Do not take VENLOR XR:
- if you are hypersensitive (allergic) to venlafaxine or any of the other ingredients of VENLOR XR (listed in section 6).
- if you are under the age of 18 years.
- if you are pregnant or breastfeeding your baby (see Pregnancy, breastfeeding, and fertility).
- if you are also taking, or have taken within the last 14 days, any medicines known as monoamine oxidase inhibitors (MAOIs), used to treat depression or Parkinson’s disease. Taking an MAOI together with VENLOR XR, can cause serious or even life-threatening side effects like tremor, convulsions, agitation, and increased body temperature (hyperthermia) due to the risk of serotonin syndrome. Also, you must wait at least seven days after you stop taking VENLOR XR before you take any MAOI (see Other medicines and VENLOR XR).
Warnings and precautions
Before you start treatment with VENLOR XR, tell your doctor if any of the following applies to you as you may then require a lower dose or special precautions:
- if you have raised pressure in your eye (glaucoma).
- if you have a history of high blood pressure.
- if you have a history of heart problems or an abnormal heart rhythm.
- if you have a history of seizures (convulsions / fits) or epilepsy.
- if you have a tendency to bleed easily (history of bleeding disorders) or if you develop bruises easily, 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, breastfeeding and fertility).
- if you have a history of high cholesterol.
- if you are taking any weight loss agents.
- if you have a history of, or if someone in your family has had mania or bipolar disorder (feeling over-excited or euphoric).
- if you have a history of aggressive behaviour.
- if you have been diagnosed with impaired liver function.
- you have kidney disease.
- diabetes mellitus.
Please inform your doctor if you have attempted suicide in the past or if you frequently think about suicide or death. When you start treatment with VENLOR XR these thoughts may persist for some time, and it may take several weeks before you experience relief. If you frequently think about suicide or harming yourself or if you feel that everything is becoming too much and that it may be better if you die, please inform your doctor as a matter of urgency.
If you take other medicines know as monoamine oxidase inhibitors (see Do not take VENLOR XR) or other medicines that increase serotonin levels, you may develop a condition known as the serotonin syndrome. Symptoms of this syndrome include confusion, seeing or hearing things that are not real (hallucinations), agitation, hyperactivity, shivering, fever, tremors, fast heartbeat, eye movements, severe muscle spasms, incoordination of movements, and abnormal behaviour (see Possible side effects). Please report any of these symptoms to your doctor as a matter of urgency.
VENLOR XR may lower your blood levels of sodium (hyponatraemia). The likelihood of this is greater in elderly patients or patients taking diuretics (‘water tablets’). Please inform your doctor if you develop nausea and vomiting, headache, confusion, loss of energy, fatigue, muscle weakness, muscle spasm or muscle cramps (see Possible side effects).
Do not stop taking VENLOR XR without your doctor’s guidance as to how to gradually decrease the dose (see If you stop taking VENLOR XR).
Treatment with VENLOR XR may cause a condition known as akathisia (an unpleasant or distressing restlessness and a need to move often, or an inability to sit or stand still) during the first few weeks of treatment (see Possible side effects). Tell your doctor if this happens to you.
VENLOR XR may cause a rash, hives, or allergic reaction; notify your doctor if a rash appears.
VENLOR XR may cause a dry mouth, this may increase the risk of tooth decay. Therefore, take special care in your dental hygiene.
Treatment with VENLOR XR may interfere with laboratory tests used in the diagnosis of presence of certain medicines and cause false positive results.
Children and adolescents
Safety and efficacy of VENLOR XR in children under 18 years of age has not been established (see Do not take VENLOR XR). There have been increased reports of suicide attempt, suicidal thoughts, and hostility (predominantly aggression, oppositional behaviour and anger). Please report any such thoughts or behaviour to your doctor as soon as possible.
Other medicines and VENLOR XR
Always tell your health care provider if you are taking any other medicine (This includes all complementary or traditional medicines). Please inform your doctor if you are taking any of the following medicines, as you may require a reduction in dose or special precautions:
- Monoamine oxidase inhibitors for the treatment of depression or Parkinson’s disease must not be taken with VENLOR XR. You should wait 14 days after stopping a monoamine oxidase inhibitor before you start VENLOR XR and at least 7 days should elapse after you stop VENLOR XR before you can start treatment with a monoamine oxidase inhibitor (see Do not take VENLOR XR and Warnings and precautions).