How does venlafaxine work?
Venlafaxine blocks the reabsorption (reuptake) of serotonin and noradrenaline, allowing these chemicals to stay active in the brain for longer. This helps regulate mood and reduce symptoms of depression and anxiety.
What is venlafaxine used to treat?
Venlafaxine is commonly prescribed for:
- Depression (major depressive disorder)
- Generalised anxiety disorder (GAD)
- Panic disorder
- Social anxiety disorder
Who can take venlafaxine?
Venlafaxine is suitable for most adults and is sometimes prescribed for teenagers under specialist supervision.
Who might not be able to take venlafaxine?
Venlafaxine may not be suitable if you:
- Have heart problems or high blood pressure
- Have a history of seizures or epilepsy
- Have liver or kidney disease
- Are taking other antidepressants (such as MAOIs)
Can I take venlafaxine if I’m pregnant or breastfeeding?
Venlafaxine isn’t usually recommended during pregnancy or while breastfeeding. If you are pregnant, planning to conceive, or breastfeeding, speak to your doctor about alternative treatments.
What if I miss a dose?
If you forget a dose, take it as soon as you remember. If it’s close to your next dose, skip the missed one—do not take two doses at once.
How effective is venlafaxine?
Venlafaxine is highly effective for treating depression and anxiety, but it may take 2 to 4 weeks to start noticing improvements, with full effects taking up to 6 to 8 weeks.
What should I do if I take too much?
Taking too much venlafaxine can be dangerous and may cause:
If you think you’ve taken too much, seek emergency medical help immediately.
What dose of venlafaxine is usually taken?
For depression & anxiety disorders: Starting dose of 37.5mg to 75mg daily, which may be increased up to 375mg daily, depending on response.
Your doctor will start you on a low dose and adjust it gradually if needed.
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What are the side effects of venlafaxine?
Common side effects include:
- Nausea
- Drowsiness or insomnia
- Dry mouth
- Sweating
- Dizziness
Serious side effects, such as suicidal thoughts, serotonin syndrome, or severe mood changes, require urgent medical attention.
How should I take venlafaxine?
Venlafaxine is taken as a tablet or capsule, usually once or twice daily, swallowed whole with water.
When should venlafaxine be taken?
Venlafaxine is usually taken in the morning or evening, depending on how it affects your energy levels and sleep.
What are the brand names for venlafaxine?
Venlafaxine is available as a generic medicine, but some branded versions include:
- Effexor XL
Final thoughts
Venlafaxine is an effective antidepressant for depression and anxiety but should be taken exactly as prescribed. It may take time to work, so patience is key. If you experience side effects or have concerns, speak to your doctor or pharmacist.
