My friend and I are off to KK next week and are looking forward to climbing Mt Kinabalu on 24/25 May. I spoke to my GP last week about giving me a script for Diamox (to prevent altitude sickness) but she said I didn't need it and wouldn't prescribe it. She did the climb herself last year and said it was 'easy' and that no-one in her group got altitude sickness as 4100m isn't considered high. SHe has given me Maxalon (to prevent vomiting) and said to just take Nurofen for any headaches. I am a little confused as most of the websites do refer to using Diamox or similar. My question is - can you get Diamox over the counter in KK once i get there? I have been preparing for the climb for 6 months and I will be really disappointed if I can't make it due to illness once up on the mountain.