Treatment of altitude sickness needs to focus on increasing blood oxygen levels. When caught early, conservative measures rapidly reverse symptoms but if left untreated, the condition can worsen. The first step is to remain at the same altitude until symptoms improve. This gives the body time to adapt to the lower oxygen levels. The key to preventing AMS is a gradual ascent that allows for adequate acclimatization. Travel from sea level to high mountains should include a day of rest at a moderate altitude (5,000 to 6,000 feet). If that is not possible there are prescription drug products that may help. For those who prefer non-prescription remedies, there are herbal products available that may provide high altitude relief. Products containing the herbs Ginkgo Biloba and Rhodiola Rosea have shown particular promise in accelerating acclimatization to altitudes.