Commenting on a blog post that I wrote about a claim that gingko biloba might be a prophylactic for mountain sickness, Andrew Szalay said this:

I have heard this before and also heard that anecdotes that it does not work.  Also over the last few years, some have been saying nitric oxide — the active ingredient in Viagara, believe it or not — is actually more effective at reducing the symptoms of altitude.  Supposedly, it helps the blood carry more oxygen.

Andrew Szalay

suburbanmountaineer.com

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