Recent News: The Deep. Natalie Farrow was recently cast on Freeform's new pilot The Deep. They are waiting to see if it get's picked up, Catch Natalie Farrow's interview, talking all things iZombie and what it was like to play Ginger.
Caffeine can increase blood pressure; long term consumption at sufficiently high doses has been associated with chronic arterial stiffness. Blood pressure increases are mediated by adenosine receptor antagonism. Caffeine can cause vasoconstriction. It is unclear if caffeine causes increased heart rate as a side effect.
Some suggestions for caffeine use in migraine patients: 1  Episodic migraine patients should limit caffeine intake to one or two beverages daily (or 200mg caffeine). 2  Patients with daily headaches should consider avoiding caffeine completely. 3  Limit use of caffeine containing medications to no more than two days a week.