BTW I don't know if Viagra would have a similar effect but I think it could have an embarrassing side effect.

bluesky reported this as well (the nitro, not the viagra....) and Dr. Sclafani commented on it:David1949 wrote:This is slightly off topic but about 1 year ago I ended up in the hospital with excrutiating chest pain. The doctor immediately gave me a nitro glycerin pill and a super antacid drink. Happily it turned out not to be a heart attack, just acid reflux. But the next day my MS symptoms seemed somewhat better. Nitro is a powerful vasodilator. So now that Im aware of CCSVI I'm wondering if the nitro glycerin temporarily opened any blockages.
BTW I don't know if Viagra would have a similar effect but I think it could have an embarrassing side effect.