Slow ascent at a rate no more than 300-350m (1000ft) per day above 2500m (8000ft)
Nifedipine 20mg q8hr or 30mg ER q12hr while ascending is effective prophylaxis in patients with prior episodes of<unk> 
Tadalafil 10mg BID 24hr prior to ascent OR Sildenafil 50mg q8hr
Salmeterol 125 mcg inhaled BID
Acetazolamide 125mg BID for prevention of hypoxia
Dexamethasone 8mg PO BID
High altitude pulmonary edema
Asthma
High altitude cerebral edema
Bronchitis
High altitude peripheral edema
CHF
Acute mountain sickness
COPD