I swear by black elderberry extract. If it were only placebo effect I don't know why nothing I tried before that ever worked for me. I pretty much have to get on it as soon as I start feeling a little run down like I'm going to catch something, and if I do, either I won't catch the cold at all, or I'll get well super fast.
But +1 on the allergens. I treat all of mine year round. It takes months to build up to a full dosage, so there's really no point in going off shots once the season is over (never mind there's something I'm allergic to in every season anyhow ).
"I felt [the women's Olympic marathon] was as important as women having the right to vote, because talent, strength, and capability cannot be fully realized if there are no personal rights to allow them to be visible or be deemed significant in the first place." - Kathrine Switzer, Marathon Woman