Can I take Pregabalin and Venlafaxine together?

Why this happens

Both medications have 'depressant' effects on the central nervous system. While they work in different ways, their sedative effects add together (an additive effect), making the overall impact on your alertness and coordination much stronger than if you took either medicine alone.

What you should do

You should use caution when taking these two medicines together. Avoid driving or operating heavy machinery until you know how this combination affects you. It is best to avoid alcohol, as it will make the drowsiness much worse. If you experience extreme sleepiness, confusion, or shallow breathing, contact your doctor immediately.

Important precautions

Mental health disorders

Both pregabalin and venlafaxine can cause suicidal thoughts or an urge to self-harm. You must seek medical help immediately if your mood changes or you have thoughts of hurting yourself.

Severe respiratory depression

Pregabalin can cause serious breathing problems, especially if you already have lung disease or if you take it with other sedating medicines like opioids. Seek emergency help if you experience slow, shallow, or difficult breathing.

Pregnancy

Pregabalin use during the first three months of pregnancy may increase the risk of birth defects. Effective contraception must be used during treatment.

Drug dependence and withdrawal

Pregabalin carries a risk of dependence and addiction. Do not stop taking it suddenly, as this can cause severe withdrawal symptoms such as seizures or anxiety.

Bleeding disorders

Venlafaxine can increase your risk of bleeding, such as bruising easily or nosebleeds. This risk is higher if you also take blood-thinning medicines (like warfarin) or NSAID painkillers (like ibuprofen or aspirin).

Serotonin Syndrome

When venlafaxine is taken with other medicines that affect serotonin, there is a risk of serotonin syndrome. Seek urgent medical attention if you experience high fever, agitation, confusion, trembling, or rapid heartbeat.

Food and drink warnings

Alcohol

It is best to avoid or strictly limit alcohol while taking these medicines. Both pregabalin and venlafaxine can cause drowsiness and dizziness; alcohol significantly increases these effects, which can lead to impaired coordination, severe sleepiness, and an increased risk of falls or accidents. Combining alcohol with these medications also increases the risk of liver damage.

Caffeine (Coffee, Tea, Energy Drinks)

Venlafaxine can increase your blood pressure and heart rate. High amounts of caffeine can worsen these effects, potentially leading to palpitations, jitteriness, or anxiety. Monitor your caffeine intake while taking this medicine.

Using other medicines

Taking multiple medicines? Our Medicines Interaction Checker helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.

Disclaimer

This information is for general educational purposes only and should not be relied upon as a substitute for professional medical advice. Always consult your GP, pharmacist, or another qualified healthcare professional before making decisions about your medications. Individual circumstances may vary, and only a healthcare professional who knows your medical history can provide personalised guidance.