How to use

Use Venlafaxine as directed by your doctor. Check the label on the medicine for exact dosing instructions. Take Venlafaxine by mouth with food. Venlaxafine works best if it is taken at the same time each day. Continue to take Venlafaxine even if you feel well. Do not miss any doses.
Do not suddenly stop taking Venlafaxine without checking with your doctor. Side effects may occur. They may include mental or mood changes, numbness or tingling of the skin, dizziness, drowsiness, confusion, headache, increased sweating, loss of coordination or balance, nausea, ringing in the ears, seizures, tremor, trouble sleeping, or unusual tiredness. You should be closely monitored when you start Venlafaxine and whenever a change in dose is made.

If you have any questions about Venlafaxine, please talk with your doctor, pharmacist, or other health care provider. Venlafaxine is to be used only by the patient for whom it is prescribed. Do not share it with other people. If your symptoms do not improve or if they become worse, check with your doctor.

Drug Interactions

Venlafaxine (Effexor) is a serotonin and norepinephrine reuptake inhibitor (SNRI). It works by restoring the balance of certain natural substances in the brain (serotonin and norepinephrine), which helps to improve certain mood problems.

Some MEDICINES MAY INTERACT with Venlafaxine. Tell your health care provider if you are taking any other medicines, especially any of the following:

• Certain diet medicines (eg, phentermine, fenfluramine), linezolid, lithium, MAOIs (eg, phenelzine), methylene blue, metoclopramine, nefazodone, rasagiline, selective serotonin reuptake inhibitors (SSRIs) (eg, fluoxetine), serotonin and norepinephrine reuptake inhibitors (SNRIs) (eg, duloxetine), serotonin 5-HT1 receptor agonists (eg, sumatriptan), sibutramine, St. John's wort, tramadol, trazodone, tricyclic antidepressants (eg, amitriptyline), or tryptophan because severe side effects, such as a reaction that may include fever, rigid muscles, blood pressure changes, mental changes, confusion, irritability, agitation, delirium, and coma, may occur
• Anticoagulants (eg, warfarin), aspirin, or nonsteroidal anti-inflammatory drugs (NSAIDs) (eg, ibuprofen) because the risk of bleeding, including stomach bleeding, may be increased
• Diuretics (eg, furosemide, hydrochlorothiazide) because the risk of low blood sodium levels may be increased
• Azole antifungals (eg, ketoconazole) or cimetidine because they may increase the risk of Venlaxafine's side effects
• Cyproheptadine, because it may decrease Venlafaxine's effectiveness
• Aripiprazole, haloperidol, phenothiazines (eg, chlorpromazine, thioridazine), or risperidone because the risk of their side effects may be increased by Venlafaxine

Missed Dose

If you miss a dose, use it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.

Storage

Store in a dry place at 20-25°C (68-77°F). Do not store in the bathroom. Keep all medicines away from children and pets.

Notes
The above information is intended to supplement, not substitute for, the expertise and judgement of your physician, pharmacist or other healthcare professional. It should not be construed that the taking of this medication is safe, appropriate or effective for you.

* Illustrations are for graphic purposes only and the ordered medication may differ in appearance.

Warnings/Precautions

Do NOT use Venlafaxine if:

• you are allergic to any ingredient in Venlafaxine
• you are taking or have taken a monoamine oxidase inhibitor (MAOI) (eg, phenelzine), selegiline, or St. John's wort within the last 14 days
• you are taking a fenfluramine derivative (eg, dexfenfluramine), methylene blue, sibutramine, nefazodone, or tryptophan

Contact your doctor or health care provider right away if any of these apply to you.

Some medical conditions may interact with Venlafaxine. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

• if you are pregnant, planning to become pregnant, or are breast-feeding
• if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
• if you have allergies to medicines, foods, or other substances
• if you or a family member has a history of bipolar disorder (manic-depression), other mental or mood problems, suicidal thoughts or attempts, or alcohol or substance abuse
• if you have a history of seizures, heart problems (eg, heart failure, irregular heartbeat), abnormal electrocardiogram (ECG), recent heart attack, high blood pressure, overactive thyroid, liver problems, lung problems, kidney problems, stomach or bowel bleeding, blood or bleeding problems, increased eye pressure (eg, glaucoma), nervous system problems, or metabolism problems
• if you are dehydrated, have low blood sodium levels, or drink alcohol
• if you will be having electroconvulsive therapy (ECT)

Some MEDICINES MAY INTERACT with Venlafaxine. Tell your health care provider if you are taking any other medicines, especially any of the following:

• Certain diet medicines (eg, phentermine, fenfluramine), linezolid, lithium, MAOIs (eg, phenelzine), methylene blue, metoclopramine, nefazodone, rasagiline, selective serotonin reuptake inhibitors (SSRIs) (eg, fluoxetine), serotonin and norepinephrine reuptake inhibitors (SNRIs) (eg, duloxetine), serotonin 5-HT1 receptor agonists (eg, sumatriptan), sibutramine, St. John's wort, tramadol, trazodone, tricyclic antidepressants (eg, amitriptyline), or tryptophan because severe side effects, such as a reaction that may include fever, rigid muscles, blood pressure changes, mental changes, confusion, irritability, agitation, delirium, and coma, may occur
• Anticoagulants (eg, warfarin), aspirin, or nonsteroidal anti-inflammatory drugs (NSAIDs) (eg, ibuprofen) because the risk of bleeding, including stomach bleeding, may be increased
• Diuretics (eg, furosemide, hydrochlorothiazide) because the risk of low blood sodium levels may be increased
• Azole antifungals (eg, ketoconazole) or cimetidine because they may increase the risk of Venlafaxine's side effects
• Cyproheptadine because it may decrease Venlafaxine's effectiveness
• Aripiprazole, haloperidol, phenothiazines (eg, chlorpromazine, thioridazine), or risperidone because the risk of their side effects may be increased by Venlafaxine.

Possible Side Effects

All medicines may cause side effects, but many people have no, or minor side effects. Check with your doctor if any of these most COMMON side effects persist, or become bothersome:

• Anxiety; blurred vision; changes in taste; constipation; decreased sexual desire or ability; dizziness; drowsiness; dry mouth; flushing; headache; increased sweating; loss of appetite; nausea; nervousness; stomach upset; trouble sleeping; vomiting; weakness; weight loss; yawning.

Seek medical attention right away if any of these SEVERE side effects occur:

• Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); bizarre behavior; chest pain or discomfort; confusion; decreased urination; fast or irregular heartbeat; fever, chills, or sore throat; memory problems; new or worsening agitation, panic attacks, aggressiveness, impulsiveness, irritability, hostility, restlessness, or inability to sit still; persistent or severe ringing in the ears; seizures; severe or persistent anxiety, nervousness, or trouble sleeping; severe or persistent cough; severe or persistent headache, dizziness, stomach pain, or weakness; shortness of breath; significant weight loss; suicidal thoughts or attempts; tremor; trouble concentrating; unsteadiness or loss of coordination; unusual bruising or bleeding; unusual or severe mental or mood changes; vision problems; worsening of depression.