Posso prendere Fluoxetina e Venlafaxina insieme?

You should not take fluoxetina e venlafaxina together unless specifically instructed and closely monitored by a specialist.

Both fluoxetine and venlafaxine work by increasing serotonin levels in the brain. When used together, their effects add up (an additive effect).

Additionally, fluoxetine can slow down the way your liver breaks down venlafaxine, causing the levels of venlafaxine in your blood to rise even higher.

Come sapere se stai avendo un'interazione farmacologica

You may be experiencing a drug interaction between fluoxetine and venlafaxine if you notice:

• Agitation, restlessness or confusion.

• Shivering, sweating or fever.

• Muscle twitching or stiffness.

• Fast heartbeat.

• Diarrea.

• Mal di testa.

• Feeling unusually anxious or overactive.

These can be signs of sindrome serotoninergica, a rare but serious reaction.

Seek urgent medical help if you have:

• High fever.

• Severe agitation or confusion.

• Convulsioni.

• Irregular heartbeat.

• Perdita di coscienza.

If you are experiencing any of the above symptoms you should:

• Seek emergency medical help (call 999 / go to A&E) if symptoms are severe, worsening quickly, or include high fever, confusion, seizures, or loss of consciousness.

• Do not take any further doses until you have spoken to a healthcare professional.

• Do not stop either medicine suddenly unless a doctor tells you to, as this can cause withdrawal symptoms.

If your doctor is switching you from one to the other, they will usually advise a 'washout' period (a gap of a few weeks) because fluoxetine stays in your system for a long time.

Pensieri suicidi e peggioramento della depressione

These medicines can increase thoughts of self-harm or suicide, particularly in the first few weeks of treatment or when the dose is changed. Patients under 25 are at higher risk and must be monitored closely by family or carers.

Sindrome serotoninergica

Taking these with other medicines that affect serotonin (such as St John’s Wort, tramadol, or triptans for migraine) can cause a life-threatening reaction. Seek immediate medical help if you experience high fever, agitation, confusion, or muscle twitching.

Abrupt withdrawal (Discontinuation Syndrome)

Stopping these medicines suddenly can cause severe withdrawal symptoms, including 'brain zaps' (electric shock sensations), intense dizziness, and anxiety. You must taper the dose slowly under medical supervision.

Alta pressione sanguigna (Ipertensione)

Venlafaxine can significantly increase your blood pressure. Your doctor must check your blood pressure before you start treatment and monitor it regularly while you are taking this medicine.

Disturbi della coagulazione o uso di anticoagulanti

These medicines can increase your risk of bleeding, especially if you are already taking medicines that thin the blood (like warfarin) or non-steroidal anti-inflammatory drugs (like ibuprofen).

Diabete

La fluoxetina può influenzare i livelli di zucchero nel sangue. Potrebbe essere necessario monitorare più attentamente la glicemia, poiché potrebbe essere necessario modificare la dose di insulina o di farmaci antidiabetici.

Alcol

It is best to avoid or strictly limit alcohol while taking these medicines. Combining alcohol with antidepressants can increase drowsiness, dizziness, and coordination problems. It can also make your depression or anxiety symptoms worse.

Caffeina (Caffè, tè, bevande energetiche)

Fluoxetine and venlafaxine can sometimes cause jitteriness, anxiety, or difficulty sleeping. High amounts of caffeine can make these side effects worse. Monitor how you feel and consider reducing caffeine intake if you feel overly restless.

Taking multiple medicines? Our Controllo Interazioni Farmaci 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.

Avvertenza

Queste informazioni sono solo a scopo educativo generale e non devono essere considerate un sostituto del consiglio medico professionale. Consultate sempre il vostro medico di base, farmacista o un altro professionista sanitario qualificato prima di prendere decisioni sui vostri farmaci. Le circostanze individuali possono variare, e solo un professionista sanitario che conosce la vostra storia medica può fornire una guida personalizzata.