Generic Symmetrel is an antiviral. It is used to prevent or treat certain influenza (flu) infections (type A). It may be given alone or along with flu shots. Generic Symmetrel will not work for colds, other types of flu or other virus infections. This medicine is also used to treat Parkinson's disease and other movement disorders. More info »
Regarding the effect: I do notice an increase in bloodflow and a better
stamina using the pills (I use 50mg). A side-effect I have noticed is that
my nose clogs up so I seem like I have a cold for an hour or so after taking
one pill. No other side-effects than that.