Ascend gradually
Limit daily sleeping altitude gain
Take rest days during ascent
Stay well hydrated
Avoid alcohol
Avoid overexertion on arrival
Eat light, frequent meals
Consider acclimatization before higher ascent
Use prescribed preventive medication if advised by a clinician
Avoid sleeping at a much higher altitude than the previous night
Descend immediately if symptoms worsen
Do not ignore headache, nausea, dizziness, or shortness of breath
Seek medical attention for severe symptoms