect more than 1 in 10 people

    • sleepiness/drowsiness
    • shakiness of hands or other body parts
    • dizziness
    • headache
    • irregular, hard, or rapid heartbeat
    • dizziness when you stand up due to low blood pressure (orthostatic hypotension)
    • dry mouth
    • constipation
    • nausea
    • excessive sweating
    • weight gain
    • slurred or slow speech
    • aggression
    • congested nose.

     

    Common: may affect up to 1 in 10 people

    • confusion
    • sexual disturbances (decreased sex-drive, problems with erection)
    • disturbance in attention
    • changes in taste
    • numbness or tingling in the arms or legs
    • disturbed coordination
    • dilated pupils
    • heart block
    • fatigue
    • low sodium concentration in the blood
    • agitation
    • urination disorders
    • feeling thirsty.

     

    Uncommon: may affect up to 1 in 100 people

    • excitement, anxiety, difficulties sleeping, nightmares
    • convulsions
    • tinnitus
    • increased blood pressure
    • diarrhoea, vomiting
    • skin rash, nettle rash (urticarial), swelling of the face and tongue
    • difficulties passing urine
    • increased production of breast milk or breast milk outflow without breast feeding
    • increased pressure in the eye ball
    • collapse conditions
    • worsening of cardiac failure
    • liver function impairment (e.g. cholestatic liver disease).

     

    Rare: may affect up to 1 in 1,000 people

    • decreased appetite
    • delirium (especially in elderly patients), hallucinations,
    • abnormality in the heart’s rhythm, or heartbeat pattern
    • swelling of the salivary glands
    • hair loss
    • increased sensitivity to sunlight
    • breast enlargement in men
    • fever
    • weight loss
    • abnormal results of liver function tests.

     

    Very rare: may affect up to 1 in 10,000 people

    • heart muscle disease
    • feeling of inner restlessness and a compelling need to be in constant motion
    • disorder of the peripheral nerves
    • acute increase of pressure in the eye
    • particular forms of abnormal heart rhythm (so called torsades de pointes)
    • allergic inflammation of the lung alveoli and of the lung tissue.

     

    Not known: frequency cannot be estimated from the available data

    • absent sensation of appetite
    • elevation or lowering of blood sugar levels
    • weakness, poor concentration, disorientation, delusion, restlessness, pain, poor co-ordination, blurred vision, dry eyes
    • paranoia
    • movement disorders (involuntary movements or decreased movements)
    • hypersensitivity inflammation of heart muscle, heart attack, stroke
    • hepatitis
    • hot flush.
    • stomach pain, sore mouth, black tongue
    • breast enlargement, changes in sex drive or function, ADH secretion changes

     

    An increased risk of bone fractures has been observed in patients taking this type of medicines.

     

    Additional side effects in children

    • Changes in behaviour.
     
    How to store Amitriptyline Tablets

    Store at a temperature 15-25°C, out of the reach of children. Protect from light and moisture.

    Shelf life – 3 years. Do not use this medicine after the expiry date

     

    Contents of the pack and other information

    What Amitriptyline Tablet contains

    Each coated tablet contains:

    active ingredient: amitriptyline hydrochloride – 25 mg;

    Excipients:

    tablet core: microcrystalline cellulose, lactose monohydrate, povidone, maize starch, sodium starch glycolate, magnesium stearate, talc purified.

    tablet coating: hypromellose, titanium dioxide, propylene glycol, talc purified, color yellow (riboflavin).

     

    What Amitriptyline Tablets look like and contents of the pack

    Yellow biconvex coated tablets.

    2 blister packets with 24 tablets in each (48 tablets) with the leaflet in the cardboard box.

     

    Prescription status

    Prescription drug.