“Is that similar to Lucozade sport? A glucose drink?”
Might be. I do know that Gatorade is a sport drink to really help with dehydration and to bring potassium levels up. Perhaps that is how it is supposed to help with headaches. Like I said, haven’t tried it yet for a headache but will next time to see if it helps.
http://www.thelssa.co.uk/lssa/shop/default.asp?TRADE-DOUBLER&tduid=de4bf8fded31f6fd3a3fe9f20880d56a
Here is an article from another website discussing how effective these type of drinks are