Venlafaxine 37.5 mg Film-coated Tablets Venlafaxine 75 mg Film-coated Tablets – patient leaflet, side effects, dosage

1. What Venlafaxine Tablets are and what they are used for

Venlafaxine tablets contain the active substance venlafaxine. Venlafaxine is an antidepressant that belongs to a group of medicines called serotonin and norepinephrine reuptake inhibitors (SNRIs). This group of medicines is used to treat depression and other conditions, such as anxiety. It is thought that people who are depressed and/or anxious have lower levels of serotonin and noradrenaline in the brain. It is not fully understood how antidepressants work, but they may help by increasing the levels of serotonin and noradrenaline in the brain.

Venlafaxine is a treatment for adults with depression. Treating depression properly is important to help you get better. If it is not treated, your condition may not go away and may become more serious and more difficult to treat.

2. What you need to know before you take Venlafaxine Tablets

Do not take Venlafaxine Tablets

• If you are allergic to venlafaxine or any of the other ingredients of this medicine (listed in section 6).
• If you are also taking or have taken within the last 14 days any medicines known as irreversible monoamine oxidase inhibitors (MAOIs), used to treat depression or Parkinson’s disease. Taking an irreversible MAOI together with Venlafaxine Tablets, can cause serious or even life-threatening side effects. Also, you must wait at least 7 days after you stop taking Venlafaxine Tablets before you take any irreversible MAOI (see also, the section “Other medicines and Venlafaxine” and the information in that section about `Serotonin syndrome'.).

Warnings and precautions

Talk to your doctor or pharmacist before taking Venlafaxine tablets:

• If you use other medicines that taken together with Venlafaxine Tablets could increase the risk of developing serotonin syndrome, a potentially life-threatening
• condition (see the section “Other medicines and Venlafaxine”).
• If you have eye problems, such as certain kinds of glaucoma (increased pressure in the eye).
• If you have a history of high blood pressure.
• If you have a history of heart problems.
• If you have been told you have an abnormal heart rhythm.
• If you have a history of fits (seizures).
• If you have a history of low sodium levels in your blood (hyponatraemia).

• If you have a tendency to develop bruises or a tendency to bleed easily (history of bleeding disorders), or if you are taking other medicines that may increase the risk of bleeding e.g., warfarin (used to prevent blood clots). Or if you are pregnant (see 'Pregnancy and breast-feeding')

• If your cholesterol levels get higher.
• If you have a history of, or if someone in your family has had, mania or bipolar disorder (feeling overexcited or euphoric).
• If you have a history of aggressive behaviour.
• If you have a history of bleeding disorders, or if you are pregnant (see `Pregnancy'). Venlafaxine tablets may cause a sensation of restlessness or an inability to sit or stand still during the first few weeks of treatment. You should tell your doctor if this happens to you.

Do not drink alcohol while being treated with Venlafaxine Tablets as it can lead to extreme tiredness and unconsciousness. Concomitant use with alcohol and/or certain medicines can make your symptoms of depression and other conditions, such as anxiety disorders worse.

Thoughts of suicide and worsening of your depression or anxiety disorder

If you are depressed and/or have anxiety disorders , you can sometimes have thoughts of harming or killing yourself. These may be increased when you first start taking antidepressants, since these medicines all take time to work, usually about two weeks, but sometimes longer. These thoughts may also occur when your dose is decreased or

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during discontinuation of treatment with Venlafaxine Tablets.

You may be more likely to think like this:

• If you have previously had thoughts about killing yourself 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 or anxious, 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.

Dry mouth

Dry mouth is reported in 10% of patients treated with venlafaxine. This may increase the risk of tooth decay (caries). Therefore, you should take special care in your dental hygiene.

Diabetes

Your blood glucose levels may be altered due to venlafaxine. Therefore, the dosage of your diabetes medicines may need to be adjusted.

Sexual problems

Medicines like Venlafaxine (so called SNRIs) may cause symptoms of sexual dysfunction (see section 4). In some cases, these symptoms have continued after stopping treatment.

