Fluoxetine (including Zydus fluoxetine 20mg) may cause a range of side effects, from mild to serious. It is important to monitor for these while taking the medication and contact a healthcare provider if severe or concerning symptoms develop[1].
Common side effects include:
- Sleep problems (insomnia), unusual or strange dreams
- Headache, dizziness, drowsiness, or vision changes
- Tremors or shaking
- Feeling nervous or anxious
- Weakness, tiredness, or yawning
- Upset stomach, nausea, vomiting, diarrhea
- Loss of appetite, weight changes
- Dry mouth, excessive sweating, hot flashes
- Stuffy nose, sinus pain, sore throat
- Decreased sex drive, impotence, or difficulty having an orgasm
These side effects are generally not serious but should be discussed with a doctor if they persist or become bothersome[1][3][4].
Serious side effects that require immediate medical attention:
- Allergic reactions (hives, rash, itching, swelling of the face, throat, tongue, lips, or eyes, difficulty breathing or swallowing)
- Severe skin reaction (fever, sore throat, burning eyes, blistering, peeling red or purple skin rash)
- Serotonin syndrome (agitation, hallucinations, fever, sweating, shivering, fast heart rate, muscle stiffness, twitching, loss of coordination, nausea, vomiting, diarrhea)
- Confusion, memory problems, difficulty concentrating
- Fast, slow, or irregular heartbeat; pounding heartbeats; chest pain
- Shortness of breath, dizziness, fainting
- Seizures
- Severe muscle stiffness, twitching, or movement disorders
- Low sodium levels (headache, confusion, slurred speech, severe weakness, vomiting, feeling unsteady)
- Abnormal bleeding or bruising
- Eye pain, vision changes (blurred or tunnel vision, halos around lights)
- Suicidal thoughts or behaviors, especially at the start of treatment or during dosage changes
Contact your doctor right away or seek emergency medical care if you experience any of these symptoms[1][3][5][6].
In children and adolescents, additional side effects may include:
- Increase in thirst
- Agitation or unusual increase in muscle movements
- Nosebleeds
- More frequent urination
- Heavy menstrual periods
- Slowed growth rate and weight change (weight and height should be closely monitored)
If you notice these or any other unexpected symptoms in a child or adolescent, notify a healthcare provider[4].
This is not a complete list. Always consult your healthcare provider for personalized guidance and report any unexpected or severe side effects to them and to your local health authority.
References
- [1] Fluoxetine: Drug Uses, Dosage & Side Effects – Drugs.com
- [3] Fluoxetine: MedlinePlus Drug Information
- [4] Fluoxetine (Prozac, Sarafem, others) – Uses, Side Effects, and More – WebMD
- [5] Fluoxetine: Side effects, dosage, uses, and more – Medical News Today
- [6] Fluoxetine (oral route) – Side effects & dosage – Mayo Clinic
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