Elevated BP is a possible side effect. If your E level is way high you can also get high BP. Mine spiked one time when my E did. I tend to check mine fairly often and only 1 thing changed. Cutting back on teh E and BP returned to normal as well as a few other minor side effects.
As with most things, YMMV. For some any E it seems can send BP through the roof. BP machines are cheap insurance.