Can I take Pregabalin and Prozac together?

Why this happens

Both medicines affect the central nervous system. Pregabalin slows down nerve signals to reduce pain or anxiety, while Prozac increases levels of a chemical called serotonin. When used together, their sedative effects add up (an additive effect). Additionally, both drugs can influence serotonin levels, which occasionally leads to an over-accumulation of this chemical in the brain.

What you should do

You should use this combination with caution. It is best to avoid or strictly limit alcohol, as it will make the drowsiness much worse. Do not drive or operate machinery until you are certain the medicines are not making you too sleepy or dizzy to do so safely. If you experience severe confusion, hallucinations, a very fast heartbeat, or muscle twitching, contact your doctor immediately.

Important precautions

Mental health/Mood disorders

Prozac can increase the risk of suicidal thoughts and self-harm, particularly in children, teenagers, and young adults under 25. Monitor your mood closely and seek immediate medical help if you experience new or worsening thoughts of hurting yourself.

Pregabalin 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.

Serotonin Syndrome

When taken together, these medicines can increase the risk of serotonin syndrome, a potentially life-threatening condition. Seek urgent medical attention if you experience agitation, hallucinations, rapid heartbeat, severe muscle stiffness, or tremors.

Severe respiratory impairment

Pregabalin can cause serious breathing problems, especially in patients with existing lung conditions (like COPD) or those taking other sedating medicines like opioids. Seek emergency help if you experience slow, shallow, or difficult breathing.

Bleeding disorders

Prozac can increase your risk of bleeding, especially if you are taking aspirin, NSAIDs (like ibuprofen), or blood-thinning medication (like warfarin). Report any unusual bruising or prolonged bleeding to your doctor.

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.

Food and drink warnings

Alcohol

It is best to avoid or strictly limit alcohol while taking these medicines. Combining alcohol with pregabalin or Prozac can significantly increase drowsiness, dizziness, and impaired concentration. This combination also increases the risk of respiratory depression (slowed breathing) and may worsen the underlying condition being treated.

Caffeine (Coffee, tea, energy drinks)

Prozac can increase the levels of caffeine in your blood by slowing down how quickly your body processes it. This may lead to increased side effects such as jitteriness, palpitations, anxiety, or difficulty sleeping.

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.