Children and adolescents

Venlafaxine Tablets should normally not be used for children and adolescents under 18 years. Also, you should know that patients under 18 have an increased risk of side effects, such as suicide attempt, suicidal thoughts and hostility (predominantly aggression, oppositional behaviour and anger) when they take this class of medicines. Despite this, your doctor may prescribe Venlafaxine Tablets for patients under 18 because he/she decides that this is in their best interests. If your doctor has prescribed Venlafaxine Tablets for a patient under 18, and you want to discuss this, please go back to your doctor. You should inform your doctor if any of the symptoms listed above develop or worsen when patients under 18 are taking Venlafaxine Tablets. Also, the long-term safety effects concerning growth, maturation and cognitive and behavioural development of Venlafaxine Tablets in this age group has not yet been demonstrated. Other medicines and Venlafaxine

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.

Your doctor should decide whether you can take Venlafaxine Tablets with other medicines.

Do not start or stop taking any medicines, including those bought without a prescription, natural and herbal remedies, before checking with your doctor or pharmacist.

• Monoamine oxidase inhibitors (MAOIs) which are used to treat depression or Parkinson’s disease must not be taken with Venlafaxine. Tell your doctor if you have taken these medicines within the last 14 days. (MAOIs: see the section “What you need to know before you take Venlafaxine tablets”).

• Serotonin syndrome:

  A potentially life-threatening condition or Neuroleptic Malignant Syndrome (NMS)-like reactions (see the section “Possible Side Effects”), may occur with venlafaxine treatment, particularly when taken with other medicines. Examples of these medicines include:

  ο Triptans (used for migraine)

  ο Other medicines to treat depression, for instance SNRI, SSRIs, tricyclics, or medicines containing lithium

  ο Medicines containing amphetamines (used to treat attention deficit hyperactivity disorder (ADHD), narcolepsy and obesity)

  ο Medicines containing linezolid, an antibiotic (used to treat infections) ο Medicines containing moclobemide, a reversible MAOI (used to treat depression) Medicines containing sibutramine (used for weight loss) ο Medicines containing opioids (e.g., tramadol (a pain-killer), buprenorphine, fentanyl, tapentadol, pethidine, or pentazocine (used to treat severe pain), buprenorphine/naloxone (used to treat dependence to opioid drugs) ο Medicines containing dextromethorphan (used to treat coughing) ο Medicines containing methadone (used to treat opioid drug addiction or severe pain)

  ο Medicines containing methylene blue (used to treat high levels of methaemoglobin in the blood)

  ο Products containing St. John’s Wort (also called Hypericum perforatum, a natural or herbal remedy used to treat mild depression)

  ο Products containing tryptophan (used for problems such as sleep and depression)

  ο Antipsychotics (used to treat a disease with symptoms such as hearing, seeing, or sensing things which are not there, mistaken beliefs, unusual suspiciousness, unclear reasoning and becoming withdrawn) Signs and symptoms of serotonin syndrome may include a combination of the following: involuntary, rhythmic contractions of muscles, including the muscles that control movement of the eye, agitation, excessive sweating, tremor, increased muscle tension, restlessness, hallucinations, loss of coordination, fast heartbeat, increased body temperature, fast changes in blood pressure, overactive reflexes, diarrhoea, coma, nausea, vomiting. Contact your doctor when experiencing such symptoms. In its most severe form, serotonin syndrome can resemble Neuroleptic Malignant Syndrome (NMS). Signs and symptoms of NMS may include a combination of fever, fast heartbeat, sweating, severe muscle stiffness, confusion, increased muscle enzymes (determined by a blood test).

Tell your doctor immediately or go to the casualty department at your nearest hospital if you think serotonin syndrome is happening to you.

You must tell your doctor if you are taking medicines that can affect your heart rhythm. Examples of these medicines include:

• Antiarrhythmics such as quinidine, amiodarone, sotalol or dofetilide (used to treat abnormal heart rhythm)
• Antipsychotics such as thioridazine (see also Serotonin syndrome above)
• Antibiotics such as erythromycin or moxifloxacin (used to treat bacterial infections)
• Antihistamines (used to treat allergy)

The following medicines may also interact with Venlafaxine tablets and should be used with caution. It is especially important to mention to your doctor or pharmacist if you are taking medicines containing:

• Atazanavir, clarithromycin, indinavir, itraconazole, voriconazole, posaconazole, ketoconazole, (an antifungal medicine) nelfinavir, ritonavir, saquinavir and telithromycin Haloperidol or risperidone (to treat psychiatric conditions)
• Metoprolol (a beta blocker to treat high blood pressure and heart problems)
• Oral contraceptives

Venlafaxine Tablets with food, drink and alcohol

Venlafaxine Tablets should be taken with food (see section 3 “How to take Venlafaxine Tablets”).

