Travelling With Your Medication

How can I request a copy of my prescription for travel? How can I request a copy of my prescription for travel?
Do I need a doctor’s letter to travel with GLP-1 medication? Do I need a doctor’s letter to travel with GLP-1 medication?
Can I take my GLP-1 medication abroad with me? Can I take my GLP-1 medication abroad with me?
Where can I check the rules for travelling with medication? Where can I check the rules for travelling with medication?
Can I take needles and injection supplies through airport security? Can I take needles and injection supplies through airport security?
How should I store my medication while travelling? How should I store my medication while travelling?