Supervitamins considerably increase all a character’s attributes for the duration of combat. Unfortunately, after their positive effects wears out, some negative after effects develops.
Supervitamins may be loaded into medkit. Only scientists with major Medicine training may use it.
On patch 1.7, Supervitamins increase estimatedly 4 point of Dex, and maybe reduce one of point of unknown stat because the negativity doesnt show on skills. It's suspected that it used the effect of Reticulin BUT reduce the negativity mentioned in THAT description. The original effect of supervitamin is displayed on AL:Martamphetamine (Ammo) instead.