I've been upping the amount of VG in juices as the PG did cause my throat to be awfully dry. Now I'm having real problems with congestion, sneezing, watery eyes .... the whole hayfever like symptoms ... for over three weeks. Since it is also the time of year when allergies are at the highest in the Houston area, I'm not sure if it is that or the VG. Does anyone know if high amounts of VG can cause these symptoms or is it totally unrelated?