For your question about the safety of using Omnacortil (Prednisolone 5mg) twice daily for 10 days for cough and cold, here are the key points to consider:

1. Prednisolone Use: This medication is a corticosteroid that reduces inflammation and is sometimes prescribed for severe respiratory symptoms.

2. Duration and Dosage: A 10-day course is generally within the typical short-term use range, but it should be strictly as prescribed by your doctor.

3. Safety Considerations: While generally safe for short-term use, corticosteroids can have side effects, especially if used longer or without medical supervision.

4. Follow-up: It’s important to monitor your symptoms and consult your doctor if you notice any side effects or if symptoms persist.

5. Do Not Self-Medicate: Always use such medications under medical guidance, as inappropriate use can lead to complications.

If you have any concerns or experience side effects like increased blood pressure, mood changes, or unusual symptoms, contact your healthcare provider promptly.