What happens if you take 90mg of Cymbalta without ever have taking it?

Taking 90 mg of Cymbalta (duloxetine) without prior use can lead to serious side effects, as this dosage is typically higher than the standard starting dose for most patients. Potential side effects may include nausea, dizziness, drowsiness, increased heart rate, and even more severe reactions like serotonin syndrome. It’s crucial to consult a healthcare professional before starting or adjusting any medication. Always adhere to prescribed dosages to ensure safety and effectiveness.