Can I take Prozac and Sedoxil together?
Drug interaction guide
Originally published 25 Jan 2026
Meets Patient’s editorial guidelines
- DownloadDownload
- Share
- Language
- Discussion
- Audio Version
Taking Prozac and Sedoxil together can make you feel much more drowsy, sleepy, or dizzy than usual. It can also affect your coordination, making you more likely to fall, and may slow down your breathing or cause confusion.
In this article:
Video picks for Drug interactions
Continue reading below
Why this happens
Both medicines work by slowing down activity in the central nervous system (the brain). Prozac can also slow down the way your liver processes Sedoxil, which means the Sedoxil stays in your body longer and its effects become stronger.
What you should do
Back to contentsUse this combination with caution. Do not drive or operate machinery until you know how these medicines affect you. Avoid drinking alcohol, as this will make the sleepiness much worse. If you feel extremely sleepy or have trouble breathing, contact your doctor immediately.
Continue reading below
Important precautions
Back to contentsDepression and anxiety disorders
Prozac can increase suicidal thoughts and the urge to self-harm, particularly when first starting the medicine or changing the dose. This risk is higher in children, teenagers, and young adults. Monitor your mood closely and seek immediate medical help if you experience new or worsening thoughts of hurting yourself.
Serotonin Syndrome
Prozac can cause a life-threatening condition called serotonin syndrome, especially if taken with other medicines that affect serotonin levels. Seek immediate medical help if you experience agitation, hallucinations, fast heartbeat, or severe muscle stiffness.
Drowsiness and coordination
Sedoxil causes significant drowsiness and affects your coordination. Do not drive or operate machinery until you know how it affects you. The effect is much stronger if you drink alcohol.
Severe Respiratory Insufficiency or Sleep Apnoea
Sedoxil is a benzodiazepine that can suppress breathing. It must be avoided if you have severe lung disease, chronic obstructive pulmonary disease (COPD), or sleep apnoea, as it may lead to dangerous respiratory failure.
Bleeding disorders
Prozac increases your risk of serious bleeding, especially if you are also taking aspirin, NSAIDs (like ibuprofen), or blood thinners (like warfarin). Seek medical advice if you notice unusual bruising or persistent bleeding.
Dependency and withdrawal
Sedoxil is a benzodiazepine that can lead to physical and psychological dependence. Do not stop taking it suddenly, as this can cause severe withdrawal symptoms, including seizures.
Food and drink warnings
Back to contentsAlcohol
It is best to avoid or strictly limit alcohol while taking these medicines. Combining alcohol with Prozac or Sedoxil can significantly increase drowsiness, dizziness, and impair your coordination. It may also worsen the symptoms of your underlying condition.
Grapefruit juice
Avoid drinking grapefruit juice or eating grapefruit while taking Sedoxil. Grapefruit can interfere with how your body breaks down this medicine, leading to higher levels in your blood and increasing the risk of side effects like extreme sleepiness.
Caffeine (Coffee, Tea, Energy Drinks)
Prozac can sometimes increase the effects of caffeine in your body. This may lead to feeling jittery, anxious, or having difficulty sleeping. If you notice these effects, you should reduce your caffeine intake.
Continue reading below
Using other medicines
Back to contentsTaking 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.
Patient picks for Drug interactions

Treatment and medication
Can I take Amitriptyline and Zapain together?
Taking these two medicines together can make you feel very drowsy, dizzy, and confused. It can also slow down your breathing and make you more likely to experience constipation or a dry mouth.

Treatment and medication
Can I take Atorvastatin and Turkey tail together?
There is no evidence of a direct harmful interaction between atorvastatin and turkey tail mushroom (Trametes versicolor). However, turkey tail may have a mild effect on how the liver processes certain medications, and it may also have its own subtle cholesterol-lowering properties.
Continue reading below
Article history
The information on this page is written and peer reviewed by qualified clinicians.
25 Jan 2026 | Originally published

Ask, share, connect.
Browse discussions, ask questions, and share experiences across hundreds of health topics.

Feeling unwell?
Assess your symptoms online for free
Sign up to the Patient newsletter
Your weekly dose of clear, trustworthy health advice - written to help you feel informed, confident and in control.
By subscribing you accept our Privacy Policy. You can unsubscribe at any time. We never sell your data.