Do not drink alcohol while being treated with Venlafaxine Tablets. Concomitant use with alcohol can lead to extreme tiredness and unconsciousness and can make your symptoms of depression and other conditions, such as anxiety disorders worse. 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 or pharmacist for advice before taking this medicine. You should take VenlafaxineTablets only after discussing the potential benefits and the potential risks to your unborn child with your doctor.

Make sure your midwife and/or doctor know you are on Venlafaxine Tablets. When taken during pregnancy, similar drugs (SSRIs) may increase the risk of a serious

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condition in babies, called persistent pulmonary hypertension of the new born (PPHN), making the baby breathe faster and appear bluish. These symptoms usually begin during the first 24 hours after the baby is born. If this happens to your baby, you should contact your midwife and/or doctor immediately.

If you are taking Venlafaxine tablets during pregnancy, in addition to having trouble breathing another symptom your baby might have when it is born is not feeding properly. If your baby has these symptoms when it is born and you are concerned, contact your doctor and/or midwife who will be able to advise you. Venlafaxine passes into breast milk. There is a risk of an effect on the baby. Therefore, you should discuss the matter with your doctor, and he/she will decide whether you should stop breast-feeding or stop the therapy with Venlafaxine Tablets. If you take Venlafaxine Tablets near the end of your pregnancy there may be an increased risk of heavy vaginal bleeding shortly after birth, especially if you have a history of bleeding disorders. Your doctor or midwife should be aware that you are taking Venlafaxine Tablets so they can advise you.

Driving and using machines

Venlafaxine can cause impaired judgement, thinking, and movement and coordination as well as problems with vision. If you are affected by any of these you should not drive, operate machinery or take part in any activities where such effects could put you or others at risk.

Important information about some of the ingredients of Venlafaxine Tablets This product contains lactose. If you have been told by your doctor that you have an intolerance to some sugars, contact your doctor before taking this medicinal product. This medicine contains less than 1 mmol sodium (23 mg) per dosage unit, that is to say essentially 'sodium-free'.

This medicine contains Sunset Yellow (E110) which may cause allergic reactions.

3. How to take Venlafaxine Tablets

Always take Venlafaxine Tablets exactly as your doctor has told you. You should check with your doctor or pharmacist if you are not sure.

The usual recommended starting dose is 75 mg per day in divided doses., The dose can be raised by your doctor gradually and, if needed, even up to a maximum dose of 375 mg daily for depression.

Take Venlafaxine Tablets at approximately the same time each day, in the morning and in the evening.

Venlafaxine Tablets should be taken with food.

If you have liver or kidney problems, talk to your doctor, since your dose of Venlafaxine Tablets may need to be different.

Do not stop taking Venlafaxine Tablets without talking to your doctor (see the section “If you stop taking Venlafaxine Tablets”).

If you take more Venlafaxine Tablets than you should

Call your doctor or pharmacist immediately if you take more than the amount of Venlafaxine Tablets prescribed by your doctor.

Overdose can be life-threatening, especially with concomitant use of alcohol and/or certain medicines (see “Other medicines and Venlafaxine Tablets”). The symptoms of a possible overdose may include a rapid heartbeat, changes in level of alertness (ranging from sleepiness to coma), blurred vision, seizures or fits, and vomiting.

If you forget to take Venlafaxine Tablets

If you miss a dose, take it as soon as you remember. However, if it is time for your next dose, skip the missed dose and take only a single dose as usual. Do not take more than the daily amount of Venlafaxine Tablets that has been prescribed for you in one day. If you stop taking Venlafaxine Tablets

Do not stop taking your treatment or reduce the dose without the advice of your doctor even if you feel better. If your doctor thinks that you no longer need Venlafaxine Tablets, he/she may ask you to reduce your dose slowly, before stopping treatment altogether. Side effects are known to occur when people stop using Venlafaxine Tablets, especially when Venlafaxine Tablets are stopped suddenly or the dose is reduced too quickly. Some patients may experience symptoms such as suicidal thoughts, aggressiveness, tiredness, dizziness, light-headedness, headache, sleeplessness, nightmares, dry mouth, loss of appetite, nausea, diarrhoea, nervousness, agitation, confusion, ringing in the ears, tingling or rarely electric shock sensations, weakness, sweating, seizures or flu-like symptoms, problems with eyesight and increase in blood pressure (which can cause headache, dizziness, ringing in the ears, sweating, etc).

