The best remedy for taking care of altitude sickness is to drink excessive water. If you are going to be traveling to a higher altitude to ski, try to stay there for a day or two before you actually start skiing. This will help your body to get used to the altitude and it will not react so severely. Since you are in a rarefied atmosphere, your body will be deprived of oxygen. You must drink at least five to 10 liters of water a day for your body to be able to feel good. The logic behind avoiding caffeine and alcohol is also based on the fact that both these substances hinder comfortable water absorption into your body and will only dehydrate you further.
You must also remember to eat light, but eat the kind of food that will help you retain water. Yeasty breads and saltine crackers work best in these situations. If you have the kind of illness that makes you nauseous, you must carry strong sugar free peppermint candy or chewing gum with you and take it as soon as you start feeling sick. This will help tremendously. Alternatively, you could also carry anise seeds and chew on them.
answered by M W