Will viagra (sildenafil) prevent altitude sickness?

Yes: Although Cialis might be better as you need to take less frequently.

Details: It is used in particular to prevent one form of altitude illness: high altitude pulmonary edema (hape) as does Nifedipine (procardia) ; salmeterol (serevent). Sildenafil (viagra) ; tadalafil (cialis) also improves exercise tolerance of climbers etc. It would not be prescribed to keep away headache, nausea, ; the more common symptoms of ams. Acetazolamide (diamox) is better for that.