i was really shocked by this. I have done many a long train journey when my son was a baby and toddler. He would cry and be noisy and want to run up and down the carriage. It would still never enter my head to sedate him and believe me the journeys were very stressful! I would be terrified and be watching every breath he took and probably end up more stressed as a result.
Many people seem to sedate their kids but it's certainly not for me!