Your doctor will advise you on how you should gradually discontinue Venlafaxine Tablets treatment. This can take a period of several weeks or months. In some patients, discontinuation may need to occur very gradually over periods of months or longer. If you experience any of these or other symptoms that are troublesome, ask your doctor for further advice. If you have any further questions on the use of this medicine, ask your doctor or pharmacist.

4. Possible side effects

Like all medicines, Venlafaxine Tablets can cause side effects, although not everybody gets them.

If any of the following happen, do not take more Venlafaxine tablets. Tell your doctor immediately or go to the casualty department at your nearest hospital. Uncommon (may affect up to 1 in 100 people)

• Swelling of the face, mouth, tongue, throat, hands, or feet and/or a raised itchy rash (hives), trouble swallowing or breathing.

Rare (may affect up to 1 in 1,000 people)

• Chest tightness, wheezing, trouble swallowing or breathing
• Severe skin rash, itching, or hives (elevated patches of red or pale skin that often itch)
• Signs and symptoms of serotonin syndrome which may include restlessness, hallucinations, loss of coordination, fast heartbeat, increased body temperature, fast changes in blood pressure, overactive reflexes, diarrhoea, coma, nausea, vomiting. In its most severe form, serotonin syndrome can resemble Neuroleptic Malignant Syndrome (NMS). Signs and symptoms of NMS may include a combination of fever, fast heartbeat, sweating, severe muscle stiffness, confusion, increased muscle enzymes (determined by a blood test).
• Signs of infection, such as high temperature, chills, shivering, headaches, sweating, flu-like symptoms. This may be the result of a blood disorder which leads to an increased risk of infection
• Severe rash, which may lead to severe blistering and peeling of the skin
• Unexplained muscle pain, tenderness or weakness. This may be a sign of rhabdomyolysis.

Frequency not known (cannot be estimated from the available data)

• Suicidal ideation and suicidal behaviours; cases of suicidal ideation and suicidal behaviours have been reported during venlafaxine therapy or early after treatment discontinuation (see section 2, What you need to know before you take Venlafaxine Tablets)
• Signs and symptoms of a condition called “stress cardiomyopathy” which may include chest pain, shortness of breath, dizziness, fainting, irregular heartbeat Other side effects that you should tell your doctor about include (The frequency of these side effects are included in the list “Other side effects that may occur” below):
• Coughing, wheezing, shortness of breath which may be accompanied by a high temperature
• Black (tarry) stools or blood in stools
• Itchiness, yellow skin or eyes, or dark urine, which may be symptoms of inflammation of the liver (hepatitis)
• Heart problems, such as fast or irregular heart rate, increased blood pressure
• Eye problems, such as blurred vision, dilated pupils
• Nerve problems, such as dizziness, pins and needles, movement disorder (muscle spasms or stiffness), seizures or fits
• Psychiatric problems, such as hyperactivity and feeling unusually overexcited
• Withdrawal effects (see the section “How to take Venlafaxine, if you stop taking Venlafaxine”)

• Prolonged bleeding - if you cut or injure yourself, it may take slightly longer than usual for bleeding to stop.

  Other side effects that may occur

  Very common: may affect more than 1 in 10 people

  • Dizziness, headache, drowsiness
  • Insomnia
  • Nausea, dry mouth, constipation
  • Sweating (including night sweats)

Common: may affect up to 1 in 10 people

• Appetite decreased
• Confusion; feeling separated (or detached) from yourself; lack of orgasm; decreased libido; agitation, nervousness; abnormal dreams

