
Use caution when driving, operating machinery, or performing other hazardous activities. Cyproheptadine may cause dizziness or drowsiness. If you experience dizziness or drowsiness, avoid these activities.

Take Periactin with or without food. You should drink an entire glass of water with your dose. You'll likely be directed to take each 4 mg tablet every 4 to 6 hours throughout the day.

Symptoms of a cyproheptadine overdose include extreme sleepiness, confusion, weakness, ringing in the ears, blurred vision, large pupils, dry mouth, flushing, fever, shaking, insomnia, hallucinations, and possibly seizures.

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