If you have IBS/SIBO take an osmotic laxative 36 hours before the flight. Or if time is short magnesium citrate or hydroxide 10 hours before. Then don't eat for 6 hours before the flight and not until you disembark. If it is 2 flights taking say 24 hours you are going to be pretty frigging hungry at the end of it. I don't think you would be allowed to take glucose solution on board with you these days to provide some harmless calories.
The joys of being old.
Biting the hand that feeds IT