• Tremor; a sensation of restlessness or an ability to sit or stand still; pins and needles; altered taste sensation; increased

  muscle tonus

• Visual disturbance including blurred vision; dilated pupils; inability of the eye to automatically change focus from distant to near objects
• Ringing in the ears (tinnitus)
• Fast heartbeat; palpitations
• Increase in blood pressure; flushing
• Shortness of breath; yawning
• Vomiting; diarrhoea
• Mild rash; itching
• Increased frequency in urination; inability to pass urine; difficulties in passing urine
• Menstrual irregularities such as increased bleeding or increased irregular bleeding; abnormal ejaculation/orgasm (males); erectile dysfunction (impotence)
• Weakness (asthenia); fatigue; chills
• Weight gain; weight loss
• Increased cholesterol

Uncommon (may affect up to 1 in 100 people)

• Over activity, racing thoughts and decreased need for sleep (mania)
• Hallucinations; feeling separated (or detached) from reality; abnormal orgasm; lack of feeling or emotion; feeling over-excited; grinding of the teeth
• Fainting; involuntary movements of the muscles; impaired coordination and balance;
• Feeling dizzy (particularly when standing up too quickly); decrease in blood pressure
• Vomiting blood, black tarry stools (faeces) or blood in stools; which can be a sign of internal bleeding
• Sensitivity to sunlight; bruising; abnormal hair loss
• Inability to control urination;
• Stiffness, spasms and involuntary movements of the muscles
• Slight changes in blood levels of liver enzymes

Rare( may affect up to 1 in 1,000 people)

• Seizures or fits
• Coughing, wheezing and shortness of breath which may be accompanied by a high temperature
• Disorientation and confusion often accompanied by hallucination (delirium)
• Excessive water intake (known as SIADH)
• decrease in blood sodium levels
• severe eye pain and decreased or blurred vision
• abnormal, rapid or irregular heartbeat, which could lead to fainting
• severe abdominal or back pains (which could indicate a serious problem in the gut, liver or pancreas)
• itchiness, yellow skin or eyes, dark urine, or flu-like symptoms, which are symptoms of inflammation of the liver (hepatitis)

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

• prolonged bleeding, which may be a sign of reduced number of platelets in your blood, leading to an increased risk of

  bruising or bleeding

• abnormal breast milk production
• unexpected bleeding, e.g. bleeding gums, blood in the urine or in vomit, or the appearance of unexpected bruises or broken blood vessels (broken veins) Frequency not known (frequency cannot be estimated from the available data)
• aggression
• vertigo (sensation of dizziness or spinning)
• Heavy vaginal bleeding shortly after birth (postpartum haemorrhage), see `Pregnancy' in section 2 for more information

Venlafaxine tablets sometimes cause unwanted effects that you may not be aware of, such as increases in blood pressure or abnormal heart beat; slight changes in blood levels or liver enzymes, sodium or cholesterol. More rarely, Venlafaxine Tablets may reduce the function of platelets in your blood, leading to an increased risk of bruising or bleeding. Therefore, your doctor may wish to do blood tests occasionally, particularly if you have been taking Venlafaxine Tablets for a long time.

Reporting of side effects

If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card on Google Play or Apple App store. By reporting side effects, you can help provide more information on the safety of this medicine.

5. How to store Venlafaxine Tablets

Do not use Venlafaxine Tablets after the expiry date, which is stated on the packaging. This medicinal product does not require any special storage conditions. Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.

6. Contents of the pack and other information

What Venlafaxine Tablets contain

The active substance is venlafaxine hydrochloride.

Each tablet contains 37.5 mg or 75mg of venlafaxine.

The other ingredients are lactose monohydrate, cellulose microcrystalline, croscarmellose sodium, povidone K30, magnesium stearate, hypromellose 6cP, titanium dioxide (E171), macrogol/PEG 400, sunset yellow FCF lake (E110), talc. What Venlafaxine Tablets look like and contents of the pack

Venlafaxine 37.5 mg tablets are orange, round, biconvex, film-coated tablets, marked with V2.

Venlafaxine 75 mg tablets are orange, round, biconvex, film-coated tablets, marked with V4 with a scoreline.

Venlafaxine Tablets come in pack sizes of: 14, 28, 30, 42 and 56 film-coated tablets, packed into blister packs or plastic containers.

Not all pack sizes may be marketed.

Marketing Authorisation Holder and Manufacturer

Torrent Pharma (UK) Ltd.

3rd Floor, Nexus Building, 4 Gatwick Road, Crawley, West Sussex, RH10 9BG, United Kingdom

This leaflet was last revised in 06/2025.