Answer
Yes. Caffeine-related effects can include insomnia, restlessness, anxiety, irritability and palpitations, especially when additional caffeine is consumed.
Sources for this answer
- Panadol Extra Advance/ Panadol Period Pain 500mg/65mg Tablets (GSL) — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.