Flexible Economy is a new enhanced Economy service operating on a single cabin aircraft for customers on our shorthaul network flying to and from London Heathrow.
Although caffeine is generally safe and well tolerated, it can cause side effects when ingested in large doses. Additionally, regular caffeine use can cause dependency, resulting in withdrawal symptoms when caffeine is not consumed. Headaches can be a symptom of either too much caffeine or too little.
What are symptoms of a migraine headache? A migraine usually starts out as a dull ache and then eventually becomes a throbbing, constant, and pulsating pain in the temples, front of the head, or base of the head. Migraines are sometimes accompanied by nausea and vomiting. Some people may experience an aura as well.