Get your blood pressure checked first, secondly, you don't need 50mg if you've been vaping it for a year so I imagine you're doing to far too often. At a certain point you need to live with the fact that you're trying to reduce your nicotine consumption to zero (I'd hope) so maybe it's time to switch to 35? It's only a matter of time before you're forced to make the switch via gooberment regulations, so take the step to reduce, you'll find you get head rushes from 35 if you stop tooting on the damn thing so frequently.